{"id":975,"date":"2023-04-12T16:40:28","date_gmt":"2023-04-12T07:40:28","guid":{"rendered":"http:\/\/edu.ujhb.org\/?p=975"},"modified":"2023-04-12T16:40:28","modified_gmt":"2023-04-12T07:40:28","slug":"java%e5%85%a5%e9%96%80%ef%bc%88%e6%97%a5%e6%9c%ac%e8%aa%9e%e7%89%88%ef%bc%89","status":"publish","type":"post","link":"https:\/\/edu.ujhb.org\/?p=975","title":{"rendered":"Java\u5165\u9580\uff08\u65e5\u672c\u8a9e\u7248\uff09"},"content":{"rendered":"\n<p>IT\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u306e\u30d3\u30c7\u30aa\u3092\u3084\u308a\u305f\u3044\u306e\u3067\u3059\u304c\u3001\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306e\u30b3\u30f3\u30c6\u30f3\u30c4\u306b\u5fdc\u3058\u3066\u30d3\u30c7\u30aa\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u306e\u30c6\u30ad\u30b9\u30c8\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u914d\u7f6e\u3057\u3066\u3044\u305f\u3060\u3051\u307e\u3059\u304b\u3002 Java\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u304b\u3089\u59cb\u3081\u307e\u3057\u3087\u3046\u3001\u305d\u3057\u3066\u3042\u306a\u305f\u306f\u79c1\u306b\u30ab\u30d0\u30fc\u3059\u308b\u3082\u306e\u306e\u30ea\u30b9\u30c8\u3092\u4e0e\u3048\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u3082\u3061\u308d\u3093\u3067\u3059\uff01 Java\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u306e\u6982\u8981\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Java\u5c0e\u5165\u3068\u74b0\u5883\u69cb\u7bc9<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Java\u3068\u306f\u4f55\u304b\u3001\u305d\u306e\u6b74\u53f2\u7684\u80cc\u666f<\/li>\n\n\n\n<li>Java \u958b\u767a\u74b0\u5883 (JDK) \u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b<\/li>\n\n\n\n<li>Java \u958b\u767a\u74b0\u5883\u3092\u69cb\u6210\u3059\u308b<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>Java \u306e\u57fa\u672c\u69cb\u6587<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30c7\u30fc\u30bf\u578b\u3068\u5909\u6570<\/li>\n\n\n\n<li>\u6f14\u7b97\u5b50\u3068\u5f0f<\/li>\n\n\n\n<li>\u5236\u5fa1\u30d5\u30ed\u30fc \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8 (if \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3001for \u30eb\u30fc\u30d7\u3001while \u30eb\u30fc\u30d7\u306a\u3069)<\/li>\n\n\n\n<li>\u914d\u5217<\/li>\n\n\n\n<li>\u65b9\u5f0f<\/li>\n\n\n\n<li>\u30af\u30e9\u30b9\u3068\u30aa\u30d6\u30b8\u30a7\u30af\u30c8<\/li>\n\n\n\n<li>\u7d99\u627f\u3068\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\">\n<li>Java \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30ab\u30d7\u30bb\u30eb\u5316<\/li>\n\n\n\n<li>\u53d7\u3051\u7d99\u3050<\/li>\n\n\n\n<li>\u591a\u5f62<\/li>\n\n\n\n<li>\u62bd\u8c61\u30af\u30e9\u30b9\u3068\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9<\/li>\n\n\n\n<li>\u5185\u90e8\u30af\u30e9\u30b9<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\" start=\"4\">\n<li>Java \u5171\u901a\u30af\u30e9\u30b9\u30fb\u30e9\u30a4\u30d6\u30e9\u30ea\u30fc<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7cf8<\/li>\n\n\n\n<li>\u65e5\u6642<\/li>\n\n\n\n<li>\u30b3\u30ec\u30af\u30b7\u30e7\u30f3 \u30af\u30e9\u30b9<\/li>\n\n\n\n<li>\u30d5\u30a1\u30a4\u30eb IO \u64cd\u4f5c<\/li>\n\n\n\n<li>\u4f8b\u5916\u51e6\u7406<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\" start=\"5\">\n<li>\u9ad8\u5ea6\u306a Java \u6a5f\u80fd<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b8\u30a7\u30cd\u30ea\u30c3\u30af<\/li>\n\n\n\n<li>\u53cd\u5c04<\/li>\n\n\n\n<li>\u624b\u8a18<\/li>\n\n\n\n<li>\u6570\u3048\u308b<\/li>\n\n\n\n<li>\u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0<\/li>\n<\/ul>\n\n\n\n<p>\u4e0a\u8a18\u306fJava\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u306e\u4e3b\u306a\u5185\u5bb9\u3067\u3042\u308a\u3001\u3053\u306e\u6982\u8981\u306b\u5f93\u3063\u3066\u30d3\u30c7\u30aa\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u8a08\u753b\u3092\u7acb\u3066\u3001\u5b66\u7fd2\u8005\u304cJava\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u57fa\u672c\u3092\u5b8c\u5168\u306b\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u306b\u3001\u8aac\u660e\u306b\u9069\u5207\u306a\u6df1\u3055\u3068\u5e45\u3092\u6301\u305f\u305b\u308b\u3088\u3046\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/edu.ujhb.org\/?p=860\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>Java\u3068\u306f\u4f55\u304b\u3001\u305d\u306e\u6b74\u53f2\u7684\u80cc\u666f\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>Java\u306f\u3001\u3082\u3068\u3082\u306820\u5e74\u4ee3\u521d\u982d\u306bSun Microsystems(\u5f8c\u306bOracle\u306b\u8cb7\u53ce)\u306eJames Gosling\u306a\u3069\u306b\u3088\u3063\u3066\u958b\u767a\u3055\u308c\u305f\u9ad8\u6c34\u6e96\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u3067\u3059\u3002 Java\u8a00\u8a9e\u306f\u3001\u305d\u306e\u30b7\u30f3\u30d7\u30eb\u3055\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3001\u79fb\u690d\u6027\u3001\u304a\u3088\u3073\u30af\u30ed\u30b9\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306e\u6027\u8cea\u3067\u4e16\u754c\u7684\u306b\u77e5\u3089\u308c\u3066\u3044\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u3067\u3059\u3002<\/p>\n\n\n\n<p>Java\u8a00\u8a9e\u306f\u3082\u3068\u3082\u3068\u7d44\u307f\u8fbc\u307f\u30c7\u30d0\u30a4\u30b9\u7528\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306b\u8a2d\u8a08\u3055\u308c\u307e\u3057\u305f\u304c\u3001Java\u306f\u975e\u5e38\u306b\u79fb\u690d\u6027\u304c\u9ad8\u3044\u305f\u3081\u3001Web\u3001\u30a8\u30f3\u30bf\u30fc\u30d7\u30e9\u30a4\u30ba\u3001\u30c7\u30b9\u30af\u30c8\u30c3\u30d7\u3001\u30e2\u30d0\u30a4\u30eb\u3001\u304a\u3088\u3073\u30b2\u30fc\u30e0\u958b\u767a\u3067\u5e83\u304f\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u3059\u3050\u306b\u660e\u3089\u304b\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>Java\u306e\u6b74\u53f2\u306f\u3001\u30b5\u30f3\u30fb\u30de\u30a4\u30af\u30ed\u30b7\u30b9\u30c6\u30e0\u30ba\u306e\u958b\u767a\u8005\u30b0\u30eb\u30fc\u30d7\u304c\u7d44\u307f\u8fbc\u307f\u30b7\u30b9\u30c6\u30e0\u306e\u958b\u767a\u306e\u305f\u3081\u306b\u300c\u30aa\u30fc\u30af\u300d\u3068\u547c\u3070\u308c\u308b\u8a00\u8a9e\u306e\u8a2d\u8a08\u3092\u958b\u59cb\u3057\u305f20\u4e16\u7d00\u521d\u982d\u306b\u307e\u3067\u3055\u304b\u306e\u307c\u308a\u307e\u3059\u3002 \u305d\u306e\u5f8c\u3001\u3044\u304f\u3064\u304b\u306e\u5909\u66f4\u3068\u6539\u5584\u306e\u5f8c\u3001\u8a00\u8a9e\u306fJava\u306b\u6539\u540d\u3055\u308c\u300190\u5e74\u306b\u6b63\u5f0f\u306b\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u30ea\u30ea\u30fc\u30b9\u5f53\u521d\u3001Java\u8a00\u8a9e\u306f\u3001\u30af\u30ed\u30b9\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3001\u79fb\u690d\u6027\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306a\u3069\u3001\u591a\u304f\u306e\u512a\u308c\u305f\u6a5f\u80fd\u3092\u5099\u3048\u3066\u3044\u305f\u305f\u3081\u3001\u5927\u304d\u306a\u30bb\u30f3\u30bb\u30fc\u30b7\u30e7\u30f3\u3092\u5dfb\u304d\u8d77\u3053\u3057\u307e\u3057\u305f\u3002 \u3053\u308c\u3089\u306e\u6a5f\u80fd\u306b\u3088\u308a\u3001Java\u306f\u72ec\u81ea\u306e\u8a00\u8a9e\u306b\u306a\u308a\u3001\u5f90\u3005\u306b\u6700\u3082\u4eba\u6c17\u306e\u3042\u308b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u306e1\u3064\u306b\u767a\u5c55\u3057\u307e\u3057\u305f\u3002 \u4eca\u65e5\u3001Java\u306f\u591a\u304f\u306e\u4f01\u696d\u3084\u7d44\u7e54\u306b\u9078\u3070\u308c\u308b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u306b\u306a\u308a\u3001\u3055\u307e\u3056\u307e\u306a\u5206\u91ce\u3067\u5e83\u304f\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/edu.ujhb.org\/?p=860\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>Windows\u306bJava\u958b\u767a\u74b0\u5883(JDK)\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b\u65b9\u6cd5\u3092\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>Windows \u3078\u306e Java \u958b\u767a\u74b0\u5883 (JDK) \u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u306f\u975e\u5e38\u306b\u7c21\u5358\u3067\u3059\u3002 \u5177\u4f53\u7684\u306a\u624b\u9806\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30aa\u30e9\u30af\u30eb\u306e\u516c\u5f0fWeb\u30b5\u30a4\u30c8(<a href=\"https:\/\/www.oracle.com\/java\/technologies\/javase-downloads.html%EF%BC%89%EF%BC%8C%E9%80%89%E6%8B%A9%E9%80%82%E5%90%88%E4%BD%A0%E7%9A%84%E6%93%8D%E4%BD%9C%E7%B3%BB%E7%BB%9F%E7%89%88%E6%9C%AC%E7%9A%84JDK%E4%B8%8B%E8%BD%BD%E9%93%BE%E6%8E%A5%E3%80%82\">https:\/\/www.oracle.com\/java\/technologies\/javase-downloads.html)\u3092\u958b\u304d\u3001\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u5bfe\u5fdc\u3059\u308bJDK\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u30ea\u30f3\u30af\u3092\u9078\u629e\u3057\u307e\u3059\u3002<\/a><\/li>\n\n\n\n<li>JDK \u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u307e\u3059\u3002 \u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u304c\u5b8c\u4e86\u3057\u305f\u3089\u3001\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u305fJDK\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u30d5\u30a1\u30a4\u30eb(.exe\u30d5\u30a1\u30a4\u30eb)\u3092\u30c0\u30d6\u30eb\u30af\u30ea\u30c3\u30af\u3057\u3001\u30d7\u30ed\u30f3\u30d7\u30c8\u306b\u5f93\u3063\u3066\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3092\u5b8c\u4e86\u3057\u307e\u3059\u3002 \u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u306f\u3001JDK \u306f &#8220;C:\\Program Files\\Java&#8221; \u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u74b0\u5883\u5909\u6570\u3092\u69cb\u6210\u3057\u307e\u3059\u3002 \u30b7\u30b9\u30c6\u30e0\u304c Java \u958b\u767a\u74b0\u5883\u3092\u898b\u3064\u3051\u308b\u306b\u306f\u3001Java \u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u30fb\u30d1\u30b9\u3092\u30b7\u30b9\u30c6\u30e0\u306e\u74b0\u5883\u5909\u6570\u3067\u69cb\u6210\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u5177\u4f53\u7684\u306a\u624b\u9806\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002 [\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30fc] (\u307e\u305f\u306f [\u30de\u30a4 \u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30fc]) \u30a2\u30a4\u30b3\u30f3\u3092\u53f3\u30af\u30ea\u30c3\u30af\u3057\u3001[\u30d7\u30ed\u30d1\u30c6\u30a3] \u3092\u9078\u629e\u3057\u307e\u3059\u3002 b. \u5de6\u5074\u306e\u30d1\u30cd\u30eb\u3067\u3001[\u30b7\u30b9\u30c6\u30e0\u306e\u8a73\u7d30\u8a2d\u5b9a] \u3092\u9078\u629e\u3057\u307e\u3059\u3002 c. [\u8a73\u7d30\u8a2d\u5b9a] \u30bf\u30d6\u3067\u3001[\u74b0\u5883\u5909\u6570] \u30dc\u30bf\u30f3\u3092\u30af\u30ea\u30c3\u30af\u3057\u307e\u3059\u3002 d. \u300c\u30b7\u30b9\u30c6\u30e0\u5909\u6570\u300d\u9818\u57df\u3067\u3001\u300c\u30d1\u30b9\u300d\u5909\u6570\u3092\u898b\u3064\u3051\u3001\u30c0\u30d6\u30eb\u30af\u30ea\u30c3\u30af\u3057\u3066\u7de8\u96c6\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3092\u958b\u304d\u307e\u3059\u3002 e. \u7de8\u96c6\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u306e\u300c\u5909\u6570\u5024\u300d\u30c6\u30ad\u30b9\u30c8\u30fb\u30dc\u30c3\u30af\u30b9\u306b\u3001Java \u306e bin \u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u30fc\u3078\u306e\u30d1\u30b9\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002 \u305f\u3068\u3048\u3070\u3001JDK \u304c\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306f\u3001&#8221;C:\\Program Files\\Java\\jdk1.8.0_241\\bin&#8221; \u3092\u8ffd\u52a0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059 (\u30d0\u30fc\u30b8\u30e7\u30f3\u756a\u53f7\u306f\u7570\u306a\u308b\u5834\u5408\u304c\u3042\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044)\u3002 f. [OK] \u3092\u30af\u30ea\u30c3\u30af\u3057\u3066\u5909\u66f4\u3092\u4fdd\u5b58\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u304c\u6210\u529f\u3057\u305f\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002 \u30b3\u30de\u30f3\u30c9\u30d7\u30ed\u30f3\u30d7\u30c8\u30a6\u30a3\u30f3\u30c9\u30a6\u3092\u958b\u304d(Win + R\u3001\u300ccmd\u300d\u3068\u5165\u529b\u3057\u3001Enter\u30ad\u30fc\u3092\u62bc\u3057\u307e\u3059)\u3001 &#8220;java -version&#8221;\u30b3\u30de\u30f3\u30c9\u3092\u5165\u529b\u3057\u3001Java\u30d0\u30fc\u30b8\u30e7\u30f3\u60c5\u5831\u3092\u6b63\u3057\u304f\u8868\u793a\u3067\u304d\u308c\u3070\u3001\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u306f\u6210\u529f\u3067\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306b\u3057\u3066\u3001Windows\u306bJava\u958b\u767a\u74b0\u5883\u304c\u6b63\u5e38\u306b\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u307e\u3057\u305f\u3002 \u3053\u308c\u3067\u3001Java \u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u4f5c\u6210\u3068\u5b9f\u884c\u3092\u958b\u59cb\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/edu.ujhb.org\/?p=860\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>Linux\u306b\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u3066\u3044\u308bJava\u958b\u767a\u74b0\u5883(JDK)\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u6559\u3048\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>Linux\u3078\u306eJava\u958b\u767a\u74b0\u5883(JDK)\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3082\u7c21\u5358\u3067\u3001\u6b21\u306e\u624b\u9806\u306b\u5f93\u3063\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30aa\u30e9\u30af\u30eb\u306e\u516c\u5f0fWeb\u30b5\u30a4\u30c8(<a href=\"https:\/\/www.oracle.com\/java\/technologies\/javase-downloads.html%EF%BC%89%EF%BC%8C%E9%80%89%E6%8B%A9%E9%80%82%E5%90%88%E4%BD%A0%E7%9A%84%E6%93%8D%E4%BD%9C%E7%B3%BB%E7%BB%9F%E7%89%88%E6%9C%AC%E7%9A%84JDK%E4%B8%8B%E8%BD%BD%E9%93%BE%E6%8E%A5%E3%80%82%E6%B3%A8%E6%84%8F%EF%BC%8CLinux%E4%B8%8A%E4%B8%80%E8%88%AC%E4%BD%BF%E7%94%A8.tar.gz%E6%88%96.rpm%E6%A0%BC%E5%BC%8F%E7%9A%84%E5%AE%89%E8%A3%85%E5%8C%85%E3%80%82\">https:\/\/www.oracle.com\/java\/technologies\/javase-downloads.html)\u3092\u958b\u304d\u3001\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u5bfe\u5fdc\u3059\u308bJDK\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u30ea\u30f3\u30af\u3092\u9078\u629e\u3057\u307e\u3059\u3002 .tar.gz\u307e\u305f\u306f.rpm\u5f62\u5f0f\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u30d1\u30c3\u30b1\u30fc\u30b8\u306f\u3001\u901a\u5e38Linux\u3067\u4f7f\u7528\u3055\u308c\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/a><\/li>\n\n\n\n<li>\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u304c\u5b8c\u4e86\u3057\u305f\u3089\u3001\u30bf\u30fc\u30df\u30ca\u30eb\u30a6\u30a3\u30f3\u30c9\u30a6\u3092\u958b\u304d\u3001\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u5165\u529b\u3057\u3066\u3001\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u30d1\u30c3\u30b1\u30fc\u30b8\u3092\u5c55\u958b\u3057\u307e\u3059\u3002 unzip \u30b3\u30de\u30f3\u30c9\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002 \u30b3\u30fc\u30c9\u3092\u30b3\u30d4\u30fc\u3059\u308b \u3053\u3053\u3067\u306e\u300cjdk-11.0.2_linux-x64_bin.tar.gz\u300d\u306f\u3001\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u305f\u5b9f\u969b\u306e\u30d5\u30a1\u30a4\u30eb\u540d\u306b\u7f6e\u304d\u63db\u3048\u308b\u5fc5\u8981\u304c\u3042\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<code>tar -zxvf jdk-11.0.2_linux-x64_bin.tar.gz<\/code><\/li>\n\n\n\n<li>\u62bd\u51fa\u3057\u305f JDK \u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092 \/opt: bashCopy \u30b3\u30fc\u30c9\u306a\u3069\u306e\u9069\u5207\u306a\u5834\u6240\u306b\u79fb\u52d5\u3057\u307e\u3059\u3002<code>sudo mv jdk-11.0.2 \/opt\/<\/code><\/li>\n\n\n\n<li>\u74b0\u5883\u5909\u6570\u3092\u69cb\u6210\u3057\u307e\u3059\u3002 \u30b7\u30b9\u30c6\u30e0\u304c Java \u958b\u767a\u74b0\u5883\u3092\u898b\u3064\u3051\u308b\u306b\u306f\u3001Java \u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u30fb\u30d1\u30b9\u3092\u30b7\u30b9\u30c6\u30e0\u306e\u74b0\u5883\u5909\u6570\u3067\u69cb\u6210\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u5177\u4f53\u7684\u306a\u624b\u9806\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002 \/etc\/profile \u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304d\u307e\u3059: bashCopy codeb\u3002 \u30d5\u30a1\u30a4\u30eb\u306e\u672b\u5c3e\u306b\u6b21\u306e\u30b3\u30fc\u30c9\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002 bashCopy \u30b3\u30fc\u30c9 \/opt\/jdk-11.0.2 \u306f\u5b9f\u969b\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u7f6e\u304d\u63db\u3048\u308b\u5fc5\u8981\u304c\u3042\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002 c. \u30d5\u30a1\u30a4\u30eb\u3092\u4fdd\u5b58\u3057\u3066\u9589\u3058\u307e\u3059\u3002 \u74b0\u5883\u5909\u6570\u3092\u66f4\u65b0\u3057\u307e\u3059:bash\u30b3\u30d4\u30fc\u30b3\u30fc\u30c9<code>sudo nano \/etc\/profile&nbsp;<\/code><code>export JAVA_HOME=\/opt\/jdk-11.0.2 export PATH=$JAVA_HOME\/bin:$PATH&nbsp;<\/code><code>source \/etc\/profile<\/code><\/li>\n\n\n\n<li>\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u304c\u6210\u529f\u3057\u305f\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002 \u30bf\u30fc\u30df\u30ca\u30eb\u30a6\u30a3\u30f3\u30c9\u30a6\u3092\u958b\u304d\u3001\u300cjava -version\u300d\u30b3\u30de\u30f3\u30c9\u3092\u5165\u529b\u3057\u3001Java\u30d0\u30fc\u30b8\u30e7\u30f3\u60c5\u5831\u3092\u6b63\u3057\u304f\u8868\u793a\u3067\u304d\u308c\u3070\u3001\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u306f\u6210\u529f\u3067\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306b\u3057\u3066\u3001Linux\u306bJava\u958b\u767a\u74b0\u5883\u304c\u6b63\u5e38\u306b\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u307e\u3057\u305f\u3002 \u3053\u308c\u3067\u3001Java \u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u4f5c\u6210\u3068\u5b9f\u884c\u3092\u958b\u59cb\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/edu.ujhb.org\/?p=860\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>Mac\u3078\u306eJava\u958b\u767a\u74b0\u5883(JDK)\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>Mac\u3078\u306eJava\u958b\u767a\u74b0\u5883(JDK)\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3082\u7c21\u5358\u3067\u3001\u6b21\u306e\u624b\u9806\u306b\u5f93\u3063\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30aa\u30e9\u30af\u30eb\u306e\u516c\u5f0fWeb\u30b5\u30a4\u30c8(<a href=\"https:\/\/www.oracle.com\/java\/technologies\/javase-downloads.html%EF%BC%89%EF%BC%8C%E9%80%89%E6%8B%A9%E9%80%82%E5%90%88%E4%BD%A0%E7%9A%84%E6%93%8D%E4%BD%9C%E7%B3%BB%E7%BB%9F%E7%89%88%E6%9C%AC%E7%9A%84JDK%E4%B8%8B%E8%BD%BD%E9%93%BE%E6%8E%A5%E3%80%82%E6%B3%A8%E6%84%8F%EF%BC%8CMac%E4%B8%8A%E4%B8%80%E8%88%AC%E4%BD%BF%E7%94%A8.dmg%E6%A0%BC%E5%BC%8F%E7%9A%84%E5%AE%89%E8%A3%85%E5%8C%85%E3%80%82\">https:\/\/www.oracle.com\/java\/technologies\/javase-downloads.html)\u3092\u958b\u304d\u3001\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u5bfe\u5fdc\u3059\u308bJDK\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u30ea\u30f3\u30af\u3092\u9078\u629e\u3057\u307e\u3059\u3002 .dmg\u5f62\u5f0f\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u30d1\u30c3\u30b1\u30fc\u30b8\u306f\u3001\u901a\u5e38Mac\u3067\u4f7f\u7528\u3055\u308c\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/a><\/li>\n\n\n\n<li>\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u304c\u5b8c\u4e86\u3057\u305f\u3089\u3001\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u305fJDK\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u30d5\u30a1\u30a4\u30eb\u3092\u30c0\u30d6\u30eb\u30af\u30ea\u30c3\u30af\u3057\u3001\u30d7\u30ed\u30f3\u30d7\u30c8\u306b\u5f93\u3063\u3066\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3092\u5b8c\u4e86\u3057\u307e\u3059\u3002 \u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u306f\u3001JDK \u306f &#8220;\/Library\/Java\/JavaVirtualMachines&#8221; \u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u74b0\u5883\u5909\u6570\u3092\u69cb\u6210\u3057\u307e\u3059\u3002 \u30b7\u30b9\u30c6\u30e0\u304c Java \u958b\u767a\u74b0\u5883\u3092\u898b\u3064\u3051\u308b\u306b\u306f\u3001Java \u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u30fb\u30d1\u30b9\u3092\u30b7\u30b9\u30c6\u30e0\u306e\u74b0\u5883\u5909\u6570\u3067\u69cb\u6210\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u5177\u4f53\u7684\u306a\u624b\u9806\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002 \u30bf\u30fc\u30df\u30ca\u30eb\u30a6\u30a3\u30f3\u30c9\u30a6\u3092\u958b\u304d\u307e\u3059\u3002 b. .bash_profile \u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304d\u307e\u3059: bashCopy \u30b3\u30fc\u30c7\u30c3\u30af\u3002 \u30d5\u30a1\u30a4\u30eb\u306e\u672b\u5c3e\u306b\u6b21\u306e\u30b3\u30fc\u30c9\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002 \u30d5\u30a1\u30a4\u30eb\u3092\u4fdd\u5b58\u3057\u3066\u9589\u3058\u307e\u3059\u3002 \u74b0\u5883\u5909\u6570\u3092\u66f4\u65b0\u3057\u307e\u3059:bash\u30b3\u30d4\u30fc\u30b3\u30fc\u30c9<code>nano ~\/.bash_profile&nbsp;<\/code><code>export JAVA_HOME=$(\/usr\/libexec\/java_home) export PATH=$JAVA_HOME\/bin:$PATH&nbsp;<\/code><code>source ~\/.bash_profile<\/code><\/li>\n\n\n\n<li>\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u304c\u6210\u529f\u3057\u305f\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002 \u30bf\u30fc\u30df\u30ca\u30eb\u30a6\u30a3\u30f3\u30c9\u30a6\u3092\u958b\u304d\u3001\u300cjava -version\u300d\u30b3\u30de\u30f3\u30c9\u3092\u5165\u529b\u3057\u3001Java\u30d0\u30fc\u30b8\u30e7\u30f3\u60c5\u5831\u3092\u6b63\u3057\u304f\u8868\u793a\u3067\u304d\u308c\u3070\u3001\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u306f\u6210\u529f\u3067\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306b\u3057\u3066\u3001Mac\u306bJava\u958b\u767a\u74b0\u5883\u304c\u6b63\u5e38\u306b\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u307e\u3057\u305f\u3002 \u3053\u308c\u3067\u3001Java \u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u4f5c\u6210\u3068\u5b9f\u884c\u3092\u958b\u59cb\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/edu.ujhb.org\/?p=860\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>Java\u958b\u767a\u74b0\u5883\u306e\u8a2d\u5b9a\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u6559\u3048\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>Java\u958b\u767a\u74b0\u5883\u306e\u69cb\u6210\u3068\u306f\u3001Java\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u4f5c\u6210\u3001\u30b3\u30f3\u30d1\u30a4\u30eb\u3001\u304a\u3088\u3073\u5b9f\u884c\u3067\u304d\u308b\u3088\u3046\u306b\u3001Java\u958b\u767a\u30c4\u30fc\u30eb\u3068\u5fc5\u8981\u306a\u30e9\u30a4\u30d6\u30e9\u30ea\u30d5\u30a1\u30a4\u30eb\u3092\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30fc\u306b\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b\u3053\u3068\u3067\u3059\u3002 \u5177\u4f53\u7684\u306a\u624b\u9806\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Java \u958b\u767a\u74b0\u5883 (JDK) \u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u307e\u3059\u3002 Java\u958b\u767a\u74b0\u5883(JDK)\u306fJava\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u958b\u767a\u306b\u5fc5\u8981\u306a\u30c4\u30fc\u30eb\u306a\u306e\u3067\u3001\u307e\u305aJDK\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u65b9\u6cd5\u306b\u3064\u3044\u3066\u306f\u3001\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u306b\u5bfe\u5fdc\u3059\u308b\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n\n\n\n<li>\u74b0\u5883\u5909\u6570\u3092\u69cb\u6210\u3057\u307e\u3059\u3002 \u30b7\u30b9\u30c6\u30e0\u304c Java \u958b\u767a\u74b0\u5883\u3092\u898b\u3064\u3051\u308b\u306b\u306f\u3001Java \u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u30fb\u30d1\u30b9\u3092\u30b7\u30b9\u30c6\u30e0\u306e\u74b0\u5883\u5909\u6570\u3067\u69cb\u6210\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u65b9\u6cd5\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002 \u30a6\u30a3\u30f3\u30c9\u30a6\u30ba\u74b0\u5883:i\u3002 \u300c\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30d1\u30cd\u30eb\u300d\u3092\u958b\u304d\u3001\u300c\u30b7\u30b9\u30c6\u30e0\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u300d\u306b\u79fb\u52d5\u3057\u3066\u3001\u300c\u30b7\u30b9\u30c6\u30e0\u300d\u3092\u9078\u629e\u3057\u307e\u3059\u3002 ii. \u5de6\u5074\u306e\u30d1\u30cd\u30eb\u3067\u3001[\u30b7\u30b9\u30c6\u30e0\u306e\u8a73\u7d30\u8a2d\u5b9a] \u3092\u9078\u629e\u3057\u307e\u3059\u3002 iii. [\u8a73\u7d30\u8a2d\u5b9a] \u30bf\u30d6\u3067\u3001[\u74b0\u5883\u5909\u6570] \u30dc\u30bf\u30f3\u3092\u30af\u30ea\u30c3\u30af\u3057\u307e\u3059\u3002 iv. \u300c\u30b7\u30b9\u30c6\u30e0\u5909\u6570\u300d\u9818\u57df\u3067\u3001\u300c\u30d1\u30b9\u300d\u5909\u6570\u3092\u898b\u3064\u3051\u3001\u30c0\u30d6\u30eb\u30af\u30ea\u30c3\u30af\u3057\u3066\u7de8\u96c6\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3092\u958b\u304d\u307e\u3059\u3002 v. \u7de8\u96c6\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u306e\u300c\u5909\u6570\u5024\u300d\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\u306b\u3001Java \u306e bin \u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3078\u306e\u30d1\u30b9\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002 \u305f\u3068\u3048\u3070\u3001JDK \u304c\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306f\u3001&#8221;C:\\Program Files\\Java\\jdk1.8.0_241\\bin&#8221; \u3092\u8ffd\u52a0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059 (\u30d0\u30fc\u30b8\u30e7\u30f3\u756a\u53f7\u306f\u7570\u306a\u308b\u5834\u5408\u304c\u3042\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044)\u3002 vi. [OK] \u3092\u30af\u30ea\u30c3\u30af\u3057\u3066\u5909\u66f4\u3092\u4fdd\u5b58\u3057\u307e\u3059\u3002 Linux \u304a\u3088\u3073 Mac \u74b0\u5883: i. \u30bf\u30fc\u30df\u30ca\u30eb\u30a6\u30a3\u30f3\u30c9\u30a6\u3092\u958b\u304d\u307e\u3059\u3002 .bash_profile\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304d\u307e\u3059:go\u30b3\u30d4\u30fc\u30b3\u30fc\u30c9iii\u3002 \u30d5\u30a1\u30a4\u30eb\u306e\u672b\u5c3e\u306b\u6b21\u306e\u30b3\u30fc\u30c9\u3092\u8ffd\u52a0\u3057\u307e\u3059: bashCopy codeiv\u3002 \u30d5\u30a1\u30a4\u30eb\u3092\u4fdd\u5b58\u3057\u3066\u9589\u3058\u307e\u3059\u3002 v. \u74b0\u5883\u5909\u6570\u3092\u66f4\u65b0\u3059\u308b: goCopy \u30b3\u30fc\u30c9<code>&nbsp;``` nano ~\/.bash_profile ```&nbsp;<\/code><code>``` export JAVA_HOME=$(\/usr\/libexec\/java_home) export PATH=$JAVA_HOME\/bin:$PATH ```&nbsp;<\/code><code>``` source ~\/.bash_profile ```<\/code><\/li>\n\n\n\n<li>\u958b\u767a\u30c4\u30fc\u30eb\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u307e\u3059\u3002 Java \u958b\u767a\u30c4\u30fc\u30eb\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001Java \u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u3088\u308a\u7c21\u5358\u306b\u4f5c\u6210\u3067\u304d\u307e\u3059\u3002 \u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u308bJava\u958b\u767a\u30c4\u30fc\u30eb\u306f\u3001Eclipse\u3001IntelliJ IDEA\u3001NetBeans\u306a\u3069\u3067\u3042\u308a\u3001\u597d\u307f\u3084\u30cb\u30fc\u30ba\u306b\u5fdc\u3058\u3066\u9078\u629e\u3057\u3066\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3067\u304d\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u69cb\u6210\u304c\u6210\u529f\u3057\u305f\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002 \u30bf\u30fc\u30df\u30ca\u30eb\u30a6\u30a3\u30f3\u30c9\u30a6\u3092\u958b\u304d\u3001\u300cjava -version\u300d\u30b3\u30de\u30f3\u30c9\u3092\u5165\u529b\u3057\u3001Java\u30d0\u30fc\u30b8\u30e7\u30f3\u60c5\u5831\u3092\u6b63\u3057\u304f\u8868\u793a\u3067\u304d\u308c\u3070\u3001\u8a2d\u5b9a\u306f\u6210\u529f\u3067\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306b\u3057\u3066\u3001Java\u958b\u767a\u74b0\u5883\u304c\u6b63\u5e38\u306b\u69cb\u6210\u3055\u308c\u307e\u3057\u305f\u3002 \u3053\u308c\u3067\u3001Java \u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u4f5c\u6210\u3068\u5b9f\u884c\u3092\u958b\u59cb\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/edu.ujhb.org\/?p=860\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>Java\u306e\u30c7\u30fc\u30bf\u578b\u3068\u5909\u6570\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>Java\u306f\u53b3\u5bc6\u306b\u578b\u6307\u5b9a\u3055\u308c\u305f\u8a00\u8a9e\u3067\u3042\u308a\u3001\u5404\u5909\u6570\u306f\u4f7f\u7528\u3059\u308b\u524d\u306b\u30c7\u30fc\u30bf\u578b\u3092\u5ba3\u8a00\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 Java \u3067\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u308b\u30c7\u30fc\u30bf\u30fb\u30bf\u30a4\u30d7\u306b\u306f\u3001\u57fa\u672c\u30c7\u30fc\u30bf\u30fb\u30bf\u30a4\u30d7\u3068\u53c2\u7167\u30c7\u30fc\u30bf\u30fb\u30bf\u30a4\u30d7\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u57fa\u672c\u30c7\u30fc\u30bf\u578b Java \u57fa\u672c\u30c7\u30fc\u30bf\u578b\u306b\u306f\u3001\u6b21\u306e 8 \u3064\u306e\u30bf\u30a4\u30d7\u304c\u3042\u308a\u307e\u3059\u3002\n<ul class=\"wp-block-list\">\n<li>\u6574\u6570 (\u6574\u6570\u3001\u77ed\u6574\u6570\u3001\u9577\u6574\u6570\u3001\u30d0\u30a4\u30c8): 2 \u9032\u6570\u30018 \u9032\u6570\u300110 \u9032\u6570\u3001\u304a\u3088\u3073 16 \u9032\u6570\u3067\u8868\u3059\u3053\u3068\u304c\u3067\u304d\u308b\u6574\u6570\u3092\u8868\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u6d6e\u70b9\u578b\uff08float\u3001double\uff09\uff1a\u8868\u793a\u5b9e\u6570\uff0c\u4f7f\u7528\u6d6e\u70b9\u6570\u8868\u793a\u6cd5\u8868\u793a\u3002<\/li>\n\n\n\n<li>Char: \u5358\u4e00\u5f15\u7528\u7b26\u3092\u4f7f\u7528\u3057\u3066 1 \u6587\u5b57\u3092\u8868\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30d6\u30fc\u30eb\u5024: \u771f\u307e\u305f\u306f\u507d\u306e\u8ad6\u7406\u5024\u3092\u8868\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u53c2\u7167\u30c7\u30fc\u30bf\u578b Java \u53c2\u7167\u30c7\u30fc\u30bf\u578b\u306b\u306f\u3001\u6b21\u306e\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u3002\n<ul class=\"wp-block-list\">\n<li>\u30af\u30e9\u30b9: \u30af\u30e9\u30b9\u3092\u8868\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9: \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3092\u8868\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u914d\u5217: \u914d\u5217\u3092\u8868\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u5217\u6319\u578b: \u5217\u6319\u578b\u3092\u8868\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Java\u3067\u306f\u3001\u5909\u6570\u306f\u30c7\u30fc\u30bf\u5024\u3092\u683c\u7d0d\u3059\u308b\u305f\u3081\u306e\u30b3\u30f3\u30c6\u30ca\u3067\u3042\u308a\u3001\u30ed\u30fc\u30ab\u30eb\u5909\u6570\u3068\u30e1\u30f3\u30d0\u30fc\u5909\u6570(\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5909\u6570\u307e\u305f\u306f\u30af\u30e9\u30b9\u5909\u6570\u3068\u3082\u547c\u3070\u308c\u307e\u3059)\u306b\u5206\u5272\u3067\u304d\u307e\u3059\u3002\n<ul class=\"wp-block-list\">\n<li>\u30ed\u30fc\u30ab\u30eb\u5909\u6570: \u30e1\u30bd\u30c3\u30c9\u307e\u305f\u306f\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u30fb\u30d6\u30ed\u30c3\u30af\u5185\u3067\u5b9a\u7fa9\u3055\u308c\u3001\u30e1\u30bd\u30c3\u30c9\u307e\u305f\u306f\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u30fb\u30d6\u30ed\u30c3\u30af\u5185\u3067\u306e\u307f\u6709\u52b9\u306a\u5909\u6570\u3002<\/li>\n\n\n\n<li>\u30e1\u30f3\u30d0\u30fc\u5909\u6570: \u30af\u30e9\u30b9\u306e\u3059\u3079\u3066\u306e\u30e1\u30bd\u30c3\u30c9\u3068\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u30d6\u30ed\u30c3\u30af\u304b\u3089\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u30af\u30e9\u30b9\u5185\u3067\u5b9a\u7fa9\u3055\u308c\u305f\u5909\u6570\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p>\u5909\u6570\u3092\u5ba3\u8a00\u3059\u308b\u3068\u304d\u306f\u3001\u5909\u6570\u306e\u30c7\u30fc\u30bf\u578b\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002 \u4f8b\u3048\u3070\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">arduinoCopy code<code>int age = 20;  \/\/ \u5b9a\u4e49\u4e00\u4e2a\u6574\u578b\u53d8\u91cfage\uff0c\u521d\u59cb\u503c\u4e3a20\ndouble salary = 1000.0;  \/\/ \u5b9a\u4e49\u4e00\u4e2a\u53cc\u7cbe\u5ea6\u6d6e\u70b9\u578b\u53d8\u91cfsalary\uff0c\u521d\u59cb\u503c\u4e3a1000.0\nchar gender = 'M';  \/\/ \u5b9a\u4e49\u4e00\u4e2a\u5b57\u7b26\u578b\u53d8\u91cfgender\uff0c\u521d\u59cb\u503c\u4e3a'M'\nboolean isEmployed = true;  \/\/ \u5b9a\u4e49\u4e00\u4e2a\u5e03\u5c14\u578b\u53d8\u91cfisEmployed\uff0c\u521d\u59cb\u503c\u4e3atrue\n<\/code><\/pre>\n\n\n\n<p>\u5909\u6570\u306e\u5024\u306f\u3044\u3064\u3067\u3082\u5909\u66f4\u3067\u304d\u307e\u3059\u3002 \u4f8b\u3048\u3070\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">arduinoCopy code<code>age = 30;  \/\/ \u5c06age\u53d8\u91cf\u7684\u503c\u4fee\u6539\u4e3a30\nsalary = 2000.0;  \/\/ \u5c06salary\u53d8\u91cf\u7684\u503c\u4fee\u6539\u4e3a2000.0\n<\/code><\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306f\u3001Java \u30c7\u30fc\u30bf\u578b\u3068\u5909\u6570\u306e\u57fa\u672c\u6982\u5ff5\u3067\u3059\u3002 Java \u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u4f5c\u6210\u3059\u308b\u5834\u5408\u306f\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u30c7\u30fc\u30bf\u3092\u4fdd\u7ba1\u304a\u3088\u3073\u51e6\u7406\u3059\u308b\u305f\u3081\u306e\u9069\u5207\u306a\u30c7\u30fc\u30bf\u30fb\u30bf\u30a4\u30d7\u3068\u5909\u6570\u3092\u9078\u629e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/edu.ujhb.org\/?p=860\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>Java\u6f14\u7b97\u5b50\u3068\u5f0f\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>Java\u6f14\u7b97\u5b50\u3068\u5f0f\u306f\u3001\u3055\u307e\u3056\u307e\u306a\u6570\u5b66\u6f14\u7b97\u304a\u3088\u3073\u8ad6\u7406\u6f14\u7b97\u3092\u5b9f\u884c\u3059\u308b\u305f\u3081\u306eJava\u306e\u91cd\u8981\u306a\u6982\u5ff5\u3067\u3059\u3002 Java \u6f14\u7b97\u5b50\u3068\u5f0f\u306b\u3064\u3044\u3066\u306f\u3001\u305d\u308c\u305e\u308c\u4ee5\u4e0b\u3067\u8a73\u3057\u304f\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Java \u6f14\u7b97\u5b50 Java \u6f14\u7b97\u5b50\u306f\u3001\u5f0f\u3067\u3055\u307e\u3056\u307e\u306a\u6570\u5b66\u6f14\u7b97\u3001\u6bd4\u8f03\u6f14\u7b97\u3001\u304a\u3088\u3073\u8ad6\u7406\u6f14\u7b97\u3092\u5b9f\u884c\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u8a18\u53f7\u307e\u305f\u306f\u30ad\u30fc\u30ef\u30fc\u30c9\u3067\u3059\u3002 Java \u6f14\u7b97\u5b50\u306f\u3001\u6b21\u306e\u30ab\u30c6\u30b4\u30ea\u306b\u5206\u985e\u3055\u308c\u307e\u3059\u3002\n<ul class=\"wp-block-list\">\n<li>\u7b97\u8853\u6f14\u7b97\u5b50:\u52a0\u7b97\u3001\u6e1b\u7b97\u3001\u4e57\u7b97\u3001\u9664\u7b97\u3001\u4f59\u5270\u306a\u3069\u306e\u57fa\u672c\u7684\u306a\u7b97\u8853\u6f14\u7b97\u3092\u5b9f\u884c\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002 \u305f\u3068\u3048\u3070\u3001+\u3001-\u3001*\u3001\/\u3001% \u306a\u3069\u3067\u3059\u3002<\/li>\n\n\n\n<li>\u95a2\u4fc2\u6f14\u7b97\u5b50: 2 \u3064\u306e\u5024\u306e\u30b5\u30a4\u30ba\u95a2\u4fc2\u3092\u6bd4\u8f03\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u3001\u30d6\u30fc\u30eb\u5024\u3092\u8fd4\u3057\u307e\u3059\u3002 \u305f\u3068\u3048\u3070\u3001&lt;\u3001&gt;\u3001&lt;=\u3001&gt;=\u3001==\u3001!= \u306a\u3069\u3067\u3059\u3002<\/li>\n\n\n\n<li>\u8ad6\u7406\u6f14\u7b97\u5b50: \u8ad6\u7406\u5024\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u64cd\u4f5c\u3057\u3001\u30d6\u30fc\u30eb\u5024\u3092\u8fd4\u3059\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002 \u305f\u3068\u3048\u3070\u3001&amp;&amp; (\u8ad6\u7406 AND)\u3001|| (\u8ad6\u7406\u548c)\u3001! (\u8ad6\u7406\u975e)\u3002<\/li>\n\n\n\n<li>\u4ee3\u5165\u6f14\u7b97\u5b50: \u5909\u6570\u306b\u5024\u3092\u4ee3\u5165\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002 \u305f\u3068\u3048\u3070\u3001=\u3001+=\u3001-=\u3001*=\u3001\/= \u306a\u3069\u3067\u3059\u3002<\/li>\n\n\n\n<li>\u30d3\u30c3\u30c8\u6f14\u7b97\u5b50: 2\u9032\u6570\u306b\u5bfe\u3057\u3066\u30d3\u30c3\u30c8\u6f14\u7b97\u3092\u5b9f\u884c\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002 \u305f\u3068\u3048\u3070\u3001&amp;\u3001|\u3001^\u3001~\u3001&lt;&lt;\u3001&gt;&gt;\u3001&gt;&gt;&gt; \u306a\u3069\u3067\u3059\u3002<\/li>\n\n\n\n<li>\u305d\u306e\u4ed6\u306e\u6f14\u7b97\u5b50: \u4e09\u9805\u6f14\u7b97\u5b50 (?:)\u3001instanceof \u6f14\u7b97\u5b50 (\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3067\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u30c6\u30b9\u30c8\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528)\u3001++ (\u30aa\u30fc\u30c8\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30c8)\u3001\u2013 (\u30c7\u30af\u30ea\u30e1\u30f3\u30c8) \u306a\u3069\u304c\u542b\u307e\u308c\u307e\u3059\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Java \u5f0fJava \u5f0f\u306f\u3001\u6f14\u7b97\u5b50\u3001\u30aa\u30da\u30e9\u30f3\u30c9\u3001\u304a\u3088\u3073\u305d\u306e\u4ed6\u306e\u5f0f\u3067\u69cb\u6210\u3055\u308c\u308b\u69cb\u9020\u4f53\u3067\u3059\u3002 Java \u5f0f\u306b\u306f\u3001\u7b97\u8853\u6f14\u7b97\u5b50\u3001\u8ad6\u7406\u6f14\u7b97\u5b50\u3001\u95a2\u4fc2\u6f14\u7b97\u5b50\u306a\u3069\u3001\u3055\u307e\u3056\u307e\u306a\u7a2e\u985e\u306e\u6f14\u7b97\u5b50\u3092\u542b\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 Java\u5f0f\u306f\u3001\u6574\u6570\u3001\u6d6e\u52d5\u5c0f\u6570\u70b9\u6570\u3001\u30d6\u30fc\u30eb\u5024\u3001\u6587\u5b57\u306a\u3069\u3001\u3055\u307e\u3056\u307e\u306a\u7a2e\u985e\u306e\u30c7\u30fc\u30bf\u3067\u3042\u308b\u5024\u3092\u8fd4\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u305f\u3068\u3048\u3070\u3001Java \u5f0f\u306e\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>2 + 3 \/\/ \u6574\u6570 5 \u3092\u8fd4\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>10 % 3 \/\/ \u6574\u6570 1 \u3092\u8fd4\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>true &amp; false \/\/ \u30d6\u30fc\u30eb\u5024 false \u3092\u8fd4\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>&#8216;a&#8217; == &#8216;b&#8217; \/\/ \u30d6\u30fc\u30eb\u5024 false \u3092\u8fd4\u3057\u307e\u3059<\/li>\n\n\n\n<li>(10 &gt; 5) ? &#8220;yes&#8221; : &#8220;no&#8221; \/\/ \u6587\u5b57\u5217 &#8220;yes&#8221; \u3092\u8fd4\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<p>Java\u5f0f\u306f\u3001\u4ee3\u5165\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3001\u6761\u4ef6\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3001\u30eb\u30fc\u30d7\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306a\u3069\u306e\u3055\u307e\u3056\u307e\u306a\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3067\u4f7f\u7528\u3057\u3066\u3001\u3055\u307e\u3056\u307e\u306a\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3084\u8ad6\u7406\u6f14\u7b97\u3092\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u3089\u306f\u3001Java \u6f14\u7b97\u5b50\u3068\u5f0f\u306e\u57fa\u672c\u6982\u5ff5\u3067\u3059\u3002 Java\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u66f8\u304f\u969b\u306b\u306f\u3001\u69d8\u3005\u306a\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3084\u8ad6\u7406\u6f14\u7b97\u3092\u5b9f\u88c5\u3059\u308b\u305f\u3081\u306b\u3001\u69d8\u3005\u306a\u6f14\u7b97\u5b50\u3084\u5f0f\u3092\u67d4\u8edf\u306b\u4f7f\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/edu.ujhb.org\/?p=860\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>Java\u5236\u5fa1\u30d5\u30ed\u30fc\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>Java \u306e if \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306f\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u30d5\u30ed\u30fc\u3092\u5236\u5fa1\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u6761\u4ef6\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3067\u3059\u3002 if \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306f\u3001\u7279\u5b9a\u306e\u6761\u4ef6\u306b\u57fa\u3065\u3044\u3066\u7279\u5b9a\u306e\u30b3\u30fc\u30c9 \u30d6\u30ed\u30c3\u30af\u3092\u5b9f\u884c\u3059\u308b\u304b\u3069\u3046\u304b\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002 if \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306e\u57fa\u672c\u7684\u306a\u69cb\u6587\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">rubyCopy code<code>if (\u6761\u4ef6) {\n    \/\/ \u6761\u4ef6\u4e3atrue\u65f6\u6267\u884c\u7684\u4ee3\u7801\u5757\n}\n<\/code><\/pre>\n\n\n\n<p>if \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3067\u306f\u3001\u6761\u4ef6\u306f\u5024\u304c true \u307e\u305f\u306f false \u306e\u30d6\u30fc\u30eb\u5f0f\u3067\u3059\u3002 \u6761\u4ef6\u304c true \u306e\u5834\u5408\u3001\u30b3\u30fc\u30c9 \u30d6\u30ed\u30c3\u30af\u5185\u306e\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u304c\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002 \u305d\u308c\u4ee5\u5916\u306e\u5834\u5408\u306f\u3001\u30b3\u30fc\u30c9 \u30d6\u30ed\u30c3\u30af\u5185\u306e\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u30b9\u30ad\u30c3\u30d7\u3057\u3001\u6b21\u306e\u30b3\u30fc\u30c9\u306e\u5b9f\u884c\u3092\u7d9a\u884c\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>if \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3067\u306f\u3001else \u53e5\u3092\u4f7f\u7528\u3057\u3066\u3001\u6761\u4ef6\u304c false \u306e\u5834\u5408\u306b\u5b9f\u884c\u3055\u308c\u308b\u30b3\u30fc\u30c9 \u30d6\u30ed\u30c3\u30af\u3092\u63d0\u4f9b\u3067\u304d\u307e\u3059\u3002 \u4f8b\u3048\u3070\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">rubyCopy code<code>if (\u6761\u4ef6) {\n    \/\/ \u6761\u4ef6\u4e3atrue\u65f6\u6267\u884c\u7684\u4ee3\u7801\u5757\n} else {\n    \/\/ \u6761\u4ef6\u4e3afalse\u65f6\u6267\u884c\u7684\u4ee3\u7801\u5757\n}\n<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u5834\u5408\u3001\u6761\u4ef6\u304c\u771f\u3067\u3042\u308c\u3070\u3001if \u30b3\u30fc\u30c9\u30d6\u30ed\u30c3\u30af\u5185\u306e\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u304c\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002 \u305d\u308c\u4ee5\u5916\u306e\u5834\u5408\u306f\u3001else \u30b3\u30fc\u30c9 \u30d6\u30ed\u30c3\u30af\u306e\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>if \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u5165\u308c\u5b50\u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3064\u307e\u308a\u3001if \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306f if \u30b3\u30fc\u30c9 \u30d6\u30ed\u30c3\u30af\u5185\u306b\u5165\u308c\u5b50\u306b\u306a\u308a\u307e\u3059\u3002 \u4f8b\u3048\u3070\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">rubyCopy code<code>if (\u6761\u4ef61) {\n    \/\/ \u6761\u4ef61\u4e3atrue\u65f6\u6267\u884c\u7684\u4ee3\u7801\u5757\n    if (\u6761\u4ef62) {\n        \/\/ \u6761\u4ef62\u4e3atrue\u65f6\u6267\u884c\u7684\u4ee3\u7801\u5757\n    }\n} else {\n    \/\/ \u6761\u4ef61\u4e3afalse\u65f6\u6267\u884c\u7684\u4ee3\u7801\u5757\n}\n<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u5834\u5408\u3001\u6761\u4ef6 1 \u304c true \u306e\u5834\u5408\u3001\u5916\u5074\u306e if \u30b3\u30fc\u30c9 \u30d6\u30ed\u30c3\u30af\u306e\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u304c\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002 \u6761\u4ef6 1 \u304c false \u306e\u5834\u5408\u3001else \u30b3\u30fc\u30c9 \u30d6\u30ed\u30c3\u30af\u5185\u306e\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u304c\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002 \u6761\u4ef6 1 \u304c\u771f\u3067\u3001\u6761\u4ef6 2 \u3082\u771f\u306e\u5834\u5408\u3001\u5185\u90e8 if \u30b3\u30fc\u30c9 \u30d6\u30ed\u30c3\u30af\u306e\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u304c\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>if \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3067\u306f\u3001else if \u53e5\u3092\u4f7f\u7528\u3057\u3066\u8907\u6570\u306e\u6761\u4ef6\u3092\u30c6\u30b9\u30c8\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002 \u4f8b\u3048\u3070\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">rubyCopy code<code>if (\u6761\u4ef61) {\n    \/\/ \u6761\u4ef61\u4e3atrue\u65f6\u6267\u884c\u7684\u4ee3\u7801\u5757\n} else if (\u6761\u4ef62) {\n    \/\/ \u6761\u4ef62\u4e3atrue\u65f6\u6267\u884c\u7684\u4ee3\u7801\u5757\n} else if (\u6761\u4ef63) {\n    \/\/ \u6761\u4ef63\u4e3atrue\u65f6\u6267\u884c\u7684\u4ee3\u7801\u5757\n} else {\n    \/\/ \u6240\u6709\u6761\u4ef6\u90fd\u4e3afalse\u65f6\u6267\u884c\u7684\u4ee3\u7801\u5757\n}\n<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u5834\u5408\u3001\u6761\u4ef6 1 \u304c true \u306e\u5834\u5408\u3001\u6700\u521d\u306e if \u30d6\u30ed\u30c3\u30af\u306e\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u304c\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002 \u6761\u4ef6 1 \u304c\u507d\u3067\u6761\u4ef6 2 \u304c\u771f\u306e\u5834\u5408\u3001&lt;&gt; \u756a\u76ee\u306e else if \u30d6\u30ed\u30c3\u30af\u306e\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u304c\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002 \u306a\u3069\u306a\u3069\u3002 \u3059\u3079\u3066\u306e\u6761\u4ef6\u304c false \u306e\u5834\u5408\u3001else \u30b3\u30fc\u30c9 \u30d6\u30ed\u30c3\u30af\u5185\u306e\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u304c\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4e0a\u8a18\u306f\u3001if\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306e\u57fa\u672c\u7684\u306a\u69cb\u6587\u3068\u4f7f\u7528\u6cd5\u3067\u3059\u3002 if \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306f\u3001Java \u3067\u6700\u3082\u57fa\u672c\u7684\u3067\u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u308b\u5236\u5fa1\u30d5\u30ed\u30fc\u30fb\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306e 1 \u3064\u3067\u3042\u308a\u3001Java \u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u4f5c\u6210\u3059\u308b\u969b\u306b\u306f\u7fd2\u719f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/edu.ujhb.org\/?p=860\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>Java\u5236\u5fa1\u30d5\u30ed\u30fc\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>Java \u306e for \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306f\u3001\u7279\u5b9a\u306e\u30b3\u30fc\u30c9\u30d6\u30ed\u30c3\u30af\u306e\u5b9f\u884c\u3092\u30eb\u30fc\u30d7\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u5236\u5fa1\u30d5\u30ed\u30fc\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3067\u3059\u3002 for \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3067\u306f\u3001\u30eb\u30fc\u30d7\u306e\u6570\u3092\u5236\u5fa1\u3059\u308b\u30eb\u30fc\u30d7 \u30ab\u30a6\u30f3\u30bf\u30fc\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002 for \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306e\u57fa\u672c\u7684\u306a\u69cb\u6587\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">scssCopy code<code>for (\u521d\u59cb\u5316\u8868\u8fbe\u5f0f; \u5faa\u73af\u6761\u4ef6; \u66f4\u65b0\u8868\u8fbe\u5f0f) {\n    \/\/ \u5faa\u73af\u4f53\u4ee3\u7801\u5757\n}\n<\/code><\/pre>\n\n\n\n<p>for \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3067\u306f\u3001\u521d\u671f\u5316\u5f0f\u306f\u30eb\u30fc\u30d7\u306e\u958b\u59cb\u524d\u306b\u5b9f\u884c\u3055\u308c\u308b\u5f0f\u3067\u3042\u308a\u3001\u30eb\u30fc\u30d7 \u30ab\u30a6\u30f3\u30bf\u30fc\u306e\u521d\u671f\u5316\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002 \u30eb\u30fc\u30d7\u6761\u4ef6\u306f\u3001\u30eb\u30fc\u30d7 \u30ab\u30a6\u30f3\u30bf\u30fc\u306e\u5024\u304c\u6761\u4ef6\u3092\u6e80\u305f\u3059\u304b\u3069\u3046\u304b\u3092\u30c6\u30b9\u30c8\u3059\u308b\u30d6\u30fc\u30eb\u5f0f\u3067\u3059\u3002 \u66f4\u65b0\u5f0f\u306f\u3001\u30eb\u30fc\u30d7 \u30ab\u30a6\u30f3\u30bf\u30fc\u306e\u5024\u3092\u66f4\u65b0\u3059\u308b\u305f\u3081\u306b\u5404\u30eb\u30fc\u30d7\u306e\u7d42\u4e86\u524d\u306b\u5b9f\u884c\u3055\u308c\u308b\u5f0f\u3067\u3059\u3002 \u30eb\u30fc\u30d7\u672c\u4f53\u306e\u30b3\u30fc\u30c9\u30d6\u30ed\u30c3\u30af\u306f\u3001\u5404\u30eb\u30fc\u30d7\u3067\u5b9f\u884c\u3055\u308c\u308b\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u306f\u3001for \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u30eb\u30fc\u30d7\u3092\u4f7f\u7528\u3057\u3066\u6570\u5024\u3092\u51fa\u529b\u3059\u308b\u65b9\u6cd5\u3092\u793a\u3059\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">cssCopy code<code>for (int i = 0; i &lt; 10; i++) {\n    System.out.println(i);\n}\n<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001\u30eb\u30fc\u30d7\u30ab\u30a6\u30f3\u30bfi\u306e\u521d\u671f\u5024\u306f0\u3001\u30eb\u30fc\u30d7\u6761\u4ef6\u306fi\u304c10\u672a\u6e80\u3001\u66f4\u65b0\u5f0f\u306f\u5404\u30eb\u30fc\u30d7i\u306e\u5024\u306b1\u3092\u52a0\u3048\u305f\u5024\u3067\u3059\u3002 \u3057\u305f\u304c\u3063\u3066\u3001for\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306f10\u56de\u30eb\u30fc\u30d7\u3057\u3001\u305d\u308c\u305e\u308c0\u304b\u30899\u307e\u3067\u306e\u6570\u5024\u3092\u51fa\u529b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>For \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306f\u5165\u308c\u5b50\u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3064\u307e\u308a\u3001for \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306f for \u30eb\u30fc\u30d7\u672c\u4f53\u306e\u30b3\u30fc\u30c9 \u30d6\u30ed\u30c3\u30af\u306b\u5165\u308c\u5b50\u306b\u306a\u308a\u307e\u3059\u3002 \u4f8b\u3048\u3070\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">csharpCopy code<code>for (int i = 0; i &lt; 5; i++) {\n    for (int j = 0; j &lt; 5; j++) {\n        System.out.println(i + \",\" + j);\n    }\n}\n<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001\u5916\u5074\u306e\u30eb\u30fc\u30d7\u30ab\u30a6\u30f3\u30bfi\u306e\u521d\u671f\u5024\u306f0\u3001\u30eb\u30fc\u30d7\u6761\u4ef6\u306fi\u304c5\u672a\u6e80\u3001\u66f4\u65b0\u5f0f\u306f\u5404\u30eb\u30fc\u30d7i\u306e\u5024\u306b1\u3092\u52a0\u3048\u305f\u5024\u3067\u3059\u3002 \u5185\u5074\u306e\u30eb\u30fc\u30d7\u30ab\u30a6\u30f3\u30bfJ\u306e\u521d\u671f\u5024\u306f0\u3001\u30eb\u30fc\u30d7\u6761\u4ef6\u306fJ\u304c5\u672a\u6e80\u3067\u3042\u308a\u3001\u66f4\u65b0\u5f0f\u306f\u5404\u30eb\u30fc\u30d7J\u306eJ\u306b1\u3092\u52a0\u3048\u305f\u5024\u3067\u3059\u3002 \u3057\u305f\u304c\u3063\u3066\u3001for \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306f 25 \u56de\u30eb\u30fc\u30d7\u3057\u3001\u3059\u3079\u3066\u306e\u7d44\u307f\u5408\u308f\u305b\u3092\u51fa\u529b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>for \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3067\u306f\u3001foreach \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u4f7f\u7528\u3057\u3066\u3001\u914d\u5217\u307e\u305f\u306f\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u5185\u306e\u8981\u7d20\u3092\u53cd\u5fa9\u51e6\u7406\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002 \u4f8b\u3048\u3070\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">cCopy code<code>int[] array = {1, 2, 3, 4, 5};\nfor (int i : array) {\n    System.out.println(i);\n}\n<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001foreach \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u4f7f\u7528\u3057\u3066\u914d\u5217\u5185\u306e\u3059\u3079\u3066\u306e\u8981\u7d20\u3092\u30eb\u30fc\u30d7\u51e6\u7406\u3057\u3001\u5404\u8981\u7d20\u306e\u5024\u304c\u51fa\u529b\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4e0a\u8a18\u306f\u3001for\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306e\u57fa\u672c\u7684\u306a\u69cb\u6587\u3068\u4f7f\u7528\u6cd5\u3067\u3059\u3002 for \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306f\u3001Java \u3067\u6700\u3082\u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u308b\u5236\u5fa1\u30d5\u30ed\u30fc\u30fb\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306e 1 \u3064\u3067\u3042\u308a\u3001Java \u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u4f5c\u6210\u3059\u308b\u969b\u306b\u306f\u7fd2\u719f\u5ea6\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/edu.ujhb.org\/?p=860\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>Java\u5236\u5fa1\u30d5\u30ed\u30fc\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>Java \u306e while \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306f\u3001\u7279\u5b9a\u306e\u30b3\u30fc\u30c9\u30d6\u30ed\u30c3\u30af\u306e\u5b9f\u884c\u3092\u30eb\u30fc\u30d7\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u5236\u5fa1\u30d5\u30ed\u30fc\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3067\u3059\u3002 while \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306f\u3001\u6761\u4ef6\u304c\u6210\u7acb\u3057\u306a\u304f\u306a\u308b\u307e\u3067\u3001\u6307\u5b9a\u3055\u308c\u305f\u6761\u4ef6\u306b\u5f93\u3063\u3066\u30b3\u30fc\u30c9 \u30d6\u30ed\u30c3\u30af\u3092\u30eb\u30fc\u30d7\u3057\u307e\u3059\u3002 while \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306e\u57fa\u672c\u7684\u306a\u69cb\u6587\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">arduinoCopy code<code>while (\u5faa\u73af\u6761\u4ef6) {\n    \/\/ \u5faa\u73af\u4f53\u4ee3\u7801\u5757\n}\n<\/code><\/pre>\n\n\n\n<p>while \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3067\u306f\u3001\u30eb\u30fc\u30d7\u6761\u4ef6\u306f\u3001\u30eb\u30fc\u30d7\u6761\u4ef6\u304c\u6210\u308a\u7acb\u3064\u304b\u3069\u3046\u304b\u3092\u30c6\u30b9\u30c8\u3059\u308b\u30d6\u30fc\u30eb\u5f0f\u3067\u3059\u3002 \u30eb\u30fc\u30d7\u6761\u4ef6\u304c true \u306e\u5834\u5408\u3001\u30eb\u30fc\u30d7\u672c\u4f53\u306e\u30b3\u30fc\u30c9 \u30d6\u30ed\u30c3\u30af\u304c\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002 \u305d\u308c\u4ee5\u5916\u306e\u5834\u5408\u306f\u3001\u30eb\u30fc\u30d7\u672c\u6587\u306e\u30b3\u30fc\u30c9 \u30d6\u30ed\u30c3\u30af\u3092\u30b9\u30ad\u30c3\u30d7\u3057\u3001\u5f8c\u7d9a\u306e\u30b3\u30fc\u30c9\u306e\u5b9f\u884c\u3092\u7d9a\u884c\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>while \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u4f7f\u7528\u3057\u3066\u6570\u5024\u3092\u30eb\u30fc\u30d7\u30a2\u30a6\u30c8\u3059\u308b\u65b9\u6cd5\u3092\u793a\u3059\u30b5\u30f3\u30d7\u30eb \u30b3\u30fc\u30c9\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">cssCopy code<code>int i = 0;\nwhile (i &lt; 10) {\n    System.out.println(i);\n    i++;\n}\n<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001\u5909\u6570 i \u306e\u521d\u671f\u5024\u306f 0 \u3067\u3001\u30eb\u30fc\u30d7\u6761\u4ef6\u306f i \u304c 10 \u672a\u6e80\u3067\u3042\u308b\u3053\u3068\u3067\u3059\u3002 \u5404\u30eb\u30fc\u30d7\u3067\u3001i\u304c10\u672a\u6e80\u306e\u5834\u5408\u3001\u30eb\u30fc\u30d7\u672c\u4f53\u306e\u30b3\u30fc\u30c9\u30d6\u30ed\u30c3\u30af\u304c\u5b9f\u884c\u3055\u308c\u3001i\u306e\u5024\u304c\u51fa\u529b\u3055\u308c\u3001i\u304c1\u305a\u3064\u52a0\u7b97\u3055\u308c\u307e\u3059\u3002 \u305d\u308c\u4ee5\u5916\u306e\u5834\u5408\u306f\u3001\u30eb\u30fc\u30d7\u672c\u6587\u306e\u30b3\u30fc\u30c9 \u30d6\u30ed\u30c3\u30af\u3092\u30b9\u30ad\u30c3\u30d7\u3057\u3001\u5f8c\u7d9a\u306e\u30b3\u30fc\u30c9\u306e\u5b9f\u884c\u3092\u7d9a\u884c\u3057\u307e\u3059\u3002 \u3057\u305f\u304c\u3063\u3066\u3001\u3053\u306ewhile\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306f10\u56de\u30eb\u30fc\u30d7\u3057\u3001\u305d\u308c\u305e\u308c0\u304b\u30899\u307e\u3067\u306e\u6570\u5024\u3092\u51fa\u529b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>while \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306f\u5165\u308c\u5b50\u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3064\u307e\u308a\u3001while \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306f while \u30eb\u30fc\u30d7\u672c\u4f53\u30b3\u30fc\u30c9 \u30d6\u30ed\u30c3\u30af\u5185\u306b\u5165\u308c\u5b50\u306b\u306a\u308a\u307e\u3059\u3002 \u4f8b\u3048\u3070\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">csharpCopy code<code>int i = 0;\nwhile (i &lt; 5) {\n    int j = 0;\n    while (j &lt; 5) {\n        System.out.println(i + \",\" + j);\n        j++;\n    }\n    i++;\n}\n<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001\u5916\u5074\u306e\u30eb\u30fc\u30d7 \u30ab\u30a6\u30f3\u30bf i \u306e\u521d\u671f\u5024\u306f 0 \u3067\u3001\u30eb\u30fc\u30d7\u6761\u4ef6\u306f i \u304c 5 \u672a\u6e80\u3067\u3059\u3002 \u5185\u5074\u306e\u30eb\u30fc\u30d7\u30ab\u30a6\u30f3\u30bfj\u306e\u521d\u671f\u5024\u306f0\u3067\u3042\u308a\u3001\u30eb\u30fc\u30d7\u6761\u4ef6\u306fj\u304c5\u672a\u6e80\u3067\u3042\u308b\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002 \u3057\u305f\u304c\u3063\u3066\u3001while \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306f 25 \u56de\u30eb\u30fc\u30d7\u3057\u3001\u3059\u3079\u3066\u306e\u7d44\u307f\u5408\u308f\u305b\u3092\u51fa\u529b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>while \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3067\u306f\u3001do-while \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u4f7f\u7528\u3057\u3066\u3001\u5c11\u306a\u304f\u3068\u3082 1 \u56de\u5b9f\u884c\u3055\u308c\u308b\u30eb\u30fc\u30d7\u3092\u5b9f\u88c5\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002 \u4f8b\u3048\u3070\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">csharpCopy code<code>int i = 0;\ndo {\n    System.out.println(i);\n    i++;\n} while (i &lt; 10);\n<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001\u5909\u6570 i \u306e\u521d\u671f\u5024\u306f 0 \u3067\u3001\u30eb\u30fc\u30d7\u6761\u4ef6\u306f i \u304c 10 \u672a\u6e80\u3067\u3042\u308b\u3053\u3068\u3067\u3059\u3002 \u30eb\u30fc\u30d7\u3092\u5b9f\u884c\u3059\u308b\u524d\u306b\u3001\u30eb\u30fc\u30d7\u672c\u4f53\u306e\u30b3\u30fc\u30c9\u30d6\u30ed\u30c3\u30af\u3092\u4e00\u5ea6\u5b9f\u884c\u3057\u3066\u304f\u3060\u3055\u3044\u3002 \u3057\u305f\u304c\u3063\u3066\u3001do-while \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306f 10 \u56de\u30eb\u30fc\u30d7\u3057\u3001\u305d\u308c\u305e\u308c 0 \u304b\u3089 9 \u307e\u3067\u306e\u6570\u5024\u3092\u51fa\u529b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4e0a\u8a18\u306f\u3001while \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306e\u57fa\u672c\u7684\u306a\u69cb\u6587\u3068\u4f7f\u7528\u6cd5\u3067\u3059\u3002 while \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306f\u3001Java \u3067\u6700\u3082\u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u308b\u5236\u5fa1\u30d5\u30ed\u30fc\u30fb\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306e 1 \u3064\u3067\u3042\u308a\u3001Java \u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u4f5c\u6210\u3059\u308b\u969b\u306b\u306f\u7fd2\u719f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/edu.ujhb.org\/?p=860\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>Java\u306e\u914d\u5217\u3092\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>Java\u306e\u914d\u5217\u306f\u3001\u540c\u3058\u578b\u306e\u8907\u6570\u306e\u8981\u7d20\u3092\u683c\u7d0d\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u30c7\u30fc\u30bf\u69cb\u9020\u3067\u3059\u3002 \u914d\u5217\u306b\u306f\u3001\u6574\u6570\u3001\u6d6e\u52d5\u5c0f\u6570\u70b9\u6570\u3001\u6587\u5b57\u3001\u30d6\u30fc\u30eb\u5024\u306a\u3069\u3001\u4efb\u610f\u306e\u7a2e\u985e\u306e\u30c7\u30fc\u30bf\u3092\u683c\u7d0d\u3067\u304d\u307e\u3059\u3002 Java\u3067\u306f\u3001\u914d\u5217\u306f\u9577\u3055\u30d7\u30ed\u30d1\u30c6\u30a3\u3068\u914d\u5217\u8981\u7d20\u306e\u64cd\u4f5c\u3092\u5bb9\u6613\u306b\u3059\u308b\u3055\u307e\u3056\u307e\u306a\u30e1\u30bd\u30c3\u30c9\u3092\u6301\u3064\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u3059\u3002<\/p>\n\n\n\n<p>Java \u914d\u5217\u306e\u57fa\u672c\u7684\u306a\u6982\u5ff5\u3068\u69cb\u6587\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Java \u3067\u914d\u5217\u3092\u5ba3\u8a00\u3059\u308b\u306b\u306f\u3001\u914d\u5217\u306e\u30bf\u30a4\u30d7\u3068\u540d\u524d\u3092\u6307\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u305f\u3068\u3048\u3070\u3001\u6574\u6570\u914d\u5217\u3092\u5ba3\u8a00\u3059\u308b\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">arduinoCopy code<code>int[] myArray;\n<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306f\u3001myArray \u3068\u3044\u3046\u540d\u524d\u306e\u6574\u6570\u914d\u5217\u3092\u5ba3\u8a00\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>\u914d\u5217\u3092\u4f5c\u6210\u3059\u308b \u914d\u5217\u3092\u5ba3\u8a00\u3057\u305f\u3089\u3001\u914d\u5217\u3092\u4f5c\u6210\u3057\u3001\u30e1\u30e2\u30ea\u9818\u57df\u3092\u5272\u308a\u5f53\u3066\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 Java \u3067\u306f\u3001new \u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u4f7f\u7528\u3057\u3066\u914d\u5217\u3092\u4f5c\u6210\u3067\u304d\u307e\u3059\u3002 \u305f\u3068\u3048\u3070\u30015\u3064\u306e\u6574\u6570\u306e\u914d\u5217\u3092\u4f5c\u6210\u3059\u308b\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">arduinoCopy code<code>myArray = new int[5];\n<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306f\u30015 \u3064\u306e\u6574\u6570\u3092\u542b\u3080\u6574\u6570\u914d\u5217\u3092\u4f5c\u6210\u3057\u3001\u305d\u308c\u3092 myArray \u5909\u6570\u306b\u4ee3\u5165\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\">\n<li>\u914d\u5217\u3092\u521d\u671f\u5316\u3059\u308b \u914d\u5217\u3092\u4f5c\u6210\u3057\u305f\u3089\u3001\u6dfb\u5b57 (\u30a4\u30f3\u30c7\u30c3\u30af\u30b9) \u3092\u4f7f\u7528\u3057\u3066\u914d\u5217\u5185\u306e\u8981\u7d20\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u307e\u3059\u3002 \u914d\u5217\u306e\u6dfb\u3048\u5b57\u306f 0 \u304b\u3089\u59cb\u307e\u308a\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001myArray[0] \u306f\u914d\u5217\u306e\u6700\u521d\u306e\u8981\u7d20\u3092\u8868\u3057\u3001myArray[1] \u306f\u914d\u5217\u306e &lt;&gt; \u756a\u76ee\u306e\u8981\u7d20\u3092\u8868\u3057\u307e\u3059\u3002 \u4ee3\u5165\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u4f7f\u7528\u3057\u3066\u3001\u914d\u5217\u5185\u306e\u8981\u7d20\u3092\u521d\u671f\u5316\u3067\u304d\u307e\u3059\u3002 \u305f\u3068\u3048\u3070\u3001\u914d\u5217\u5185\u306e\u8981\u7d20\u3092\u521d\u671f\u5316\u3059\u308b\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">cssCopy code<code>myArray[0] = 1;\nmyArray[1] = 2;\nmyArray[2] = 3;\nmyArray[3] = 4;\nmyArray[4] = 5;\n<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306f\u3001\u914d\u5217\u306e\u6700\u521d\u306e 1 \u3064\u306e\u8981\u7d20\u306b 2\u30013\u30014\u30015\u3001\u304a\u3088\u3073 5 \u3092\u5272\u308a\u5f53\u3066\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"4\">\n<li>Java \u3067\u306f\u3001length \u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f7f\u7528\u3057\u3066\u914d\u5217\u306e\u9577\u3055\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002 \u305f\u3068\u3048\u3070\u3001\u914d\u5217\u306e\u9577\u3055\u3092\u53d6\u5f97\u3059\u308b\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">goCopy code<code>int len = myArray.length;\n<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306f\u3001myArray \u914d\u5217\u306e\u9577\u3055\u3092\u53d6\u5f97\u3057\u3001\u305d\u308c\u3092\u5909\u6570 len \u306b\u4ee3\u5165\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"5\">\n<li>\u914d\u5217\u306e\u8d70\u67fb for \u30eb\u30fc\u30d7\u3092\u4f7f\u7528\u3057\u3066\u3001\u914d\u5217\u5185\u306e\u3059\u3079\u3066\u306e\u8981\u7d20\u3092\u53cd\u5fa9\u51e6\u7406\u3067\u304d\u307e\u3059\u3002 \u305f\u3068\u3048\u3070\u3001\u914d\u5217\u5185\u306e\u3059\u3079\u3066\u306e\u8981\u7d20\u3092\u53cd\u5fa9\u51e6\u7406\u3059\u308b\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">cssCopy code<code>for (int i = 0; i &lt; myArray.length; i++) {\n    System.out.println(myArray[i]);\n}\n<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306f\u3001myArray \u914d\u5217\u5185\u306e\u3059\u3079\u3066\u306e\u8981\u7d20\u3092\u9806\u756a\u306b\u51fa\u529b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"6\">\n<li>\u591a\u6b21\u5143\u914d\u5217 Java \u306e\u914d\u5217\u306f\u591a\u6b21\u5143\u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u305f\u3068\u3048\u3070\u30012 \u6b21\u5143\u6574\u6570\u914d\u5217\u306e\u5ba3\u8a00\u3068\u521d\u671f\u5316\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">cssCopy code<code>int[][] myArray = new int[3][3];\nmyArray[0][0] = 1;\nmyArray[0][1] = 2;\nmyArray[0][2] = 3;\nmyArray[1][0] = 4;\nmyArray[1][1] = 5;\nmyArray[1][2] = 6;\nmyArray[2][0] = 7;\nmyArray[2][1] = 8;\nmyArray[2][2] = 9;\n<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306f\u3001\u5ba3\u8a00\u3068\u521d\u671f\u5316\u3092\u884c\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/edu.ujhb.org\/?p=860\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>Java\u306e\u4ed6\u306e\u8907\u96d1\u306a\u30c7\u30fc\u30bf\u578b\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>\u914d\u5217\u306b\u52a0\u3048\u3066\u3001Java\u306b\u306f\u3001\u30af\u30e9\u30b9\u3001\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u3001\u5217\u6319\u578b\u3001\u6ce8\u91c8\u306a\u3069\u3001\u4ed6\u306e\u8907\u96d1\u306a\u30c7\u30fc\u30bf\u578b\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Java \u306e\u30af\u30e9\u30b9\u306f\u3001\u30d7\u30ed\u30d1\u30c6\u30a3\u3068\u30e1\u30bd\u30c3\u30c9\u3092\u542b\u3080\u30ab\u30b9\u30bf\u30e0\u30c7\u30fc\u30bf\u578b\u3067\u3059\u3002 \u30af\u30e9\u30b9\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306e\u4e00\u7a2e\u306e\u9752\u5199\u771f\u3068\u8003\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u30af\u30e9\u30b9\u3092\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u3067\u3001\u30c7\u30fc\u30bf\u3068\u52d5\u4f5c\u3092\u30ab\u30d7\u30bb\u30eb\u5316\u3057\u3001\u305d\u308c\u3089\u306e\u30ab\u30d7\u30bb\u30eb\u5316\u3092\u518d\u5229\u7528\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u7c21\u5358\u306a\u30af\u30e9\u30b9\u5b9a\u7fa9\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">arduinoCopy code<code>public class Person {\n    private String name;\n    private int age;\n\n    public Person(String name, int age) {\n        this.name = name;\n        this.age = age;\n    }\n\n    public String getName() {\n        return this.name;\n    }\n\n    public int getAge() {\n        return this.age;\n    }\n\n    public void setName(String name) {\n        this.name = name;\n    }\n\n    public void setAge(int age) {\n        this.age = age;\n    }\n}\n<\/code><\/pre>\n\n\n\n<p>Person \u3068\u547c\u3070\u308c\u308b\u3053\u306e\u30af\u30e9\u30b9\u306b\u306f\u3001\u540d\u524d\u3068\u5e74\u9f62\u3068\u3044\u3046 2 \u3064\u306e\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8 \u30d7\u30ed\u30d1\u30c6\u30a3\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002 \u3053\u306e\u30af\u30e9\u30b9\u306b\u306f\u3001\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u30fc\u3068 4 \u3064\u306e\u30e1\u30bd\u30c3\u30c9 (getName\u3001getAge\u3001setName\u3001\u304a\u3088\u3073 setAge ) \u3082\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002 \u3053\u308c\u3089\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u5024\u3092\u53d6\u5f97\u304a\u3088\u3073\u8a2d\u5b9a\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>Java\u306e\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u306f\u3001\u5177\u4f53\u7684\u306a\u5b9f\u88c5\u306a\u3057\u3067\u4e00\u9023\u306e\u30e1\u30bd\u30c3\u30c9\u306e\u4ed5\u69d8\u3092\u5b9a\u7fa9\u3059\u308b\u5236\u7d04\u3067\u3059\u3002 \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u5185\u306e\u3059\u3079\u3066\u306e\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u30d1\u30d6\u30ea\u30c3\u30af\u3001\u62bd\u8c61\u3001\u304a\u3088\u3073\u30b9\u30c6\u30fc\u30c8\u30ec\u30b9\u3067\u3042\u308a\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3092\u5b9f\u88c5\u3059\u308b\u30af\u30e9\u30b9\u306b\u3088\u3063\u3066\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u304a\u3088\u3073\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3067\u304d\u307e\u3059\u3002 \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u4ecb\u3057\u3066\u3001\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30c3\u30af\u3067\u67d4\u8edf\u306a\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u5358\u7d14\u306a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u306e\u5b9a\u7fa9\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">csharpCopy code<code>public interface Animal {\n    void eat();\n    void sleep();\n}\n<\/code><\/pre>\n\n\n\n<p>Animal \u3068\u547c\u3070\u308c\u308b\u3053\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u306b\u306f\u3001\u98df\u3079\u308b\u30e1\u30bd\u30c3\u30c9\u3068\u7720\u308b\u30e1\u30bd\u30c3\u30c9\u306e 2 \u3064\u306e\u30e1\u30bd\u30c3\u30c9\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002 Animal \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3092\u5b9f\u88c5\u3059\u308b\u30af\u30e9\u30b9\u306f\u3001\u4e21\u65b9\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u5b9f\u88c5\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\">\n<li>\u5217\u6319 Java \u306e\u5217\u6319\u578b\u306f\u3001\u56fa\u5b9a\u6570\u306e\u5b9a\u6570\u5024\u3092\u8868\u3059\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u7279\u6b8a\u306a\u30c7\u30fc\u30bf\u578b\u3067\u3059\u3002 \u5217\u6319\u4f53\u306e\u5404\u5024\u306f\u4e00\u610f\u3067\u3042\u308a\u3001\u72ec\u81ea\u306e\u540d\u524d\u3092\u6301\u3061\u307e\u3059\u3002 \u5217\u6319\u4f53\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30b3\u30fc\u30c9\u306e\u8aad\u307f\u3084\u3059\u3055\u3068\u4fdd\u5b88\u6027\u3092\u5411\u4e0a\u3055\u305b\u308b\u30bf\u30a4\u30d7 \u30bb\u30fc\u30d5\u306a\u5b9a\u6570\u3092\u4f5c\u6210\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u5358\u7d14\u306a\u5217\u6319\u306e\u5b9a\u7fa9\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">arduinoCopy code<code>public enum Weekday {\n    MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY, SATURDAY, SUNDAY;\n}\n<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u5217\u6319\u4f53\u306f Weekday \u3068\u547c\u3070\u308c\u3001\u6708\u66dc\u65e5\u3001\u706b\u66dc\u65e5\u3001\u6c34\u66dc\u65e5\u3001\u6728\u66dc\u65e5\u3001\u91d1\u66dc\u65e5\u3001\u571f\u66dc\u65e5\u3001\u65e5\u66dc\u65e5\u306e 7 \u3064\u306e\u5024\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002 \u5404\u5024\u306f\u4e00\u610f\u3067\u3042\u308a\u3001\u5217\u6319\u540d\u3067\u53c2\u7167\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"4\">\n<li>Java \u306e\u6ce8\u91c8\u306f\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u5185\u306e\u30c7\u30fc\u30bf\u3001\u30af\u30e9\u30b9\u3001\u30e1\u30bd\u30c3\u30c9\u3001\u304a\u3088\u3073\u5909\u6570\u3092\u8a18\u8ff0\u3059\u308b\u30e1\u30bf\u30c7\u30fc\u30bf\u3067\u3059\u3002 \u6ce8\u91c8\u3092\u4f7f\u7528\u3057\u3066\u3001\u60c5\u5831\u306e\u63d0\u4f9b\u3001\u30b3\u30f3\u30d1\u30a4\u30e9\u3078\u306e\u6307\u793a\u3001\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306e\u751f\u6210\u3001\u304a\u3088\u3073\u305d\u306e\u4ed6\u306e\u7279\u5225\u306a\u30bf\u30b9\u30af\u3092\u5b9f\u884c\u3067\u304d\u307e\u3059\u3002 Java\u306e\u6ce8\u91c8\u306f@\u8a18\u53f7\u3067\u59cb\u307e\u308a\u3001\u30af\u30e9\u30b9\u3001\u30e1\u30bd\u30c3\u30c9\u3001\u5909\u6570\u306a\u3069\u306e\u3055\u307e\u3056\u307e\u306a\u8981\u7d20\u306b\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u7c21\u5358\u306a\u6ce8\u91c8\u5b9a\u7fa9\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">scssCopy code<code>public @interface MyAnnotation {\n    String name();\n    String value();\n}\n<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306f MyAnnotation \u3068\u547c\u3070\u308c\u3001\u30d1\u30c3\u30b1\u30fc\u30b8\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/edu.ujhb.org\/?p=860\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>Java\u306e\u95a2\u6570\u3068\u30e1\u30bd\u30c3\u30c9\u3092\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>Java\u3067\u306f\u3001\u95a2\u6570\u3068\u30e1\u30bd\u30c3\u30c9\u306f\u7279\u5b9a\u306e\u30bf\u30b9\u30af\u3092\u5b9f\u884c\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u30b3\u30fc\u30c9\u306e\u30d6\u30ed\u30c3\u30af\u3067\u3059\u3002 \u3069\u3061\u3089\u3082\u3001\u95a2\u6570\u307e\u305f\u306f\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3059\u3053\u3068\u3067\u7279\u5b9a\u306e\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3067\u304d\u308b\u30b3\u30fc\u30c9\u306e\u518d\u5229\u7528\u30e1\u30ab\u30cb\u30ba\u30e0\u3067\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Java\u3067\u306f\u3001\u95a2\u6570\u306f\u901a\u5e38\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u306f\u306a\u304f\u30af\u30e9\u30b9\u306b\u5c5e\u3059\u308b\u9759\u7684\u30e1\u30bd\u30c3\u30c9\u3092\u53c2\u7167\u3057\u307e\u3059\u3002 \u95a2\u6570\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3057\u306a\u304f\u3066\u3082\u3069\u3053\u3067\u3082\u547c\u3073\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u95a2\u6570\u306f\u623b\u308a\u5024\u3092\u6301\u3064\u3053\u3068\u3082\u3001void\u578b\u306b\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059(\u3064\u307e\u308a\u3001\u623b\u308a\u5024\u306f\u3042\u308a\u307e\u305b\u3093)\u3002 \u95a2\u6570\u306e\u69cb\u6587\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">scssCopy code<code>[\u8bbf\u95ee\u4fee\u9970\u7b26] [static] \u8fd4\u56de\u7c7b\u578b \u51fd\u6570\u540d(\u53c2\u6570\u5217\u8868) {\n    \/\/ \u51fd\u6570\u4f53\n}\n<\/code><\/pre>\n\n\n\n<p>\u30a2\u30af\u30bb\u30b9\u4fee\u98fe\u5b50\u3092\u4f7f\u7528\u3057\u3066\u3001\u95a2\u6570\u306e\u8868\u793a\u3068\u30a2\u30af\u30bb\u30b9\u6a29\u3092\u5236\u5fa1\u3057\u307e\u3059\u3002 static \u30ad\u30fc\u30ef\u30fc\u30c9\u306f\u3001\u95a2\u6570\u304c\u9759\u7684\u3067\u3042\u308a\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u306f\u306a\u304f\u30af\u30e9\u30b9\u306b\u5c5e\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u793a\u3059\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002 \u623b\u308a\u5024\u306e\u578b\u306f\u3001\u95a2\u6570\u306e\u623b\u308a\u5024\u306e\u578b\u3092\u8868\u3057\u3001\u4efb\u610f\u306e\u6709\u52b9\u306a Java \u578b\u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u95a2\u6570\u540d\u306f\u95a2\u6570\u306e\u540d\u524d\u3092\u8868\u3057\u3001\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc \u30ea\u30b9\u30c8\u306f\u95a2\u6570\u306b\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u3092\u6e21\u3059\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002 \u95a2\u6570\u672c\u4f53\u306b\u306f\u3001\u5b9f\u884c\u3059\u308b\u30b3\u30fc\u30c9\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u5358\u7d14\u306a\u95a2\u6570\u306e\u5b9a\u7fa9\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">arduinoCopy code<code>public static int add(int a, int b) {\n    return a + b;\n}\n<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u95a2\u6570\u306f add \u3068\u547c\u3070\u308c\u3001\u623b\u308a\u5024\u306e\u578b\u306f int \u3067\u3001a \u3068 b \u306e 2 \u3064\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002 \u95a2\u6570\u672c\u4f53\u306b\u306f\u3001a \u3068 b \u3092\u52a0\u7b97\u3057\u3066\u7d50\u679c\u3092\u8fd4\u3059\u30b3\u30fc\u30c9\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>\u30e1\u30bd\u30c3\u30c9Java\u3067\u306f\u3001\u30e1\u30bd\u30c3\u30c9\u306f\u901a\u5e38\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u5c5e\u3057\u3001\u30af\u30e9\u30b9\u5185\u3067\u5185\u90e8\u7684\u306b\u5b9a\u7fa9\u3055\u308c\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4ecb\u3057\u3066\u547c\u3073\u51fa\u3059\u5fc5\u8981\u304c\u3042\u308b\u52d5\u4f5c\u3092\u53c2\u7167\u3057\u307e\u3059\u3002 \u30e1\u30bd\u30c3\u30c9\u306f\u3001\u623b\u308a\u5024\u3092\u6301\u3064\u3053\u3068\u3082\u3001void \u578b\u306b\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002 \u30e1\u30bd\u30c3\u30c9\u306e\u69cb\u6587\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">scssCopy code<code>[\u8bbf\u95ee\u4fee\u9970\u7b26] \u8fd4\u56de\u7c7b\u578b \u65b9\u6cd5\u540d(\u53c2\u6570\u5217\u8868) {\n    \/\/ \u65b9\u6cd5\u4f53\n}\n<\/code><\/pre>\n\n\n\n<p>\u30a2\u30af\u30bb\u30b9\u4fee\u98fe\u5b50\u3092\u4f7f\u7528\u3057\u3066\u3001\u30e1\u30bd\u30c3\u30c9\u306e\u8868\u793a\u3068\u30a2\u30af\u30bb\u30b9\u6a29\u3092\u5236\u5fa1\u3057\u307e\u3059\u3002 \u623b\u308a\u5024\u306e\u578b\u306f\u3001\u30e1\u30bd\u30c3\u30c9\u306e\u623b\u308a\u5024\u306e\u578b\u3092\u8868\u3057\u3001\u4efb\u610f\u306e\u6709\u52b9\u306a Java \u578b\u3092\u6307\u5b9a\u3067\u304d\u307e\u3059\u3002 \u30e1\u30bd\u30c3\u30c9\u540d\u306f\u30e1\u30bd\u30c3\u30c9\u306e\u540d\u524d\u3092\u8868\u3057\u3001\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc \u30ea\u30b9\u30c8\u306f\u30e1\u30bd\u30c3\u30c9\u306b\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u3092\u6e21\u3059\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002 \u30e1\u30bd\u30c3\u30c9\u672c\u4f53\u306b\u306f\u3001\u5b9f\u884c\u3059\u308b\u30b3\u30fc\u30c9\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u5358\u7d14\u306a\u30e1\u30bd\u30c3\u30c9\u306e\u5b9a\u7fa9\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">csharpCopy code<code>public int getAge() {\n    return this.age;\n}\n<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u30e1\u30bd\u30c3\u30c9\u306f getAge \u3068\u3044\u3046\u540d\u524d\u3067\u3001int \u578b\u3067\u30d1\u30e9\u30e1\u30fc\u30bf\u306a\u3057\u3067\u8fd4\u3057\u307e\u3059\u3002 \u30e1\u30bd\u30c3\u30c9\u672c\u4f53\u306b\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8 \u30d7\u30ed\u30d1\u30c6\u30a3 age \u306e\u5024\u3092\u8fd4\u3059\u30b3\u30fc\u30c9\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u95a2\u6570\u3068\u30e1\u30bd\u30c3\u30c9\u306e\u4e3b\u306a\u9055\u3044\u306f\u3001\u547c\u3073\u51fa\u3057\u65b9\u6cd5\u3068\u30b9\u30b3\u30fc\u30d7\u306e\u8a2d\u5b9a\u65b9\u6cd5\u3067\u3059\u3002 \u95a2\u6570\u306f\u3069\u3053\u3067\u3082\u547c\u3073\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u3001\u30e1\u30bd\u30c3\u30c9\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4ecb\u3057\u3066\u547c\u3073\u51fa\u3059\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u95a2\u6570\u306f\u9759\u7684\u3067\u3042\u308a\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u306f\u306a\u304f\u30af\u30e9\u30b9\u306b\u5c5e\u3057\u307e\u3059\u304c\u3001\u30e1\u30bd\u30c3\u30c9\u306f\u52d5\u7684\u3067\u3042\u308a\u3001\u30af\u30e9\u30b9\u3067\u306f\u306a\u304f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u5c5e\u3057\u307e\u3059\u3002 \u95a2\u6570\u3068\u30e1\u30bd\u30c3\u30c9\u306e\u4e21\u65b9\u3092Java\u3067\u518d\u5229\u7528\u3067\u304d\u308b\u305f\u3081\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u8aad\u307f\u3084\u3059\u3055\u3068\u4fdd\u5b88\u6027\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/edu.ujhb.org\/?p=860\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>Java\u306e\u30af\u30e9\u30b9\u3068\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>Java \u3067\u306f\u3001\u30af\u30e9\u30b9\u3068\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0 (OOP) \u306e\u57fa\u672c\u6982\u5ff5\u3067\u3059\u3002 \u30af\u30e9\u30b9\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3059\u308b\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u307e\u305f\u306f\u8a2d\u8a08\u56f3\u3067\u3059\u3002 \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u3001\u72ec\u81ea\u306e\u72b6\u614b\u3068\u52d5\u4f5c\u3092\u6301\u3064\u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3067\u3059\u3002 \u6b21\u306b\u3001Java \u30af\u30e9\u30b9\u3068\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u8a73\u7d30\u306a\u8aac\u660e\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Java \u3067\u306f\u3001\u30af\u30e9\u30b9\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3068\u52d5\u4f5c\u3092\u8a18\u8ff0\u3059\u308b\u30ab\u30b9\u30bf\u30e0\u30c7\u30fc\u30bf\u578b\u3067\u3059\u3002 \u30af\u30e9\u30b9\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306e\u4e00\u7a2e\u306e\u9752\u5199\u771f\u3068\u8003\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u30af\u30e9\u30b9\u306b\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u7279\u6027\u3068\u52d5\u4f5c\u3092\u8a18\u8ff0\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3 (\u30e1\u30f3\u30d0\u30fc\u5909\u6570\u3068\u3082\u547c\u3070\u308c\u307e\u3059) \u3068\u30e1\u30bd\u30c3\u30c9 (\u30e1\u30f3\u30d0\u30fc\u95a2\u6570\u3068\u3082\u547c\u3070\u308c\u307e\u3059) \u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002 \u30af\u30e9\u30b9\u306e\u69cb\u6587\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">scssCopy code<code>[\u8bbf\u95ee\u4fee\u9970\u7b26] class \u7c7b\u540d {\n    \/\/ \u7c7b\u7684\u5c5e\u6027\uff08\u6210\u5458\u53d8\u91cf\uff09\n    [\u8bbf\u95ee\u4fee\u9970\u7b26] \u7c7b\u578b \u5c5e\u6027\u540d;\n    ...\n\n    \/\/ \u7c7b\u7684\u65b9\u6cd5\uff08\u6210\u5458\u51fd\u6570\uff09\n    [\u8bbf\u95ee\u4fee\u9970\u7b26] \u8fd4\u56de\u7c7b\u578b \u65b9\u6cd5\u540d(\u53c2\u6570\u5217\u8868) {\n        \/\/ \u65b9\u6cd5\u4f53\n    }\n    ...\n}\n<\/code><\/pre>\n\n\n\n<p>\u30a2\u30af\u30bb\u30b9\u4fee\u98fe\u5b50\u3092\u4f7f\u7528\u3057\u3066\u3001\u30af\u30e9\u30b9\u306e\u8868\u793a\u3068\u30a2\u30af\u30bb\u30b9\u6a29\u3092\u5236\u5fa1\u3057\u307e\u3059\u3002 \u30e1\u30f3\u30d0\u30fc\u5909\u6570\u3068\u30e1\u30f3\u30d0\u30fc\u95a2\u6570\u306f\u3001\u30af\u30e9\u30b9\u306e\u30e1\u30f3\u30d0\u30fc\u3067\u3059\u3002 \u30e1\u30f3\u30d0\u30fc\u5909\u6570\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u72b6\u614b\u3092\u8a18\u8ff0\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u3001\u30e1\u30f3\u30d0\u30fc\u95a2\u6570\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u52d5\u4f5c\u3092\u8a18\u8ff0\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002 \u30e1\u30f3\u30d0\u30fc\u5909\u6570\u3068\u30e1\u30f3\u30d0\u30fc\u95a2\u6570\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u306b\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u7c21\u5358\u306a\u30af\u30e9\u30b9\u5b9a\u7fa9\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">typescriptCopy code<code>public class Person {\n    \/\/ \u7c7b\u7684\u5c5e\u6027\uff08\u6210\u5458\u53d8\u91cf\uff09\n    private String name;\n    private int age;\n\n    \/\/ \u7c7b\u7684\u65b9\u6cd5\uff08\u6210\u5458\u51fd\u6570\uff09\n    public void setName(String name) {\n        this.name = name;\n    }\n\n    public void setAge(int age) {\n        this.age = age;\n    }\n\n    public String getName() {\n        return name;\n    }\n\n    public int getAge() {\n        return age;\n    }\n}\n<\/code><\/pre>\n\n\n\n<p>Person \u3068\u547c\u3070\u308c\u308b\u3053\u306e\u30af\u30e9\u30b9\u306b\u306f\u3001\u540d\u524d\u3068\u5e74\u9f62\u3068\u3044\u3046 2 \u3064\u306e\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8 \u30d7\u30ed\u30d1\u30c6\u30a3\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002 \u3053\u306e\u30af\u30e9\u30b9\u306b\u306f\u3001setName\u3001setAge\u3001getName\u3001\u304a\u3088\u3073 getAge \u306e 4 \u3064\u306e\u30e1\u30bd\u30c3\u30c9\u3082\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002 \u3053\u308c\u3089\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u5024\u3092\u53d6\u5f97\u304a\u3088\u3073\u8a2d\u5b9a\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>Java \u3067\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3067\u3059\u3002 \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u306f\u72ec\u81ea\u306e\u72b6\u614b\u3068\u52d5\u4f5c\u304c\u3042\u308a\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3059\u3053\u3068\u3067\u7279\u5b9a\u306e\u52d5\u4f5c\u3092\u5b9f\u884c\u3067\u304d\u307e\u3059\u3002 Java \u3067\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u30ad\u30fc\u30ef\u30fc\u30c9 new \u306b\u3088\u3063\u3066\u4f5c\u6210\u3055\u308c\u307e\u3059\u3002 \u4f8b\u3048\u3070\uff1a<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">javaCopy code<code>Person person = new Person();\n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u4e2a\u8bed\u53e5\u521b\u5efa\u4e86\u4e00\u4e2aPerson\u7c7b\u7684\u5bf9\u8c61\uff0c\u5e76\u5c06\u5176\u8d4b\u503c\u7ed9person\u53d8\u91cf\u3002\u53ef\u4ee5\u901a\u8fc7person\u5bf9\u8c61\u6765\u8bbf\u95eePerson\u7c7b\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528Person\u7c7b\u7684\u5bf9\u8c61\u7684\u793a\u4f8b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">scssCopy code<code>Person person = new Person();\nperson.setName(\"Tom\");\nperson.setAge(20);\nSystem.out.println(person.getName() + \" is \" + person.getAge() + \" years old.\");\n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u4e2a\u4ee3\u7801\u521b\u5efa\u4e86\u4e00\u4e2aPerson\u7c7b\u7684\u5bf9\u8c61\uff0c\u5e76\u8bbe\u7f6e\u4e86\u5bf9\u8c61\u7684name\u548cage\u5c5e\u6027\u3002\u7136\u540e\uff0c\u5b83\u8c03\u7528\u5bf9\u8c61\u7684getName\u548cgetAge\u65b9\u6cd5\uff0c\u5e76\u5c06\u7ed3\u679c\u8f93\u51fa\u5230\u63a7\u5236\u53f0\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/edu.ujhb.org\/?p=860\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91caJava\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\u7684\u5c01\u88c5<\/p>\n\n\n\n<p>\u5728Java\u4e2d\uff0c\u5c01\u88c5\u662f\u4e00\u79cd\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\uff08OOP\uff09\u7684\u91cd\u8981\u6982\u5ff5\uff0c\u7528\u4e8e\u9690\u85cf\u7c7b\u7684\u5b9e\u73b0\u7ec6\u8282\uff0c\u4f7f\u5176\u4e0d\u88ab\u5916\u90e8\u8bbf\u95ee\u548c\u4fee\u6539\u3002\u5c01\u88c5\u53ef\u4ee5\u4fdd\u62a4\u6570\u636e\u7684\u5b8c\u6574\u6027\u548c\u5b89\u5168\u6027\uff0c\u540c\u65f6\u63d0\u9ad8\u4e86\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002\u4ee5\u4e0b\u662fJava\u5c01\u88c5\u7684\u8be6\u7ec6\u89e3\u91ca\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u8bbf\u95ee\u4fee\u9970\u7b26 \u5728Java\u4e2d\uff0c\u8bbf\u95ee\u4fee\u9970\u7b26\u7528\u4e8e\u63a7\u5236\u7c7b\u3001\u5c5e\u6027\u548c\u65b9\u6cd5\u7684\u53ef\u89c1\u6027\u548c\u8bbf\u95ee\u6743\u9650\u3002Java\u4e2d\u6709\u56db\u79cd\u8bbf\u95ee\u4fee\u9970\u7b26\uff1a<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>public\uff1a\u516c\u5171\u7684\uff0c\u4efb\u4f55\u5730\u65b9\u90fd\u53ef\u4ee5\u8bbf\u95ee\u3002<\/li>\n\n\n\n<li>protected\uff1a\u53d7\u4fdd\u62a4\u7684\uff0c\u53ea\u6709\u540c\u4e00\u5305\u5185\u7684\u7c7b\u548c\u8be5\u7c7b\u7684\u5b50\u7c7b\u53ef\u4ee5\u8bbf\u95ee\u3002<\/li>\n\n\n\n<li>\u9ed8\u8ba4\uff08\u4e0d\u52a0\u4fee\u9970\u7b26\uff09\uff1a\u5305\u8bbf\u95ee\u6743\u9650\uff0c\u53ea\u6709\u540c\u4e00\u5305\u5185\u7684\u7c7b\u53ef\u4ee5\u8bbf\u95ee\u3002<\/li>\n\n\n\n<li>private\uff1a\u79c1\u6709\u7684\uff0c\u53ea\u6709\u8be5\u7c7b\u5185\u90e8\u53ef\u4ee5\u8bbf\u95ee\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u901a\u8fc7\u4f7f\u7528\u8bbf\u95ee\u4fee\u9970\u7b26\uff0c\u53ef\u4ee5\u9650\u5236\u5bf9\u7c7b\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\u7684\u8bbf\u95ee\u6743\u9650\uff0c\u4ece\u800c\u5b9e\u73b0\u6570\u636e\u7684\u5c01\u88c5\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>Java \u3067\u306f\u3001\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30a2\u30af\u30bb\u30b9\u4fee\u98fe\u5b50\u3068\u3057\u3066\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u30af\u30e9\u30b9\u306e\u5b9f\u88c5\u306e\u8a73\u7d30\u3092\u975e\u8868\u793a\u306b\u3057\u3066\u3001\u5916\u90e8\u304b\u3089\u30a2\u30af\u30bb\u30b9\u304a\u3088\u3073\u5909\u66f4\u3067\u304d\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u5024\u306f\u3001public \u306e Get \u30e1\u30bd\u30c3\u30c9\u3068 Set \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u30a2\u30af\u30bb\u30b9\u304a\u3088\u3073\u5909\u66f4\u3067\u304d\u307e\u3059\u3002 \u4f8b\u3048\u3070\uff1a<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">typescriptCopy code<code>public class Person {\n    private String name;\n    private int age;\n\n    public String getName() {\n        return name;\n    }\n\n    public void setName(String name) {\n        this.name = name;\n    }\n\n    public int getAge() {\n        return age;\n    }\n\n    public void setAge(int age) {\n        if (age &lt; 0) {\n            this.age = 0;\n        } else {\n            this.age = age;\n        }\n    }\n}\n<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u30b3\u30fc\u30c9\u306f\u3001Person \u30af\u30e9\u30b9\u3092\u4f5c\u6210\u3057\u3001name \u30d7\u30ed\u30d1\u30c6\u30a3\u3068 age \u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8 \u30a2\u30af\u30bb\u30b9\u4fee\u98fe\u5b50\u306b\u8a2d\u5b9a\u3057\u307e\u3059\u3002 \u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u5024\u306f getName \u30e1\u30bd\u30c3\u30c9\u3068 getAge \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u53d6\u5f97\u3067\u304d\u3001\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u5024\u306f setName \u30e1\u30bd\u30c3\u30c9\u3068 setAge \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u8a2d\u5b9a\u3067\u304d\u307e\u3059\u3002 setAge \u30e1\u30bd\u30c3\u30c9\u306f\u3001\u5e74\u9f62\u5c5e\u6027\u5024\u304c\u5e38\u306b 0 \u4ee5\u4e0a\u3067\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306b\u3001\u5e74\u9f62\u5024\u306e\u6709\u52b9\u6027\u306e\u30c1\u30a7\u30c3\u30af\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\">\n<li>\u30ab\u30d7\u30bb\u30eb\u5316\u30e1\u30bd\u30c3\u30c9 Java \u3067\u306f\u3001\u4fee\u98fe\u5b50\u3068\u30e1\u30bd\u30c3\u30c9\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3053\u3068\u3067\u30ab\u30d7\u30bb\u30eb\u5316\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002 \u305f\u3068\u3048\u3070\u3001\u30e1\u30bd\u30c3\u30c9\u3092\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8 \u30a2\u30af\u30bb\u30b9\u4fee\u98fe\u5b50\u306b\u8a2d\u5b9a\u3059\u308b\u3068\u3001\u30af\u30e9\u30b9\u5185\u3067\u975e\u8868\u793a\u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u3001\u30af\u30e9\u30b9\u5185\u3067\u306e\u307f\u30a2\u30af\u30bb\u30b9\u304a\u3088\u3073\u547c\u3073\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u3053\u308c\u306b\u3088\u308a\u3001\u5916\u90e8\u304b\u3089\u306e\u30e1\u30bd\u30c3\u30c9\u306e\u8aa4\u7528\u3084\u5909\u66f4\u304c\u56de\u907f\u3055\u308c\u3001\u30b3\u30fc\u30c9\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u6574\u5408\u6027\u304c\u4fdd\u8a3c\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">csharpCopy code<code>public class MathUtils {\n    private static int add(int a, int b) {\n        return a + b;\n    }\n\n    public static int addPositive(int a, int b) {\n        if (a &lt; 0) {\n            a = 0;\n        }\n        if (b &lt; 0) {\n            b = 0;\n        }\n        return add(a, b);\n    }\n}\n<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u30b3\u30fc\u30c9\u306f\u3001MathUtils \u30af\u30e9\u30b9\u3092\u4f5c\u6210\u3057\u3001add \u30e1\u30bd\u30c3\u30c9\u3092\u3001\u30af\u30e9\u30b9\u5185\u3067\u306e\u307f\u30a2\u30af\u30bb\u30b9\u304a\u3088\u3073\u547c\u3073\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u308b\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8 \u30a2\u30af\u30bb\u30b9\u4fee\u98fe\u5b50\u306b\u8a2d\u5b9a\u3057\u307e\u3059\u3002 \u6b21\u306b\u3001\u8ffd\u52a0\u3092\u4ecb\u3057\u3066<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/edu.ujhb.org\/?p=860\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>Java\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306b\u304a\u3051\u308b\u7d99\u627f\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>Java\u3067\u306f\u3001\u7d99\u627f\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0(OOP)\u306e\u91cd\u8981\u306a\u6982\u5ff5\u3067\u3042\u308a\u3001\u30b3\u30fc\u30c9\u3092\u518d\u5229\u7528\u304a\u3088\u3073\u62e1\u5f35\u3059\u308b\u305f\u3081\u306b\u65e2\u5b58\u306e\u30af\u30e9\u30b9\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3068\u30e1\u30bd\u30c3\u30c9\u3092\u7d99\u627f\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u65b0\u3057\u3044\u30af\u30e9\u30b9\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002 \u7d99\u627f\u306b\u3088\u308a\u3001\u30d7\u30ed\u30b0\u30e9\u30de\u306f\u30b3\u30fc\u30c9\u3092\u7e70\u308a\u8fd4\u3057\u8a18\u8ff0\u3059\u308b\u5fc5\u8981\u304c\u306a\u304f\u306a\u308a\u3001\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u3068\u4fdd\u5b88\u6027\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002 Java \u7d99\u627f\u306e\u8a73\u7d30\u306a\u8aac\u660e\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Java \u3067\u306f\u3001\u7d99\u627f\u306f extends \u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u4f7f\u7528\u3057\u3066\u5b9f\u88c5\u3055\u308c\u307e\u3059\u3002 \u7d99\u627f\u3055\u308c\u305f\u69cb\u6587\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">javascriptCopy code<code>class \u5b50\u7c7b\u540d extends \u7236\u7c7b\u540d {\n    \/\/ \u5b50\u7c7b\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\n}\n<\/code><\/pre>\n\n\n\n<p>\u3053\u3053\u3067\u3001\u5b50\u30af\u30e9\u30b9\u306f\u65b0\u3057\u304f\u4f5c\u6210\u3055\u308c\u305f\u30af\u30e9\u30b9\u3067\u3001\u89aa\u30af\u30e9\u30b9\u306f\u65e2\u5b58\u306e\u30af\u30e9\u30b9\u3067\u3059\u3002 \u5b50\u30af\u30e9\u30b9\u306f\u3001\u89aa\u30af\u30e9\u30b9\u306e\u3059\u3079\u3066\u306e\u975e\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8 \u30d7\u30ed\u30d1\u30c6\u30a3\u3068\u30e1\u30bd\u30c3\u30c9\u3092\u7d99\u627f\u3057\u307e\u3059\u3002 \u7d99\u627f\u306b\u3088\u308a\u3001\u5b50\u30af\u30e9\u30b9\u304c\u89aa\u30af\u30e9\u30b9\u306e\u30d1\u30d6\u30ea\u30c3\u30af \u30e1\u30bd\u30c3\u30c9\u3068\u30d1\u30d6\u30ea\u30c3\u30af \u30d7\u30ed\u30d1\u30c6\u30a3\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u3053\u3068\u3067\u3001\u30b3\u30fc\u30c9\u3092\u518d\u5229\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>\u7d99\u627f\u306b\u304a\u3051\u308b\u30e1\u30bd\u30c3\u30c9\u306e\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9 Java \u3067\u306f\u3001\u30b5\u30d6\u30af\u30e9\u30b9\u306f\u89aa\u30af\u30e9\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3057\u3066\u3001\u72ec\u81ea\u306e\u52d5\u4f5c\u3092\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002 \u3053\u306e\u52d5\u4f5c\u306f\u3001\u30e1\u30bd\u30c3\u30c9\u306e\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9 (\u307e\u305f\u306f\u30e1\u30bd\u30c3\u30c9\u306e\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9) \u3068\u547c\u3070\u308c\u307e\u3059\u3002 \u30b5\u30d6\u30af\u30e9\u30b9\u3067\u306f\u3001\u89aa\u30af\u30e9\u30b9\u3068\u540c\u3058\u540d\u524d\u3001\u540c\u3058\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc \u30ea\u30b9\u30c8\u3001\u304a\u3088\u3073\u540c\u3058\u623b\u308a\u5024\u306e\u578b\u3092\u6301\u3064\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3057\u3066\u3001\u89aa\u30af\u30e9\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3067\u304d\u307e\u3059\u3002 \u4f8b\u3048\u3070\uff1a<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">csharpCopy code<code>public class Animal {\n    public void move() {\n        System.out.println(\"\u52a8\u7269\u5728\u79fb\u52a8\");\n    }\n}\n\npublic class Dog extends Animal {\n    public void move() {\n        System.out.println(\"\u72d7\u5728\u8dd1\");\n    }\n}\n<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u30b3\u30fc\u30c9\u306f Animal \u30af\u30e9\u30b9\u3068 Dog \u30af\u30e9\u30b9\u3092\u4f5c\u6210\u3057\u3001Dog \u30af\u30e9\u30b9\u306f Animal \u30af\u30e9\u30b9\u3092\u7d99\u627f\u3057\u307e\u3059\u3002 Dog \u30af\u30e9\u30b9\u3067\u306f\u3001\u89aa\u30af\u30e9\u30b9\u306e move \u30e1\u30bd\u30c3\u30c9\u304c\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3055\u308c\u3001\u72ec\u81ea\u306e\u52d5\u4f5c\u304c\u5b9f\u88c5\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\">\n<li>Java \u3067\u306f\u3001super \u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u4f7f\u7528\u3057\u3066\u89aa\u30af\u30e9\u30b9\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3068\u30e1\u30bd\u30c3\u30c9\u3092\u53c2\u7167\u3067\u304d\u307e\u3059\u3002 super \u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u5b50\u30af\u30e9\u30b9\u306f\u89aa\u30af\u30e9\u30b9\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u30fc\u3092\u547c\u3073\u51fa\u3057\u3001\u89aa\u30af\u30e9\u30b9\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3001\u89aa\u30af\u30e9\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u4f8b\u3048\u3070\uff1a<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">csharpCopy code<code>public class Animal {\n    private String name;\n    private int age;\n\n    public Animal(String name, int age) {\n        this.name = name;\n        this.age = age;\n    }\n\n    public void showInfo() {\n        System.out.println(\"\u59d3\u540d\uff1a\" + name + \"\uff0c\u5e74\u9f84\uff1a\" + age);\n    }\n}\n\npublic class Dog extends Animal {\n    public Dog(String name, int age) {\n        super(name, age);\n    }\n\n    public void bark() {\n        System.out.println(\"\u6c6a\u6c6a\u6c6a\uff01\");\n    }\n}\n<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u30b3\u30fc\u30c9\u306f Animal \u30af\u30e9\u30b9\u3068 Dog \u30af\u30e9\u30b9\u3092\u4f5c\u6210\u3057\u3001Dog \u30af\u30e9\u30b9\u306f Animal \u30af\u30e9\u30b9\u3092\u7d99\u627f\u3057\u307e\u3059\u3002 Dog \u30af\u30e9\u30b9\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u30fc\u3067\u306f\u3001\u89aa\u30af\u30e9\u30b9\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u30fc\u304c super \u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u4ecb\u3057\u3066\u547c\u3073\u51fa\u3055\u308c\u3001\u89aa\u30af\u30e9\u30b9\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u304c\u521d\u671f\u5316\u3055\u308c\u307e\u3059\u3002 Dog \u30af\u30e9\u30b9\u3067\u3001\u89aa\u30af\u30e9\u30b9\u306e showInfo \u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3057\u3066\u3001\u89aa\u30af\u30e9\u30b9\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u5024\u3092\u8868\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u7d99\u627f\u306fJava\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306b\u304a\u3051\u308b\u91cd\u8981\u306a\u6982\u5ff5\u3067\u3042\u308a\u3001\u7d99\u627f\u3001\u30b3\u30fc\u30c9\u306e\u518d\u5229\u7528\u3001\u62e1\u5f35\u3092\u5b9f\u73fe\u3057\u3001\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u3068\u4fdd\u5b88\u6027\u3092\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/edu.ujhb.org\/?p=860\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>Java\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>Java\u3067\u306f\u3001\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0(OOP)\u306e\u91cd\u8981\u306a\u6982\u5ff5\u3067\u3042\u308a\u3001\u3055\u307e\u3056\u307e\u306a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u7f6e\u63db\u3068\u5171\u6709\u3092\u53ef\u80fd\u306b\u3057\u307e\u3059\u3002 \u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0\u306f\u3001\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u3068\u4fdd\u5b88\u6027\u3092\u5411\u4e0a\u3055\u305b\u306a\u304c\u3089\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u67d4\u8edf\u6027\u3068\u62e1\u5f35\u6027\u3092\u9ad8\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u6b21\u306b\u3001Java \u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0\u306e\u8a73\u7d30\u306a\u8aac\u660e\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0\u306e\u57fa\u672c\u6982\u5ff5 \u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0\u3068\u306f\u3001\u540c\u3058\u30e1\u30bd\u30c3\u30c9\u540d\u304c\u7570\u306a\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u7570\u306a\u308b\u5b9f\u88c5\u3092\u6301\u3064\u3053\u3068\u304c\u3067\u304d\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002 Java\u3067\u306f\u3001\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0\u306b\u306f\u3001\u30e1\u30bd\u30c3\u30c9\u306e\u30aa\u30fc\u30d0\u30fc\u30ed\u30fc\u30c9\u3068\u30e1\u30bd\u30c3\u30c9\u306e\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3068\u3044\u30462\u3064\u306e\u75c7\u72b6\u304c\u3042\u308a\u307e\u3059\u3002 \u30e1\u30bd\u30c3\u30c9\u306e\u30aa\u30fc\u30d0\u30fc\u30ed\u30fc\u30c9\u3068\u306f\u3001\u540c\u3058\u30af\u30e9\u30b9\u5185\u3067\u3001\u540d\u524d\u304c\u540c\u3058\u3067\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc \u30ea\u30b9\u30c8\u304c\u7570\u306a\u308b\u8907\u6570\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3067\u304d\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002 \u30e1\u30bd\u30c3\u30c9\u306e\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3068\u306f\u3001\u5b50\u30af\u30e9\u30b9\u306e\u89aa\u30af\u30e9\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3057\u3066\u3001\u72ec\u81ea\u306e\u52d5\u4f5c\u3092\u5b9f\u88c5\u3059\u308b\u3053\u3068\u3067\u3059\u3002<\/li>\n\n\n\n<li>Java \u3067\u306f\u3001\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0\u306b\u306f\u7d99\u627f\u3068\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u306e 2 \u3064\u306e\u5b9f\u88c5\u304c\u3042\u308a\u307e\u3059\u3002 \u7d99\u627f\u3068\u306f\u3001\u5b50\u30af\u30e9\u30b9\u304c\u89aa\u30af\u30e9\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3057\u3066\u72ec\u81ea\u306e\u52d5\u4f5c\u3092\u5b9f\u88c5\u3067\u304d\u308b\u305f\u3081\u3001\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0\u3092\u5b9f\u73fe\u3067\u304d\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002 \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3092\u5b9f\u88c5\u3059\u308b\u3053\u3068\u3067\u7570\u306a\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u9593\u3067\u7f6e\u304d\u63db\u3048\u3066\u5171\u6709\u3067\u304d\u308b\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u306e\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u3067\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u7d99\u627f\u3092\u4f7f\u7528\u3057\u3066\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0\u3092\u5b9f\u88c5\u3059\u308b\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">csharpCopy code<code>public class Animal {\n    public void move() {\n        System.out.println(\"\u52a8\u7269\u5728\u79fb\u52a8\");\n    }\n}\n\npublic class Dog extends Animal {\n    public void move() {\n        System.out.println(\"\u72d7\u5728\u8dd1\");\n    }\n}\n\npublic class Cat extends Animal {\n    public void move() {\n        System.out.println(\"\u732b\u5728\u8d70\");\n    }\n}\n\npublic class Test {\n    public static void main(String[] args) {\n        Animal animal1 = new Animal();\n        Animal animal2 = new Dog();\n        Animal animal3 = new Cat();\n\n        animal1.move();\n        animal2.move();\n        animal3.move();\n    }\n}\n<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u30b3\u30fc\u30c9\u306f\u3001Animal \u30af\u30e9\u30b9\u3001Dog \u30af\u30e9\u30b9\u3001\u304a\u3088\u3073 Cat \u30af\u30e9\u30b9\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002 Dog \u30af\u30e9\u30b9\u3068 Cat \u30af\u30e9\u30b9\u306f\u3069\u3061\u3089\u3082 Animal \u30af\u30e9\u30b9\u304b\u3089\u7d99\u627f\u3057\u3001Move \u30e1\u30bd\u30c3\u30c9\u3092\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3057\u307e\u3059\u3002 Test \u30af\u30e9\u30b9\u3067\u3001\u52d5\u7269\u3001\u72ac\u3001\u304a\u3088\u3073\u732b\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3057\u3001\u305d\u308c\u3089\u306e\u79fb\u52d5\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3057\u307e\u3059\u3002 animal2 \u3068 animal3 \u306f Animal \u578b\u3067\u3059\u304c\u3001\u305d\u308c\u305e\u308c Dog \u3068 Cat \u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u6307\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u79fb\u52d5\u30e1\u30bd\u30c3\u30c9\u304c\u547c\u3073\u51fa\u3055\u308c\u308b\u3068\u3001\u305d\u308c\u305e\u308c Dog \u30af\u30e9\u30b9\u3068 Cat \u30af\u30e9\u30b9\u306e\u79fb\u52d5\u30e1\u30bd\u30c3\u30c9\u304c\u547c\u3073\u51fa\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\">\n<li>\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0\u306e\u5229\u70b9 \u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0\u306f\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u67d4\u8edf\u6027\u3068\u62e1\u5f35\u6027\u3092\u9ad8\u3081\u3001\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u3068\u4fdd\u5b88\u6027\u3092\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30d7\u30ed\u30b0\u30e9\u30de\u306f\u65e2\u5b58\u306e\u30b3\u30fc\u30c9\u3092\u5909\u66f4\u3059\u308b\u3053\u3068\u306a\u304f\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u3055\u307e\u3056\u307e\u306a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u7f6e\u304d\u63db\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u3053\u308c\u306b\u3088\u308a\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u958b\u767a\u3068\u4fdd\u5b88\u304c\u7c21\u7d20\u5316\u3055\u308c\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u30b9\u30b1\u30fc\u30e9\u30d3\u30ea\u30c6\u30a3\u3068\u518d\u5229\u7528\u6027\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/edu.ujhb.org\/?p=860\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>Java\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u62bd\u8c61\u30af\u30e9\u30b9\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>Java \u3067\u306f\u3001\u62bd\u8c61\u30af\u30e9\u30b9\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0 (OOP) \u306e\u91cd\u8981\u306a\u6982\u5ff5\u3067\u3042\u308a\u3001\u985e\u4f3c\u3057\u305f\u7279\u6027\u3068\u52d5\u4f5c\u3092\u6301\u3064\u304c\u3001\u76f4\u63a5\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3067\u304d\u306a\u3044\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30af\u30e9\u30b9\u3092\u8868\u3057\u307e\u3059\u3002 \u62bd\u8c61\u30af\u30e9\u30b9\u306b\u306f\u3001\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u3068\u975e\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u3092\u542b\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u304c\u3001\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002 \u6b21\u306b\u3001Java \u62bd\u8c61\u30af\u30e9\u30b9\u306e\u8a73\u7d30\u306a\u8aac\u660e\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u62bd\u8c61\u30af\u30e9\u30b9\u306e\u57fa\u672c\u6982\u5ff5 \u62bd\u8c61\u30af\u30e9\u30b9\u306f\u3001\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3067\u304d\u306a\u3044\u7279\u5225\u306a\u30af\u30e9\u30b9\u3067\u3059\u3002 \u62bd\u8c61\u30af\u30e9\u30b9\u306b\u306f\u3001\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u3068\u975e\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u306e\u4e21\u65b9\u3092\u542b\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u5b9f\u88c5\u672c\u4f53\u3092\u6301\u305f\u305a\u3001\u30e1\u30bd\u30c3\u30c9\u306e\u5ba3\u8a00\u306e\u307f\u3092\u6301\u3064\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002 \u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u975e\u62bd\u8c61\u30b5\u30d6\u30af\u30e9\u30b9\u3067\u5b9f\u88c5\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u62bd\u8c61\u30af\u30e9\u30b9\u306e\u57fa\u672c\u69cb\u6587 Java \u3067\u306f\u3001abstract \u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u4f7f\u7528\u3057\u3066\u62bd\u8c61\u30af\u30e9\u30b9\u3068\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002 \u62bd\u8c61\u30af\u30e9\u30b9\u306e\u69cb\u6587\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">csharpCopy code<code>abstract class \u7c7b\u540d {\n    \/\/ \u62bd\u8c61\u7c7b\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\n    abstract \u8fd4\u56de\u7c7b\u578b \u65b9\u6cd5\u540d();\n}\n<\/code><\/pre>\n\n\n\n<p>\u3053\u3053\u3067\u3001\u30af\u30e9\u30b9\u540d\u306f\u62bd\u8c61\u30af\u30e9\u30b9\u306e\u540d\u524d\u3067\u3042\u308a\u3001\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u306f\u5b9f\u88c5\u672c\u4f53\u3092\u6301\u305f\u305a\u3001\u30e1\u30bd\u30c3\u30c9\u306e\u5ba3\u8a00\u306e\u307f\u3092\u6301\u3064\u30e1\u30bd\u30c3\u30c9\u3092\u53c2\u7167\u3057\u307e\u3059\u3002 \u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u306f\u30bb\u30df\u30b3\u30ed\u30f3\u3067\u7d42\u308f\u308b\u5fc5\u8981\u304c\u3042\u308a\u3001\u30e1\u30bd\u30c3\u30c9\u672c\u4f53\u3092\u542b\u3081\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002 \u62bd\u8c61\u30af\u30e9\u30b9\u306b\u306f\u3001\u975e\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u307e\u305f\u306f\u975e\u62bd\u8c61\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u542b\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\">\n<li>\u62bd\u8c61\u30af\u30e9\u30b9\u306e\u5f79\u5272 \u62bd\u8c61\u30af\u30e9\u30b9\u306f\u3001\u540c\u69d8\u306e\u7279\u6027\u3068\u52d5\u4f5c\u3092\u6301\u3064\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30af\u30e9\u30b9\u3092\u8868\u3059\u305f\u3081\u306b\u4f7f\u7528\u3067\u304d\u307e\u3059\u304c\u3001\u76f4\u63a5\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002 \u62bd\u8c61\u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3057\u3066\u6c4e\u7528\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3092\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u3001\u30b5\u30d6\u30af\u30e9\u30b9\u306f\u62bd\u8c61\u30af\u30e9\u30b9\u3092\u7d99\u627f\u3057\u3001\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u3092\u5b9f\u88c5\u3057\u3066\u72ec\u81ea\u306e\u52d5\u4f5c\u3092\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002 \u62bd\u8c61\u30af\u30e9\u30b9\u306fOOP\u3067\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u3001\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u3068\u4fdd\u5b88\u6027\u3092\u5411\u4e0a\u3055\u305b\u308b\u3068\u540c\u6642\u306b\u3001\u30d7\u30ed\u30b0\u30e9\u30de\u30fc\u304c\u30b3\u30fc\u30c9\u3092\u518d\u5229\u7528\u304a\u3088\u3073\u62e1\u5f35\u3059\u308b\u306e\u306b\u3082\u5f79\u7acb\u3061\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u62bd\u8c61\u30af\u30e9\u30b9\u306e\u4f7f\u7528\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">csharpCopy code<code>abstract class Shape {\n    protected int x, y;\n    public void move(int x, int y) {\n        this.x = x;\n        this.y = y;\n    }\n    public abstract void draw();\n}\n\nclass Circle extends Shape {\n    private int radius;\n    public Circle(int x, int y, int radius) {\n        this.x = x;\n        this.y = y;\n        this.radius = radius;\n    }\n    public void draw() {\n        System.out.println(\"\u753b\u4e00\u4e2a\u5706\uff0c\u534a\u5f84\u4e3a\uff1a\" + radius);\n    }\n}\n\npublic class Test {\n    public static void main(String[] args) {\n        Shape shape = new Circle(10, 10, 5);\n        shape.move(20, 20);\n        shape.draw();\n    }\n}\n<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u30b3\u30fc\u30c9\u306f\u3001\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u306e\u63cf\u753b\u3068\u975e\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u306e\u79fb\u52d5\u3092\u542b\u3080\u62bd\u8c61\u30af\u30e9\u30b9 Shape \u3092\u4f5c\u6210\u3057\u307e\u3059\u3002 Circle \u30af\u30e9\u30b9\u306f Shape \u30af\u30e9\u30b9\u3092\u7d99\u627f\u3057\u3001\u63cf\u753b\u30e1\u30bd\u30c3\u30c9\u3092\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3057\u307e\u3059\u3002 Test \u30af\u30e9\u30b9\u3067\u306f\u3001Circle \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u4f5c\u6210\u3055\u308c\u3001Shape \u578b\u306e\u5909\u6570\u306b\u5272\u308a\u5f53\u3066\u3089\u308c\u3001Move \u30e1\u30bd\u30c3\u30c9\u3068 Draw \u30e1\u30bd\u30c3\u30c9\u306b\u3088\u3063\u3066\u64cd\u4f5c\u3055\u308c\u307e\u3059\u3002 Shape \u30af\u30e9\u30b9\u306f\u62bd\u8c61\u30af\u30e9\u30b9\u3067\u3042\u308a\u3001\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3067\u304d\u306a\u3044\u305f\u3081\u3001\u30b5\u30d6\u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3057\u3066\u306e\u307f\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3067\u304d\u307e\u3059\u3002 \u3053\u306e\u3088\u3046\u306b\u3057\u3066\u3001\u62bd\u8c61\u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3057\u3066\u5b9f\u88c5\u3067\u304d\u307e\u3059<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/edu.ujhb.org\/?p=860\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>Java\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u6559\u3048\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>Java \u3067\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u306f\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u306e\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u3092\u5b9a\u7fa9\u3059\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0 (OOP) \u306e\u91cd\u8981\u306a\u6982\u5ff5\u3067\u3042\u308a\u3001\u305d\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3092\u5b9f\u88c5\u3059\u308b\u30af\u30e9\u30b9\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3067\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u3059\u3079\u3066\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u5b9f\u88c5\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3092\u4f7f\u7528\u3057\u3066\u3001\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0\u3068\u30b3\u30fc\u30c9\u306e\u518d\u5229\u7528\u3092\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002 \u6b21\u306b\u3001Java \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u306e\u8a73\u7d30\u306a\u8aac\u660e\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u306e\u57fa\u672c\u6982\u5ff5 \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u306f\u3001\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u306e\u5b9a\u7fa9\u306e\u307f\u3092\u542b\u3080\u62bd\u8c61\u578b\u3067\u3059\u3002 \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u306b\u306f\u5b9f\u88c5\u304c\u306a\u304f\u3001\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3067\u304d\u307e\u305b\u3093\u3002 Java \u3067\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u306f interface \u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u4f7f\u7528\u3057\u3066\u5b9a\u7fa9\u3055\u308c\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u306e\u69cb\u6587\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">csharpCopy code<code>interface \u63a5\u53e3\u540d {\n    \/\/ \u63a5\u53e3\u7684\u62bd\u8c61\u65b9\u6cd5\n}\n<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u3046\u3061\u3001\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u540d\u306f\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u306e\u540d\u524d\u3067\u3042\u308a\u3001\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u306f\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u5b9a\u7fa9\u306e\u30bb\u30c3\u30c8\u3092\u542b\u307f\u3001\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u540d\u3068\u30d1\u30e9\u30e1\u30fc\u30bf\u30ea\u30b9\u30c8\u306f\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u3092\u5177\u4f53\u7684\u306b\u5b9f\u88c5\u3059\u308b\u30af\u30e9\u30b9\u306b\u5b9f\u88c5\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>Java \u3067\u306f\u3001\u5b9f\u88c5\u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u4f7f\u7528\u3057\u3066\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3092\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002 \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3092\u5b9f\u88c5\u3059\u308b\u30af\u30e9\u30b9\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3067\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u3059\u3079\u3066\u306e\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u3092\u5b9f\u88c5\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3092\u5b9f\u88c5\u3059\u308b\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">csharpCopy code<code>interface Shape {\n    public void draw();\n}\n\nclass Circle implements Shape {\n    public void draw() {\n        System.out.println(\"\u753b\u4e00\u4e2a\u5706\");\n    }\n}\n\npublic class Test {\n    public static void main(String[] args) {\n        Shape shape = new Circle();\n        shape.draw();\n    }\n}\n<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u30b3\u30fc\u30c9\u306f\u3001\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u63cf\u753b\u3092\u542b\u3080\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9 Shape \u3092\u4f5c\u6210\u3057\u307e\u3059\u3002 Circle \u30af\u30e9\u30b9\u306f\u3001Shape \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3092\u5b9f\u88c5\u3057\u3001\u63cf\u753b\u30e1\u30bd\u30c3\u30c9\u3092\u5b9f\u88c5\u3057\u307e\u3059\u3002 Test \u30af\u30e9\u30b9\u3067\u306f\u3001Circle \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u4f5c\u6210\u3055\u308c\u3001Shape \u578b\u306e\u5909\u6570\u306b\u5272\u308a\u5f53\u3066\u3089\u308c\u3001draw \u30e1\u30bd\u30c3\u30c9\u306b\u3088\u3063\u3066\u64cd\u4f5c\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\">\n<li>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u306e\u5229\u70b9 \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u306f\u3001\u30d7\u30ed\u30b0\u30e9\u30de\u304c\u30b3\u30fc\u30c9\u3092\u518d\u5229\u7528\u304a\u3088\u3073\u62e1\u5f35\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002 \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30d7\u30ed\u30b0\u30e9\u30de\u306f\u6a19\u6e96\u306e\u30e1\u30bd\u30c3\u30c9 \u30bb\u30c3\u30c8\u3092\u5b9a\u7fa9\u3067\u304d\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3092\u5b9f\u88c5\u3059\u308b\u30af\u30e9\u30b9\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3067\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u3059\u3079\u3066\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u5b9f\u88c5\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u3053\u308c\u306b\u3088\u308a\u3001\u7570\u306a\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u7f6e\u63db\u3057\u3066\u76f8\u4e92\u306b\u5171\u6709\u3067\u304d\u307e\u3059\u3002 \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u306f\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30c3\u30af\u306b\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u67d4\u8edf\u6027\u3068\u62e1\u5f35\u6027\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u306fJava\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306b\u304a\u3051\u308b\u91cd\u8981\u306a\u6982\u5ff5\u3067\u3042\u308a\u3001\u30b3\u30fc\u30c9\u306e\u518d\u5229\u7528\u3068\u62e1\u5f35\u3001\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u3068\u4fdd\u5b88\u6027\u306e\u5411\u4e0a\u3001\u304a\u3088\u3073\u30d7\u30ed\u30b0\u30e9\u30de\u306e\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0\u3068\u30b3\u30fc\u30c9\u306e\u518d\u5229\u7528\u306e\u5b9f\u73fe\u306b\u3082\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/edu.ujhb.org\/?p=860\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>Java\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u5185\u90e8\u30af\u30e9\u30b9\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>Java \u3067\u306f\u3001\u5185\u90e8\u30af\u30e9\u30b9\u306f\u5225\u306e\u30af\u30e9\u30b9\u5185\u3067\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u30af\u30e9\u30b9\u3067\u3059\u3002 \u5185\u90e8\u30af\u30e9\u30b9\u306f\u3001\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8 \u30e1\u30f3\u30d0\u30fc\u3092\u542b\u3080\u3001\u5916\u90e8\u30af\u30e9\u30b9\u306e\u3059\u3079\u3066\u306e\u30e1\u30f3\u30d0\u30fc\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u307e\u3059\u3002 \u5185\u90e8\u30af\u30e9\u30b9\u306b\u306f\u3001\u30e1\u30f3\u30d0\u30fc\u5185\u90e8\u30af\u30e9\u30b9\u3001\u30ed\u30fc\u30ab\u30eb\u5185\u90e8\u30af\u30e9\u30b9\u3001\u533f\u540d\u5185\u90e8\u30af\u30e9\u30b9\u3001\u304a\u3088\u3073\u9759\u7684\u5185\u90e8\u30af\u30e9\u30b9\u306e 4 \u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u3002 Java\u306e\u5185\u90e8\u30af\u30e9\u30b9\u306e\u8a73\u7d30\u306a\u8aac\u660e\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30e1\u30f3\u30d0\u30fc\u5185\u90e8\u30af\u30e9\u30b9 \u30e1\u30f3\u30d0\u30fc\u5185\u90e8\u30af\u30e9\u30b9\u306f\u3001\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8 \u30e1\u30f3\u30d0\u30fc\u3092\u542b\u3080\u5916\u90e8\u30af\u30e9\u30b9\u306e\u3059\u3079\u3066\u306e\u30e1\u30f3\u30d0\u30fc\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u5225\u306e\u30af\u30e9\u30b9\u5185\u3067\u5b9a\u7fa9\u3055\u308c\u305f\u30af\u30e9\u30b9\u3067\u3059\u3002 \u30e1\u30f3\u30d0\u30fc\u5185\u90e8\u30af\u30e9\u30b9\u306f\u3001\u5916\u90e8\u30af\u30e9\u30b9\u306e\u30e1\u30f3\u30d0\u30fc\u5909\u6570\u3068\u30e1\u30bd\u30c3\u30c9\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u3001\u5916\u90e8\u30af\u30e9\u30b9\u306b\u3088\u3063\u3066\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3067\u304d\u3001\u5916\u90e8\u30af\u30e9\u30b9\u306e\u9759\u7684\u30e1\u30bd\u30c3\u30c9\u3068\u9759\u7684\u5909\u6570\u306b\u3088\u3063\u3066\u547c\u3073\u51fa\u3059\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002 \u30e1\u30f3\u30d0\u30fc\u5185\u90e8\u30af\u30e9\u30b9\u306e\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">csharpCopy code<code>public class OuterClass {\n    private int x = 10;\n    class InnerClass {\n        public void printX() {\n            System.out.println(x);\n        }\n    }\n}\n\npublic class Test {\n    public static void main(String[] args) {\n        OuterClass outer = new OuterClass();\n        OuterClass.InnerClass inner = outer.new InnerClass();\n        inner.printX();\n    }\n}\n<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u30b3\u30fc\u30c9\u306f\u3001\u5916\u90e8\u30af\u30e9\u30b9\u3068\u5185\u90e8\u30af\u30e9\u30b9\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002 \u30af\u30e9\u30b9\u306f\u3001\u5916\u5074\u306e\u30af\u30e9\u30b9 \u30af\u30e9\u30b9\u306e\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8 \u30e1\u30f3\u30d0\u30fc\u5909\u6570 x \u306b\u30a2\u30af\u30bb\u30b9\u3057\u3001new \u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u4f7f\u7528\u3057\u3066 InnerClass \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3057\u3001printX \u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3057\u3066\u5916\u5074\u306e\u30af\u30e9\u30b9\u306e\u5909\u6570 x \u306e\u5024\u3092\u51fa\u529b\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>\u30ed\u30fc\u30ab\u30eb\u5185\u90e8\u30af\u30e9\u30b9 \u30ed\u30fc\u30ab\u30eb\u5185\u90e8\u30af\u30e9\u30b9\u306f\u3001\u30e1\u30bd\u30c3\u30c9\u5185\u3067\u5b9a\u7fa9\u3055\u308c\u3001\u30e1\u30bd\u30c3\u30c9\u5185\u3067\u306e\u307f\u4f7f\u7528\u3067\u304d\u308b\u30af\u30e9\u30b9\u3067\u3059\u3002 \u30ed\u30fc\u30ab\u30eb\u5185\u90e8\u30af\u30e9\u30b9\u306f\u30e1\u30bd\u30c3\u30c9\u5185\u306e\u5909\u6570\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u307e\u3059\u304c\u3001final\u3067\u3042\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u30ed\u30fc\u30ab\u30eb\u5185\u90e8\u30af\u30e9\u30b9\u306e\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">csharpCopy code<code>public class OuterClass {\n    public void print() {\n        final int x = 10;\n        class InnerClass {\n            public void printX() {\n                System.out.println(x);\n            }\n        }\n        InnerClass inner = new InnerClass();\n        inner.printX();\n    }\n}\n\npublic class Test {\n    public static void main(String[] args) {\n        OuterClass outer = new OuterClass();\n        outer.print();\n    }\n}\n<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u30b3\u30fc\u30c9\u306f\u3001\u5916\u90e8\u30af\u30e9\u30b9\u3068\u30ed\u30fc\u30ab\u30eb\u5185\u90e8\u30af\u30e9\u30b9 InnerClass \u3092\u4f5c\u6210\u3057\u307e\u3059\u3002 \u30af\u30e9\u30b9\u306f\u3001\u5916\u90e8\u30e1\u30bd\u30c3\u30c9 print \u306e\u6700\u5f8c\u306e\u5909\u6570 x \u306b\u30a2\u30af\u30bb\u30b9\u3057\u3001new \u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u4f7f\u7528\u3057\u3066 InnerClass \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3057\u3001printX \u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3057\u3066 x \u5909\u6570\u306e\u5024\u3092\u51fa\u529b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\">\n<li>\u533f\u540d\u5185\u90e8\u30af\u30e9\u30b9 \u533f\u540d\u5185\u90e8\u30af\u30e9\u30b9\u306f\u3001\u540d\u524d\u306e\u306a\u3044\u5185\u90e8\u30af\u30e9\u30b9\u3067\u3042\u308a\u3001\u901a\u5e38\u3001\u4e00\u5ea6\u3060\u3051\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u30af\u30e9\u30b9\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002 \u533f\u540d\u306e\u5185\u90e8\u30af\u30e9\u30b9\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3092\u76f4\u63a5\u5b9f\u88c5\u3059\u308b\u3053\u3068\u3082\u3001\u65b0\u3057\u3044\u30af\u30e9\u30b9\u3092\u660e\u793a\u7684\u306b\u5b9a\u7fa9\u305b\u305a\u306b\u89aa\u30af\u30e9\u30b9\u304b\u3089\u7d99\u627f\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002 \u533f\u540d\u5185\u90e8\u30af\u30e9\u30b9\u306e\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">csharpCopy code<code>interface Shape {\n    public void draw();\n}\n\npublic class Test {\n    public static void main(String[] args) {\n        Shape shape = new Shape() {\n            public void draw() {\n                System.out.println(\"\u753b\u4e00\u4e2a\u5706\");\n            }\n        };\n        shape.draw();\n    }\n}\n<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u30b3\u30fc\u30c9\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9 Shape \u3068\u533f\u540d\u5185\u90e8\u30af\u30e9\u30b9\u3092\u4f5c\u6210\u3057\u3001Shape \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3092\u76f4\u63a5\u5b9f\u88c5\u3057\u3066\u3001draw \u30e1\u30bd\u30c3\u30c9\u3092\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3057\u307e\u3059\u3002 Test \u30af\u30e9\u30b9\u3067\u3001AND \u3092\u4f5c\u6210\u3057\u3066 Shape \u578b\u306e\u5909\u6570\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/edu.ujhb.org\/?p=860\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>Java\u5171\u901a\u30af\u30e9\u30b9\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u6587\u5b57\u5217\u3092\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>Java\u3067\u306f\u3001\u6587\u5b57\u5217\u306f\u30c6\u30ad\u30b9\u30c8\u30c7\u30fc\u30bf\u306e\u4fdd\u5b58\u3068\u64cd\u4f5c\u306b\u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u308b\u30c7\u30fc\u30bf\u578b\u3067\u3059\u3002 Java\u306f\u3001\u6587\u5b57\u5217\u64cd\u4f5c\u3092\u5b9f\u88c5\u3059\u308b\u305f\u3081\u306e\u6587\u5b57\u5217\u30af\u30e9\u30b9(\u6587\u5b57\u5217\u30af\u30e9\u30b9\u3068\u6587\u5b57\u5217\u30d3\u30eb\u30c0\u30fc\u30af\u30e9\u30b9)\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002 \u6b21\u306b\u3001\u4e00\u822c\u7684\u306aJava\u30af\u30e9\u30b9\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u6587\u5b57\u5217\u306e\u8a73\u7d30\u306a\u8aac\u660e\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u6587\u5b57\u5217\u30af\u30e9\u30b9 String \u30af\u30e9\u30b9\u306f\u3001\u6587\u5b57\u5217\u3092\u8868\u3059\u305f\u3081\u306b Java \u3067\u4f7f\u7528\u3055\u308c\u308b\u30af\u30e9\u30b9\u3067\u3001\u8c4a\u5bcc\u306a\u6587\u5b57\u5217\u64cd\u4f5c\u30e1\u30bd\u30c3\u30c9\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002 String \u30af\u30e9\u30b9\u306f\u4e0d\u5909\u3067\u3042\u308a\u3001String \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u4f5c\u6210\u3055\u308c\u308b\u3068\u3001\u305d\u306e\u5024\u3092\u5909\u66f4\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002 String \u30af\u30e9\u30b9\u306e\u4e00\u822c\u7684\u306a\u30e1\u30bd\u30c3\u30c9\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>length(): \u6587\u5b57\u5217\u306e\u9577\u3055\u3092\u8fd4\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>charAt(int \u30a4\u30f3\u30c7\u30c3\u30af\u30b9): \u6307\u5b9a\u3055\u308c\u305f\u4f4d\u7f6e\u306b\u3042\u308b\u6587\u5b57\u3092\u8fd4\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>equals(\u6587\u5b57\u5217 str): 2 \u3064\u306e\u6587\u5b57\u5217\u304c\u7b49\u3057\u3044\u304b\u3069\u3046\u304b\u3092\u6bd4\u8f03\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>toLowerCase(): \u6587\u5b57\u5217\u3092\u5c0f\u6587\u5b57\u306b\u5909\u63db\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>toUpperCase(): \u6587\u5b57\u5217\u3092\u5927\u6587\u5b57\u306b\u5909\u63db\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>trim(): \u6587\u5b57\u5217\u306e\u4e21\u7aef\u304b\u3089\u30b9\u30da\u30fc\u30b9\u3092\u524a\u9664\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>substring(int beginIndex, int endIndex): beginIndex \u304b\u3089 endIndex-1 \u306e\u4f4d\u7f6e\u307e\u3067\u306e\u90e8\u5206\u6587\u5b57\u5217\u3092\u8fd4\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<p>String \u30af\u30e9\u30b9\u306e\u4f7f\u7528\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">csharpCopy code<code>public class Test {\n    public static void main(String[] args) {\n        String str1 = \"Hello World\";\n        System.out.println(str1.length()); \/\/ \u8f93\u51fa\uff1a11\n        System.out.println(str1.charAt(1)); \/\/ \u8f93\u51fa\uff1ae\n        System.out.println(str1.equals(\"hello world\")); \/\/ \u8f93\u51fa\uff1afalse\n        System.out.println(str1.toLowerCase()); \/\/ \u8f93\u51fa\uff1ahello world\n        System.out.println(str1.toUpperCase()); \/\/ \u8f93\u51fa\uff1aHELLO WORLD\n        System.out.println(str1.trim()); \/\/ \u8f93\u51fa\uff1aHello World\n        System.out.println(str1.substring(1, 5)); \/\/ \u8f93\u51fa\uff1aello\n    }\n}\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>StringBuilder \u30af\u30e9\u30b9\u306f\u3001\u6587\u5b57\u5217\u306e\u5024\u3092\u52d5\u7684\u306b\u5909\u66f4\u3067\u304d\u308b\u5909\u6570\u6587\u5b57\u5217\u3092\u8868\u3059\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b Java \u306e\u30af\u30e9\u30b9\u3067\u3059\u3002 \u30af\u30e9\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u306f String \u30af\u30e9\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u3068\u4f3c\u3066\u3044\u307e\u3059\u304c\u3001\u30af\u30e9\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u306f\u5909\u66f4\u53ef\u80fd\u3067\u3059\u3002 \u30af\u30e9\u30b9\u306e\u4e00\u822c\u7684\u306a\u30e1\u30bd\u30c3\u30c9\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>append(\u6587\u5b57\u5217 str): \u6587\u5b57\u5217\u306e\u672b\u5c3e\u306b\u6587\u5b57\u5217\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>insert(int offset, String str): \u6307\u5b9a\u3057\u305f\u4f4d\u7f6e\u306b\u6587\u5b57\u5217\u3092\u633f\u5165\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>delete(int start, int end): \u6307\u5b9a\u3057\u305f\u4f4d\u7f6e\u306b\u3042\u308b\u6587\u5b57\u3092\u524a\u9664\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>reverse(): \u6587\u5b57\u5217\u3092\u53cd\u8ee2\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u30af\u30e9\u30b9\u306e\u4f7f\u7528\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">csharpCopy code<code>public class Test {\n    public static void main(String[] args) {\n        StringBuilder str2 = new StringBuilder(\"Hello World\");\n        str2.append(\", Java\");\n        System.out.println(str2); \/\/ \u8f93\u51fa\uff1aHello World, Java\n        str2.insert(5, \"Nice \");\n        System.out.println(str2); \/\/ \u8f93\u51fa\uff1aHello Nice World, Java\n        str2.delete(5, 10);\n        System.out.println(str2); \/\/ \u8f93\u51fa\uff1aHello World, Java\n        str2.reverse();\n        System.out.println(str2); \/\/ \u8f93\u51fa\uff1aavaJ ,dlroW olleH\n    }\n}\n<\/code><\/pre>\n\n\n\n<p>Java\u306e\u6587\u5b57\u5217\u30af\u30e9\u30b9\u30e9\u30a4\u30d6\u30e9\u30ea\u306b\u306f\u3001\u30d7\u30ed\u30b0\u30e9\u30de\u30fc\u304c\u3055\u307e\u3056\u307e\u306a\u6587\u5b57\u5217\u64cd\u4f5c\u3092\u5b9f\u88c5\u3059\u308b\u306e\u306b\u5f79\u7acb\u3064\u8c4a\u5bcc\u306a\u6587\u5b57\u5217\u64cd\u4f5c\u30e1\u30bd\u30c3\u30c9\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u3002 \u5b9f\u969b\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3067\u306f\u3001\u7279\u5b9a\u306e\u30cb\u30fc\u30ba\u3068\u30b7\u30ca\u30ea\u30aa\u306b\u5fdc\u3058\u3066\u3001\u9069\u5207\u306a\u6587\u5b57\u5217\u30af\u30e9\u30b9 \u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u9078\u629e\u3057\u3066\u6587\u5b57\u5217\u64cd\u4f5c\u3092\u5b9f\u88c5\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/edu.ujhb.org\/?p=860\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u5171\u901aJava\u30af\u30e9\u30b9\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u65e5\u6642\u3092\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>Java\u3067\u306f\u3001\u65e5\u4ed8\u3068\u6642\u523b\u306f\u3001\u6642\u9593\u95a2\u9023\u306e\u64cd\u4f5c\u3092\u51e6\u7406\u3059\u308b\u305f\u3081\u306b\u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u308b\u30c7\u30fc\u30bf\u578b\u306e1\u3064\u3067\u3059\u3002 Java \u306b\u306f\u3001\u65e5\u4ed8\u3068\u6642\u523b\u306e\u64cd\u4f5c\u3092\u5b9f\u88c5\u3059\u308b\u305f\u3081\u306e\u65e5\u4ed8\u3068\u6642\u523b\u306e\u30af\u30e9\u30b9\u30e9\u30a4\u30d6\u30e9\u30ea (java.time \u30d1\u30c3\u30b1\u30fc\u30b8) \u304c\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u3002 \u6b21\u306b\u3001\u5171\u901a Java \u30af\u30e9\u30b9\u30fb\u30e9\u30a4\u30d6\u30e9\u30ea\u30fc\u306e\u65e5\u6642\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>LocalDate \u30af\u30e9\u30b9\u306f\u65e5\u4ed8\u3092\u8868\u3059\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u3001\u6642\u523b\u3068\u30bf\u30a4\u30e0 \u30be\u30fc\u30f3\u306e\u60c5\u5831\u306f\u542b\u307e\u308c\u3066\u3044\u307e\u305b\u3093\u3002 LocalDate \u30af\u30e9\u30b9\u306b\u306f\u3001\u5e74\u3001\u6708\u3001\u65e5\u306a\u3069\u306e\u60c5\u5831\u306e\u53d6\u5f97\u30012 \u3064\u306e\u65e5\u4ed8\u9593\u306e\u65e5\u6570\u306e\u8a08\u7b97\u306a\u3069\u3001\u8c4a\u5bcc\u306a\u65e5\u4ed8\u64cd\u4f5c\u30e1\u30bd\u30c3\u30c9\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u3002 \u30af\u30e9\u30b9\u306e\u4e00\u822c\u7684\u306a\u30e1\u30bd\u30c3\u30c9\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>now(): \u73fe\u5728\u306e\u65e5\u4ed8\u3092\u8fd4\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>getYear(): \u5e74\u3092\u8fd4\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>getMonth(): \u6708\u3092\u8fd4\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>getDayOfMonth(): \u305d\u306e\u6708\u306e\u65e5\u6570\u3092\u8fd4\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>plusDays (\u9577\u3044\u65e5\u6570ToAdd): \u6307\u5b9a\u3057\u305f\u65e5\u6570\u3092\u73fe\u5728\u306e\u65e5\u4ed8\u306b\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30de\u30a4\u30ca\u30b9\u65e5\u6570 (\u9577\u3044\u65e5\u6570\u3092\u6e1b\u7b97): \u73fe\u5728\u306e\u65e5\u4ed8\u304b\u3089\u6307\u5b9a\u3057\u305f\u65e5\u6570\u3092\u6e1b\u7b97\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>isAfter(\u30ed\u30fc\u30ab\u30eb\u65e5\u4ed8\u305d\u306e\u4ed6): \u73fe\u5728\u306e\u65e5\u4ed8\u304c\u5225\u306e\u65e5\u4ed8\u3088\u308a\u5f8c\u3067\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>isBefore(\u30ed\u30fc\u30ab\u30eb\u65e5\u4ed8\u305d\u306e\u4ed6): \u73fe\u5728\u306e\u65e5\u4ed8\u304c\u5225\u306e\u65e5\u4ed8\u3088\u308a\u524d\u3067\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u30af\u30e9\u30b9\u306e\u4f7f\u7528\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">javaCopy code<code>import java.time.LocalDate;\nimport java.time.Month;\n\npublic class Test {\n    public static void main(String[] args) {\n        LocalDate date1 = LocalDate.now();\n        System.out.println(date1); \/\/ \u8f93\u51fa\u5f53\u524d\u65e5\u671f\uff0c\u4f8b\u5982\uff1a2023-04-11\n        LocalDate date2 = LocalDate.of(2022, Month.DECEMBER, 31);\n        System.out.println(date2); \/\/ \u8f93\u51fa\u6307\u5b9a\u65e5\u671f\uff0c\u4f8b\u5982\uff1a2022-12-31\n        System.out.println(date1.getYear()); \/\/ \u8f93\u51fa\u5e74\u4efd\uff0c\u4f8b\u5982\uff1a2023\n        System.out.println(date1.getMonth()); \/\/ \u8f93\u51fa\u6708\u4efd\uff0c\u4f8b\u5982\uff1aAPRIL\n        System.out.println(date1.getDayOfMonth()); \/\/ \u8f93\u51fa\u6708\u4e2d\u7684\u5929\u6570\uff0c\u4f8b\u5982\uff1a11\n        LocalDate date3 = date1.plusDays(7);\n        System.out.println(date3); \/\/ \u8f93\u51fa\u5f53\u524d\u65e5\u671f\u52a0\u4e0a7\u5929\u540e\u7684\u65e5\u671f\uff0c\u4f8b\u5982\uff1a2023-04-18\n        System.out.println(date3.isAfter(date2)); \/\/ \u8f93\u51fatrue\uff0c\u56e0\u4e3adate3\u5728date2\u4e4b\u540e\n        System.out.println(date2.isBefore(date1)); \/\/ \u8f93\u51fatrue\uff0c\u56e0\u4e3adate2\u5728date1\u4e4b\u524d\n    }\n}\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>LocalTime \u30af\u30e9\u30b9\u306f\u6642\u523b\u3092\u8868\u3059\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u3001\u65e5\u4ed8\u3068\u30bf\u30a4\u30e0 \u30be\u30fc\u30f3\u306e\u60c5\u5831\u306f\u542b\u307e\u308c\u3066\u3044\u307e\u305b\u3093\u3002 LocalTime \u30af\u30e9\u30b9\u306b\u306f\u3001\u6642\u9593\u3001\u5206\u3001\u79d2\u306a\u3069\u306e\u60c5\u5831\u3092\u53d6\u5f97\u3057\u305f\u308a\u30012 \u3064\u306e\u6642\u523b\u306e\u5dee\u3092\u8a08\u7b97\u3057\u305f\u308a\u3059\u308b\u306a\u3069\u3001\u8c4a\u5bcc\u306a\u6642\u9593\u64cd\u4f5c\u30e1\u30bd\u30c3\u30c9\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u3002 LocalTime \u30af\u30e9\u30b9\u306e\u4e00\u822c\u7684\u306a\u30e1\u30bd\u30c3\u30c9\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>now(): \u73fe\u5728\u306e\u6642\u523b\u3092\u8fd4\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>getHour(): \u6642\u9593\u6570\u3092\u8fd4\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>getMinute(): \u5206\u6570\u3092\u8fd4\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>getSecond(): \u79d2\u6570\u3092\u8fd4\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30d7\u30e9\u30b9\u6642\u9593(\u9577\u3044\u6642\u9593\u306b\u8ffd\u52a0):\u6307\u5b9a\u3057\u305f\u6642\u9593\u6570\u3092\u73fe\u5728\u306e\u6642\u523b\u306b\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30de\u30a4\u30ca\u30b9\u5206(\u9577\u3044\u5206)\u6e1b\u7b97):\u73fe\u5728\u306e\u6642\u523b\u304b\u3089\u6307\u5b9a\u3055\u308c\u305f\u5206\u6570\u3092\u6e1b\u7b97\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>isAfter (\u30ed\u30fc\u30ab\u30eb\u30bf\u30a4\u30e0\u305d\u306e\u4ed6): \u73fe\u5728\u306e\u6642\u523b\u304c\u5225\u306e\u6642\u523b\u306e\u5f8c\u3067\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>isBefore(LocalTime other): \u73fe\u5728\u306e\u6642\u523b\u304c\u5225\u306e\u6642\u523b\u3088\u308a\u9032\u3093\u3067\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u30af\u30e9\u30b9\u306e\u4f7f\u7528\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">javaCopy code<code>import java.time.LocalTime;\n\npublic class Test {\n    public static void main(String[] args) {\n        LocalTime time1 = LocalTime.now();\n        System.out.println(time1); \/\/ \u8f93\u51fa\u5f53\u524d\u65f6\u95f4\uff0c\u4f8b\u5982\uff1a11:21:31.234\n        System.out.println(time1.get\n<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/edu.ujhb.org\/?p=860\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>Java\u306e\u5171\u901a\u30af\u30e9\u30b9\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u30af\u30e9\u30b9\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>Java\u3067\u306f\u3001\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u30af\u30e9\u30b9\u306f\u3001\u95a2\u9023\u3059\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30bb\u30c3\u30c8\u3092\u683c\u7d0d\u3059\u308b\u30af\u30e9\u30b9\u306e\u30bb\u30c3\u30c8\u3067\u3059\u3002 Java \u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u30fb\u30af\u30e9\u30b9\u306f\u3001\u30c7\u30fc\u30bf\u3092\u52b9\u7387\u7684\u306b\u64cd\u4f5c\u3059\u308b\u305f\u3081\u306e\u8c4a\u5bcc\u306a\u30c7\u30fc\u30bf\u69cb\u9020\u3068\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002 \u4ee5\u4e0b\u306f\u3001Java\u306e\u5171\u901a\u30af\u30e9\u30b9\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u30af\u30e9\u30b9\u306e\u8a73\u7d30\u306a\u8aac\u660e\u3067\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>ArrayList\u30af\u30e9\u30b9\u306f\u3001\u914d\u5217\u8981\u7d20\u3092\u52d5\u7684\u306b\u8ffd\u52a0\u3001\u524a\u9664\u3001\u304a\u3088\u3073\u5909\u66f4\u3067\u304d\u308b\u53ef\u5909\u914d\u5217\u3092\u8868\u3059\u305f\u3081\u306bJava\u3067\u4f7f\u7528\u3055\u308c\u308b\u30af\u30e9\u30b9\u3067\u3059\u3002 ArrayList \u30af\u30e9\u30b9\u306f\u914d\u5217\u306b\u57fa\u3065\u3044\u3066\u5b9f\u88c5\u3055\u308c\u3001\u52d5\u7684\u306b\u62e1\u5f35\u3067\u304d\u307e\u3059\u3002 \u30af\u30e9\u30b9\u306e\u4e00\u822c\u7684\u306a\u30e1\u30bd\u30c3\u30c9\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>add(E): \u914d\u5217\u306e\u672b\u5c3e\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>get(int index): \u6307\u5b9a\u3055\u308c\u305f\u4f4d\u7f6e\u306b\u3042\u308b\u8981\u7d20\u3092\u8fd4\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>set(int index, E \u8981\u7d20): \u6307\u5b9a\u3057\u305f\u4f4d\u7f6e\u306b\u3042\u308b\u8981\u7d20\u3092\u5909\u66f4\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>remove(int index): \u6307\u5b9a\u3057\u305f\u4f4d\u7f6e\u306b\u3042\u308b\u8981\u7d20\u3092\u524a\u9664\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>size(): \u914d\u5217\u306e\u30b5\u30a4\u30ba\u3092\u8fd4\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u30af\u30e9\u30b9\u306e\u4f7f\u7528\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">csharpCopy code<code>import java.util.ArrayList;\n\npublic class Test {\n    public static void main(String[] args) {\n        ArrayList&lt;String&gt; list1 = new ArrayList&lt;String&gt;();\n        list1.add(\"Java\");\n        list1.add(\"Python\");\n        list1.add(\"C++\");\n        System.out.println(list1); \/\/ \u8f93\u51fa\uff1a[Java, Python, C++]\n        System.out.println(list1.get(1)); \/\/ \u8f93\u51fa\uff1aPython\n        list1.set(1, \"JavaScript\");\n        System.out.println(list1); \/\/ \u8f93\u51fa\uff1a[Java, JavaScript, C++]\n        list1.remove(2);\n        System.out.println(list1); \/\/ \u8f93\u51fa\uff1a[Java, JavaScript]\n        System.out.println(list1.size()); \/\/ \u8f93\u51fa\uff1a2\n    }\n}\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>HashMap \u30af\u30e9\u30b9\u306f\u3001\u52d5\u7684\u306b\u8ffd\u52a0\u3001\u524a\u9664\u3001\u304a\u3088\u3073\u5909\u66f4\u3067\u304d\u308b\u30ad\u30fc\u3068\u5024\u306e\u30da\u30a2\u306e\u30de\u30c3\u30d4\u30f3\u30b0\u3092\u8868\u3059\u305f\u3081\u306b Java \u3067\u4f7f\u7528\u3055\u308c\u308b\u30af\u30e9\u30b9\u3067\u3059\u3002 HashMap\u30af\u30e9\u30b9\u306f\u30cf\u30c3\u30b7\u30e5\u30c6\u30fc\u30d6\u30eb\u306b\u57fa\u3065\u3044\u3066\u5b9f\u88c5\u3055\u308c\u3066\u304a\u308a\u3001\u30cf\u30c3\u30b7\u30e5\u30c6\u30fc\u30d6\u30eb\u3092\u3059\u3070\u3084\u304f\u898b\u3064\u3051\u308b\u6a5f\u80fd\u304c\u3042\u308a\u307e\u3059\u3002 HashMap \u30af\u30e9\u30b9\u306e\u4e00\u822c\u7684\u306a\u30e1\u30bd\u30c3\u30c9\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>put(K \u30ad\u30fc\u3001V \u5024): \u30ad\u30fc\u3068\u5024\u306e\u30da\u30a2\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>get(\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u30ad\u30fc): \u6307\u5b9a\u3055\u308c\u305f\u30ad\u30fc\u306e\u5024\u3092\u8fd4\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u524a\u9664(\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u30ad\u30fc):\u6307\u5b9a\u3055\u308c\u305f\u30ad\u30fc\u306e\u5024\u3092\u524a\u9664\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u542b\u3080\u30ad\u30fc(\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u30ad\u30fc): \u6307\u5b9a\u3057\u305f\u30ad\u30fc\u3092\u542b\u3081\u308b\u304b\u3069\u3046\u304b\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>size(): \u30ad\u30fc\u3068\u5024\u306e\u30da\u30a2\u306e\u6570\u3092\u8fd4\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<p>HashMap \u30af\u30e9\u30b9\u306e\u4f7f\u7528\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">csharpCopy code<code>import java.util.HashMap;\n\npublic class Test {\n    public static void main(String[] args) {\n        HashMap&lt;String, Integer&gt; map1 = new HashMap&lt;String, Integer&gt;();\n        map1.put(\"Java\", 100);\n        map1.put(\"Python\", 90);\n        map1.put(\"C++\", 80);\n        System.out.println(map1); \/\/ \u8f93\u51fa\uff1a{Java=100, Python=90, C++=80}\n        System.out.println(map1.get(\"Java\")); \/\/ \u8f93\u51fa\uff1a100\n        map1.remove(\"C++\");\n        System.out.println(map1); \/\/ \u8f93\u51fa\uff1a{Java=100, Python=90}\n        System.out.println(map1.containsKey(\"Python\")); \/\/ \u8f93\u51fa\uff1atrue\n        System.out.println(map1.size()); \/\/ \u8f93\u51fa\uff1a2\n    }\n}\n<\/code><\/pre>\n\n\n\n<p>Java\u306e\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u30af\u30e9\u30b9\u30e9\u30a4\u30d6\u30e9\u30ea\u306f\u3001\u30d7\u30ed\u30b0\u30e9\u30de\u30fc\u304c\u30c7\u30fc\u30bf\u3092\u52b9\u7387\u7684\u306b\u64cd\u4f5c\u3059\u308b\u306e\u306b\u5f79\u7acb\u3064\u8c4a\u5bcc\u306a\u30c7\u30fc\u30bf\u69cb\u9020\u3068\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002 \u5b9f\u969b\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3067\u306f\u3001\u7279\u5b9a\u306e\u30cb\u30fc\u30ba\u3068\u30b7\u30ca\u30ea\u30aa\u306b\u5fdc\u3058\u3066\u3001\u30c7\u30fc\u30bf\u3092\u683c\u7d0d\u304a\u3088\u3073\u64cd\u4f5c\u3059\u308b\u305f\u3081\u306e\u9069\u5207\u306a\u30b3\u30ec\u30af\u30b7\u30e7\u30f3 \u30af\u30e9\u30b9\u3092\u9078\u629e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/edu.ujhb.org\/?p=860\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u4e00\u822c\u7684\u306aJava\u30af\u30e9\u30b9\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u30d5\u30a1\u30a4\u30ebIO\u64cd\u4f5c\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>Java \u3067\u306f\u3001\u30d5\u30a1\u30a4\u30eb IO \u64cd\u4f5c\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u53d6\u308a\u3068\u66f8\u304d\u8fbc\u307f\u306e\u4e00\u822c\u7684\u306a\u64cd\u4f5c\u306e 1 \u3064\u3067\u3059\u3002 Java \u306f\u3001\u30d5\u30a1\u30a4\u30eb IO \u64cd\u4f5c\u3092\u5b9f\u88c5\u3059\u308b\u305f\u3081\u306e\u30d5\u30a1\u30a4\u30eb IO \u30af\u30e9\u30b9\u30e9\u30a4\u30d6\u30e9\u30ea (java.io \u30d1\u30c3\u30b1\u30fc\u30b8\u3068 java.nio \u30d1\u30c3\u30b1\u30fc\u30b8) \u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002 \u6b21\u306b\u3001\u4e00\u822c\u7684\u306aJava\u30af\u30e9\u30b9\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u306e\u30d5\u30a1\u30a4\u30ebIO\u64cd\u4f5c\u306e\u8a73\u7d30\u306a\u8aac\u660e\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Java\u3067\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u53d6\u308b\u306b\u306f\u3001FileInputStream\u3001BufferedReader\u3001Scanner\u306a\u3069\u3092\u4f7f\u7528\u3059\u308b\u306a\u3069\u3001\u3055\u307e\u3056\u307e\u306a\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002 \u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3057\u3066\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u53d6\u308b\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">javaCopy code<code>import java.io.FileInputStream;\nimport java.io.IOException;\n\npublic class Test {\n    public static void main(String[] args) {\n        try {\n            FileInputStream fis = new FileInputStream(\"test.txt\");\n            int data;\n            while ((data = fis.read()) != -1) {\n                System.out.print((char) data);\n            }\n            fis.close();\n        } catch (IOException e) {\n            e.printStackTrace();\n        }\n    }\n}\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>\u307e\u305f\u3001Java\u3067\u30d5\u30a1\u30a4\u30eb\u3092\u66f8\u304d\u8fbc\u3080\u306b\u306f\u3001FileOutputStream\u3001BufferedWriter\u3001\u305d\u306e\u4ed6\u306e\u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3059\u308b\u306a\u3069\u3001\u3055\u307e\u3056\u307e\u306a\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002 \u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3057\u3066\u30d5\u30a1\u30a4\u30eb\u3092\u66f8\u304d\u8fbc\u3080\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">javaCopy code<code>import java.io.FileOutputStream;\nimport java.io.IOException;\n\npublic class Test {\n    public static void main(String[] args) {\n        try {\n            FileOutputStream fos = new FileOutputStream(\"test.txt\");\n            String str = \"Hello, Java!\";\n            byte[] bytes = str.getBytes();\n            fos.write(bytes);\n            fos.close();\n        } catch (IOException e) {\n            e.printStackTrace();\n        }\n    }\n}\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\">\n<li>Java \u3067\u5b9f\u88c5\u3055\u308c\u305f\u30d5\u30a1\u30a4\u30eb \u30b3\u30d4\u30fc\u64cd\u4f5c\u3067\u306f\u3001FileInputStream \u30af\u30e9\u30b9\u3068 FileOutputStream \u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3057\u3066\u3001\u30bd\u30fc\u30b9 \u30d5\u30a1\u30a4\u30eb\u306e\u30c7\u30fc\u30bf\u3092\u30d0\u30c3\u30d5\u30a1\u30fc\u306b\u8aad\u307f\u53d6\u308a\u3001\u30bf\u30fc\u30b2\u30c3\u30c8 \u30d5\u30a1\u30a4\u30eb\u306b\u66f8\u304d\u8fbc\u3080\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u30d5\u30a1\u30a4\u30eb \u30b3\u30d4\u30fc\u306e\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">javaCopy code<code>import java.io.FileInputStream;\nimport java.io.FileOutputStream;\nimport java.io.IOException;\n\npublic class Test {\n    public static void main(String[] args) {\n        try {\n            FileInputStream fis = new FileInputStream(\"source.txt\");\n            FileOutputStream fos = new FileOutputStream(\"target.txt\");\n            byte[] buffer = new byte[1024];\n            int len;\n            while ((len = fis.read(buffer)) != -1) {\n                fos.write(buffer, 0, len);\n            }\n            fis.close();\n            fos.close();\n        } catch (IOException e) {\n            e.printStackTrace();\n        }\n    }\n}\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"4\">\n<li>\u30d5\u30a1\u30a4\u30eb\u30d1\u30b9\u306e\u64cd\u4f5c File \u30af\u30e9\u30b9\u306f\u3001Java \u3067\u30d5\u30a1\u30a4\u30eb\u30d1\u30b9\u3092\u64cd\u4f5c\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002 File \u30af\u30e9\u30b9\u306e\u4e00\u822c\u7684\u306a\u30e1\u30bd\u30c3\u30c9\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>exists(): \u30d5\u30a1\u30a4\u30eb\u304c\u5b58\u5728\u3059\u308b\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>isDirectory(): \u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3067\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>isFile(): \u30d5\u30a1\u30a4\u30eb\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>mkdir(): \u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>createNewFile(): \u30d5\u30a1\u30a4\u30eb\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>delete(): \u30d5\u30a1\u30a4\u30eb\u307e\u305f\u306f\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u524a\u9664\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>list(): \u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u5185\u306e\u30d5\u30a1\u30a4\u30eb\u540d\u3092\u8fd4\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<p>File \u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3057\u3066\u30d5\u30a1\u30a4\u30eb \u30d1\u30b9\u3092\u64cd\u4f5c\u3059\u308b\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">csharpCopy code<code>import java.io.File;\n\npublic class Test {\n    public static void main(String[] args) {\n        File file1 = new File(\"test.txt\");\n        System.out.println(file1.exists()); \/\/ \u8f93\u51fa\uff1atrue\n        System.out.println(file1.isDirectory()); \/\/ \u8f93\u51fa\uff1afalse\n        System.out.println(file1.isFile()); \/\/ \u8f93\u51fa\uff1atrue\n        File file2 = new File(\"mydir\");\n        System.out.println(file2.exists()); \/\/ \u8f93\u51fa\uff1afalse\n        file2.mkdir();\n        System.out.println(file2.exists()); \/\/ \u8f93\u51fa\uff1atrue\n        File file3 = new File(\"mydir\/test.txt\");\n        try {\n            file3.createNewFile();\n            System.out.println(file3.exists()); \/\/ \u8f93\u51fa\uff1atrue\n        } catch (IOException e) {\n            e\n<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/edu.ujhb.org\/?p=860\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>Java\u5171\u901a\u30af\u30e9\u30b9\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u4f8b\u5916\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u6559\u3048\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>Java \u3067\u306f\u3001\u4f8b\u5916\u51e6\u7406\u306f\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u5b9f\u884c\u4e2d\u306b\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u4f8b\u5916\u72b6\u614b\u3092\u51e6\u7406\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u4e00\u822c\u7684\u306a\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u624b\u6cd5\u306e 1 \u3064\u3067\u3059\u3002 Java \u306b\u306f\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u767a\u751f\u3059\u308b\u4f8b\u5916\u3092\u51e6\u7406\u3059\u308b\u305f\u3081\u306e\u4f8b\u5916\u51e6\u7406\u30e1\u30ab\u30cb\u30ba\u30e0\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u3002 \u4ee5\u4e0b\u306f\u3001Java\u306e\u5171\u901a\u30af\u30e9\u30b9\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u306e\u4f8b\u5916\u51e6\u7406\u306e\u8a73\u7d30\u306a\u8aac\u660e\u3067\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u4f8b\u5916\u306e\u7a2e\u985e Java \u306e\u4f8b\u5916\u306f\u3001\u30c1\u30a7\u30c3\u30af\u4f8b\u5916\u3068\u672a\u30c1\u30a7\u30c3\u30af\u4f8b\u5916\u306e 2 \u3064\u306e\u30bf\u30a4\u30d7\u306b\u5206\u3051\u3089\u308c\u307e\u3059\u3002 \u30c1\u30a7\u30c3\u30af\u4f8b\u5916\u306f\u3001IOException\u3001ClassNotFoundException \u306a\u3069\u306e\u30b3\u30fc\u30c9\u3067\u30ad\u30e3\u30d7\u30c1\u30e3\u307e\u305f\u306f\u5ba3\u8a00\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u4e00\u65b9\u3001\u672a\u30c1\u30a7\u30c3\u30af\u306e\u4f8b\u5916\u3067\u306f\u3001NullPointerException\u3001ArrayIndexOutOfBoundsException \u306a\u3069\u306e\u660e\u793a\u7684\u306a\u30ad\u30e3\u30d7\u30c1\u30e3\u3084\u5ba3\u8a00\u306e\u30b9\u30ed\u30fc\u306f\u5fc5\u8981\u3042\u308a\u307e\u305b\u3093\u3002<\/li>\n\n\n\n<li>Java \u306e\u4f8b\u5916\u51e6\u7406\u30e1\u30ab\u30cb\u30ba\u30e0\u306b\u306f\u3001try-catch \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u30fb\u30d6\u30ed\u30c3\u30af\u3001finally \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u30fb\u30d6\u30ed\u30c3\u30af\u3001\u304a\u3088\u3073 throw \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u304c\u542b\u307e\u308c\u307e\u3059\u3002 \u6b21\u306b\u3001\u5404\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8 \u30d6\u30ed\u30c3\u30af\u306e\u8a73\u7d30\u306a\u8aac\u660e\u3092\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>try-catch \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8 \u30d6\u30ed\u30c3\u30af: \u4f8b\u5916\u3092\u30ad\u30e3\u30c3\u30c1\u3057\u3066\u51e6\u7406\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002 try \u30d6\u30ed\u30c3\u30af\u306b\u306f\u4f8b\u5916\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u306e\u3042\u308b\u30b3\u30fc\u30c9\u304c\u542b\u307e\u308c\u3066\u304a\u308a\u3001catch \u30d6\u30ed\u30c3\u30af\u306f\u4f8b\u5916\u6761\u4ef6\u3092\u51e6\u7406\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002 try \u30d6\u30ed\u30c3\u30af\u3067\u8907\u6570\u306e\u4f8b\u5916\u3092\u30ad\u30e3\u30c3\u30c1\u3057\u305f\u308a\u3001catch \u30d6\u30ed\u30c3\u30af\u5185\u306e\u4f8b\u5916\u306e\u7a2e\u985e\u306b\u5fdc\u3058\u3066\u7570\u306a\u308b\u51e6\u7406\u3092\u5b9f\u884c\u3057\u305f\u308a\u3067\u304d\u307e\u3059\u3002 try-catch \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8 \u30d6\u30ed\u30c3\u30af\u306e\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-preformatted\">phpCopy code<code>try {\n    \/\/ \u53ef\u80fd\u629b\u51fa\u5f02\u5e38\u7684\u4ee3\u7801\n} catch (ExceptionType1 e) {\n    \/\/ \u5904\u7406\u5f02\u5e38\u7c7b\u578b1\u7684\u60c5\u51b5\n} catch (ExceptionType2 e) {\n    \/\/ \u5904\u7406\u5f02\u5e38\u7c7b\u578b2\u7684\u60c5\u51b5\n} catch (Exception e) {\n    \/\/ \u5904\u7406\u5176\u4ed6\u5f02\u5e38\u7c7b\u578b\u7684\u60c5\u51b5\n}\n<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>finally \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8 \u30d6\u30ed\u30c3\u30af: try-catch \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8 \u30d6\u30ed\u30c3\u30af\u306e\u5b9f\u884c\u5f8c\u306b\u3001\u30d5\u30a1\u30a4\u30eb\u306e\u30af\u30ed\u30fc\u30ba\u3001\u30ea\u30bd\u30fc\u30b9\u306e\u89e3\u653e\u306a\u3069\u3001\u4e00\u90e8\u306e\u30af\u30ea\u30fc\u30f3\u30a2\u30c3\u30d7\u64cd\u4f5c\u3092\u5b9f\u884c\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002 finally \u30d6\u30ed\u30c3\u30af\u306f\u3001try-catch \u30d6\u30ed\u30c3\u30af\u3067\u4f8b\u5916\u304c\u767a\u751f\u3057\u305f\u304b\u3069\u3046\u304b\u306b\u95a2\u4fc2\u306a\u304f\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002 finally \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8 \u30d6\u30ed\u30c3\u30af\u306e\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-preformatted\">phpCopy code<code>try {\n    \/\/ \u53ef\u80fd\u629b\u51fa\u5f02\u5e38\u7684\u4ee3\u7801\n} catch (Exception e) {\n    \/\/ \u5904\u7406\u5f02\u5e38\u7684\u60c5\u51b5\n} finally {\n    \/\/ \u6e05\u7406\u64cd\u4f5c\n}\n<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>throw \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8: \u4f8b\u5916\u3092\u30b9\u30ed\u30fc\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002 \u30b3\u30fc\u30c9\u3067 throw \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u4f7f\u7528\u3057\u3066\u3001\u30ab\u30b9\u30bf\u30e0\u4f8b\u5916\u307e\u305f\u306f Java \u306e\u7d44\u307f\u8fbc\u307f\u4f8b\u5916\u30bf\u30a4\u30d7\u3092\u30b9\u30ed\u30fc\u3067\u304d\u307e\u3059\u3002 throw \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306e\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-preformatted\">arduinoCopy code<code>if (x &lt; 0) {\n    throw new IllegalArgumentException(\"x must be positive\");\n}\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\">\n<li>\u30ab\u30b9\u30bf\u30e0\u4f8b\u5916 \u30ab\u30b9\u30bf\u30e0\u4f8b\u5916\u306f\u3001\u7279\u5b9a\u306e\u4f8b\u5916\u6761\u4ef6\u3092\u8868\u3059\u305f\u3081\u306b Java \u3067\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002 \u30ab\u30b9\u30bf\u30e0\u4f8b\u5916\u306f\u3001Exception \u30af\u30e9\u30b9\u307e\u305f\u306f\u305d\u306e\u30b5\u30d6\u30af\u30e9\u30b9\u304b\u3089\u7d99\u627f\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u30ab\u30b9\u30bf\u30e0\u4f8b\u5916\u306e\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">javaCopy code<code>public class MyException extends Exception {\n    public MyException(String message) {\n        super(message);\n    }\n}\n<\/code><\/pre>\n\n\n\n<p>\u5b9f\u969b\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3067\u306f\u3001\u7279\u5b9a\u306e\u30cb\u30fc\u30ba\u3068\u30b7\u30ca\u30ea\u30aa\u306b\u5fdc\u3058\u3066\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u5b89\u5b9a\u6027\u3068\u4fe1\u983c\u6027\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u306b\u9069\u5207\u306a\u4f8b\u5916\u51e6\u7406\u65b9\u6cd5\u3092\u9078\u629e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/edu.ujhb.org\/?p=860\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u30b8\u30a7\u30cd\u30ea\u30c3\u30af\u306b\u3064\u3044\u3066\u306f\u3001Java\u306e\u9ad8\u5ea6\u306a\u6a5f\u80fd\u3067\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>Java \u306e\u30b8\u30a7\u30cd\u30ea\u30c3\u30af\u306f\u3001\u578b\u3092\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u5316\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u9ad8\u5ea6\u306a\u6a5f\u80fd\u3067\u3059\u3002 \u30b8\u30a7\u30cd\u30ea\u30c3\u30af\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30b3\u30fc\u30c9\u306e\u67d4\u8edf\u6027\u3068\u518d\u5229\u7528\u6027\u304c\u5411\u4e0a\u3057\u3001\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306b\u578b\u306e\u5b89\u5168\u6027\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3066\u578b\u5909\u63db\u30a8\u30e9\u30fc\u3092\u56de\u907f\u3067\u304d\u307e\u3059\u3002 \u4ee5\u4e0b\u306f\u3001Java\u306e\u9ad8\u5ea6\u306a\u6a5f\u80fd\u306e\u30b8\u30a7\u30cd\u30ea\u30c3\u30af\u306e\u8a73\u7d30\u306a\u8aac\u660e\u3067\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30b8\u30a7\u30cd\u30ea\u30c3\u30af \u30af\u30e9\u30b9 \u30b8\u30a7\u30cd\u30ea\u30c3\u30af \u30af\u30e9\u30b9\u306f\u3001\u30b8\u30a7\u30cd\u30ea\u30c3\u30af\u3092\u4f7f\u7528\u3059\u308b\u30af\u30e9\u30b9\u3067\u3042\u308a\u3001\u30af\u30e9\u30b9\u306e\u5b9a\u7fa9\u6642\u306b 1 \u3064\u4ee5\u4e0a\u306e\u578b\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u3092\u6307\u5b9a\u3067\u304d\u307e\u3059\u3002 \u30b8\u30a7\u30cd\u30ea\u30c3\u30af \u30af\u30e9\u30b9\u306e\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">arduinoCopy code<code>public class MyList&lt;E&gt; {\n    private E[] elements;\n\n    public MyList(int size) {\n        elements = (E[]) new Object[size];\n    }\n\n    public void add(E element) {\n        \/\/ \u6dfb\u52a0\u5143\u7d20\n    }\n\n    public E get(int index) {\n        \/\/ \u83b7\u53d6\u5143\u7d20\n    }\n}\n<\/code><\/pre>\n\n\n\n<p>\u30b8\u30a7\u30cd\u30ea\u30c3\u30af \u30af\u30e9\u30b9\u3092\u5b9a\u7fa9\u3059\u308b\u3068\u304d\u306f\u3001\u4efb\u610f\u306e\u8b58\u5225\u5b50\u3092\u4f7f\u7528\u3057\u3066\u578b\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u3092\u8868\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u305f\u3068\u3048\u3070\u3001E\u3001T\u3001K\u3001V \u306a\u3069\u3067\u3059\u3002 \u30b8\u30a7\u30cd\u30ea\u30c3\u30af \u30af\u30e9\u30b9\u306f\u3001\u6b21\u306e\u3088\u3046\u306b\u578b\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">vbnetCopy code<code>MyList&lt;String&gt; list = new MyList&lt;String&gt;(10);\nlist.add(\"Java\");\nString str = list.get(0);\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>\u30b8\u30a7\u30cd\u30ea\u30c3\u30af \u30e1\u30bd\u30c3\u30c9 \u30b8\u30a7\u30cd\u30ea\u30c3\u30af \u30e1\u30bd\u30c3\u30c9\u306f\u3001\u30b8\u30a7\u30cd\u30ea\u30c3\u30af\u3092\u4f7f\u7528\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u3067\u3042\u308a\u3001\u30e1\u30bd\u30c3\u30c9\u306e\u5b9a\u7fa9\u6642\u306b 1 \u3064\u4ee5\u4e0a\u306e\u578b\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u3092\u6307\u5b9a\u3067\u304d\u307e\u3059\u3002 \u30b8\u30a7\u30cd\u30ea\u30c3\u30af \u30e1\u30bd\u30c3\u30c9\u306e\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">csharpCopy code<code>public class Test {\n    public &lt;T&gt; void printArray(T[] array) {\n        for (T element : array) {\n            System.out.println(element);\n        }\n    }\n}\n<\/code><\/pre>\n\n\n\n<p>\u30b8\u30a7\u30cd\u30ea\u30c3\u30af \u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3059\u308b\u5834\u5408\u306f\u3001\u30e1\u30bd\u30c3\u30c9\u304c\u578b\u3092\u8fd4\u3059\u524d\u306b\u578b\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc (&lt;T&gt; \u306a\u3069) \u3092\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u30b8\u30a7\u30cd\u30ea\u30c3\u30af \u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3059\u3068\u304d\u306b\u3001\u578b\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u3092\u660e\u793a\u7684\u306b\u6307\u5b9a\u3059\u308b\u304b\u3001\u30b3\u30f3\u30d1\u30a4\u30e9\u306b\u578b\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u3092\u81ea\u52d5\u7684\u306b\u63a8\u8ad6\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">scssCopy code<code>Test t = new Test();\nInteger[] nums = {1, 2, 3};\nString[] strs = {\"Java\", \"Python\", \"C++\"};\nt.printArray(nums);\nt.printArray(strs);\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\">\n<li>\u30ef\u30a4\u30eb\u30c9\u30ab\u30fc\u30c9 \u30ef\u30a4\u30eb\u30c9\u30ab\u30fc\u30c9\u306f\u3001\u578b\u306e\u30b5\u30d6\u30af\u30e9\u30b9\u3092\u8868\u3059\u7279\u6b8a\u306a\u578b\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u3067\u3059\u3002 Java \u3067\u306f\u3001\u6b21\u306e 2 \u7a2e\u985e\u306e\u30ef\u30a4\u30eb\u30c9\u30ab\u30fc\u30c9\u304c\u3042\u308a\u307e\u3059\u3002 ? \u305d\u3057\u3066\u3002 T\u3092\u62e1\u5f35\u3057\u307e\u3059\u3002? \u4efb\u610f\u306e\u578b\u3092\u8868\u3057\u307e\u3059\u304b? \u62e1\u5f35 T \u306f\u578b T \u306e\u30b5\u30d6\u30af\u30e9\u30b9\u3092\u8868\u3057\u307e\u3059\u3002 \u30ef\u30a4\u30eb\u30c9\u30ab\u30fc\u30c9\u306e\u4f7f\u7528\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">typescriptCopy code<code>public class Test {\n    public void printList(List&lt;?&gt; list) {\n        for (Object element : list) {\n            System.out.println(element);\n        }\n    }\n\n    public void printList2(List&lt;? extends Number&gt; list) {\n        for (Number element : list) {\n            System.out.println(element);\n        }\n    }\n}\n<\/code><\/pre>\n\n\n\n<p>\u30ef\u30a4\u30eb\u30c9\u30ab\u30fc\u30c9\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u3001\u30e1\u30bd\u30c3\u30c9\u3067\u4efb\u610f\u306e\u578b\u306e\u30ea\u30b9\u30c8\u3092\u53d7\u3051\u5165\u308c\u308b\u3088\u3046\u306b\u3057\u305f\u308a\u3001\u30ea\u30b9\u30c8\u8981\u7d20\u306e\u578b\u304c\u7279\u5b9a\u306e\u578b\u306e\u30b5\u30d6\u30af\u30e9\u30b9\u3067\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3053\u3068\u3092\u5236\u9650\u3057\u305f\u308a\u3067\u304d\u307e\u3059\u3002 \u4f8b\u3048\u3070\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">scssCopy code<code>Test t = new Test();\nList&lt;String&gt; list1 = new ArrayList&lt;String&gt;();\nList&lt;Integer&gt; list2 = new ArrayList&lt;Integer&gt;();\nt.printList(list1);\nt.printList(list2);\nt.printList2(list2);\n<\/code><\/pre>\n\n\n\n<p>Java\u306e\u6c4e\u7528\u30e1\u30ab\u30cb\u30ba\u30e0\u306f\u3001\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306b\u30bf\u30a4\u30d7\u30bb\u30fc\u30d5\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3001\u578b\u5909\u63db\u30a8\u30e9\u30fc\u3092\u56de\u907f\u3057\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u5b89\u5b9a\u6027\u3068\u4fe1\u983c\u6027\u3092\u9ad8\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u5f37\u529b\u306a\u578b\u30c1\u30a7\u30c3\u30af\u30e1\u30ab\u30cb\u30ba\u30e0\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/edu.ujhb.org\/?p=860\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>Java\u306e\u9ad8\u5ea6\u306a\u6a5f\u80fd\u3067\u53cd\u6620\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>Java\u306e\u30ea\u30d5\u30ec\u30af\u30b7\u30e7\u30f3\u306f\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u5b9f\u884c\u4e2d\u306b\u30af\u30e9\u30b9\u306b\u95a2\u3059\u308b\u60c5\u5831\u306e\u53d6\u5f97\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u64cd\u4f5c\u3001\u30e1\u30bd\u30c3\u30c9\u306e\u547c\u3073\u51fa\u3057\u306a\u3069\u306b\u4f7f\u7528\u3055\u308c\u308b\u9ad8\u5ea6\u306a\u6a5f\u80fd\u3067\u3059\u3002 Java \u30ea\u30d5\u30ec\u30af\u30b7\u30e7\u30f3\u30fb\u30e1\u30ab\u30cb\u30ba\u30e0\u306f\u3001Java \u8a00\u8a9e\u306e\u52d5\u7684\u6027\u3068\u62e1\u5f35\u6027\u306e\u91cd\u8981\u306a\u5177\u4f53\u5316\u3067\u3059\u3002 \u4ee5\u4e0b\u306f\u3001Java\u306e\u9ad8\u5ea6\u306a\u6a5f\u80fd\u3067\u306e\u30ea\u30d5\u30ec\u30af\u30b7\u30e7\u30f3\u306e\u8a73\u7d30\u306a\u8aac\u660e\u3067\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30af\u30e9\u30b9\u306e\u60c5\u5831\u3092\u53d6\u5f97\u3059\u308bJava\u30ea\u30d5\u30ec\u30af\u30b7\u30e7\u30f3\u306f\u3001\u30af\u30e9\u30b9\u306e\u540d\u524d\u3001\u89aa\u30af\u30e9\u30b9\u3001\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u3001\u30d5\u30a3\u30fc\u30eb\u30c9\u3001\u30e1\u30bd\u30c3\u30c9\u306a\u3069\u306e\u30af\u30e9\u30b9\u306e\u60c5\u5831\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002 Class \u30af\u30e9\u30b9\u306e\u3055\u307e\u3056\u307e\u306a\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u3001\u30af\u30e9\u30b9\u306b\u95a2\u3059\u308b\u60c5\u5831\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002 \u30af\u30e9\u30b9\u60c5\u5831\u3092\u53d6\u5f97\u3059\u308b\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">lessCopy code<code>Class&lt;?&gt; cls = Test.class;\nSystem.out.println(\"Class name: \" + cls.getName());\nSystem.out.println(\"Superclass name: \" + cls.getSuperclass().getName());\nSystem.out.println(\"Interfaces: \");\nfor (Class&lt;?&gt; interfaceClass : cls.getInterfaces()) {\n    System.out.println(\"\\t\" + interfaceClass.getName());\n}\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>Java \u30ea\u30d5\u30ec\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001Class \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f7f\u7528\u3057\u3066\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u4f5c\u6210\u3067\u304d\u307e\u3059\u3002 newInstance() \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u3001\u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u4f5c\u6210\u3067\u304d\u307e\u3059\u3002 \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3059\u308b\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">vbnetCopy code<code>Class&lt;?&gt; cls = Test.class;\nObject obj = cls.newInstance();\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\">\n<li>\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u64cd\u4f5c Java\u30ea\u30d5\u30ec\u30af\u30b7\u30e7\u30f3\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u5024\u3092\u53d6\u5f97\u304a\u3088\u3073\u8a2d\u5b9a\u3067\u304d\u307e\u3059\u3002 getField()\u3001getDeclaredField()\u3001setField()\u3001setDeclaredField()\u3001setDeclaredField() \u306a\u3069\u3092\u4f7f\u7528\u3057\u3066\u3001\u30d5\u30a3\u30fc\u30eb\u30c9\u5024\u3092\u53d6\u5f97\u304a\u3088\u3073\u8a2d\u5b9a\u3067\u304d\u307e\u3059\u3002 \u30a2\u30af\u30b7\u30e7\u30f3 \u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">vbnetCopy code<code>Class&lt;?&gt; cls = Test.class;\nObject obj = cls.newInstance();\nField field = cls.getDeclaredField(\"name\");\nfield.setAccessible(true);\nfield.set(obj, \"Java\");\nString name = (String) field.get(obj);\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"4\">\n<li>\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3059 Java \u30ea\u30d5\u30ec\u30af\u30b7\u30e7\u30f3\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u30e1\u30bd\u30c3\u30c9\u306f\u3001getMethod()\u3001getDeclaredMethod()\u3001invoke() \u306a\u3069\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u547c\u3073\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u547c\u3073\u51fa\u3057\u30e1\u30bd\u30c3\u30c9\u306e\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">vbnetCopy code<code>Class&lt;?&gt; cls = Test.class;\nObject obj = cls.newInstance();\nMethod method = cls.getDeclaredMethod(\"sayHello\", String.class);\nmethod.setAccessible(true);\nString result = (String) method.invoke(obj, \"Java\");\nSystem.out.println(result);\n<\/code><\/pre>\n\n\n\n<p>Java\u306e\u30ea\u30d5\u30ec\u30af\u30b7\u30e7\u30f3\u30e1\u30ab\u30cb\u30ba\u30e0\u306f\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306b\u52d5\u7684\u3067\u62e1\u5f35\u6027\u3092\u63d0\u4f9b\u3057\u3001\u5b9f\u884c\u6642\u306b\u30af\u30e9\u30b9\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3001\u30e1\u30bd\u30c3\u30c9\u306a\u3069\u3092\u52d5\u7684\u306b\u30ed\u30fc\u30c9\u3057\u3066\u5b9f\u884c\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002 \u30ea\u30d5\u30ec\u30af\u30b7\u30e7\u30f3\u306e\u4f7f\u7528\u306b\u306f\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3042\u308a\u3001\u4e0d\u9069\u5207\u306a\u4f7f\u7528\u306f\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/edu.ujhb.org\/?p=860\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>Java\u306e\u9ad8\u5ea6\u306a\u6a5f\u80fd\u306e\u6ce8\u91c8\u3092\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>Java\u306e\u6ce8\u91c8\u306f\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u8981\u7d20\u306b\u30e1\u30bf\u30c7\u30fc\u30bf\u3068\u8aac\u660e\u60c5\u5831\u3092\u8ffd\u52a0\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u9ad8\u5ea6\u306a\u6a5f\u80fd\u3067\u3059\u3002 Java\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306f\u3001\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u3068\u5b9f\u884c\u6642\u306b\u51e6\u7406\u3067\u304d\u3001\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306e\u751f\u6210\u3001\u30b3\u30f3\u30d1\u30a4\u30eb\u30c1\u30a7\u30c3\u30af\u3001\u30e9\u30f3\u30bf\u30a4\u30e0\u51e6\u7406\u306a\u3069\u306b\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002 \u4ee5\u4e0b\u306f\u3001Java\u306e\u9ad8\u5ea6\u306a\u6a5f\u80fd\u306e\u6ce8\u91c8\u306e\u8a73\u7d30\u306a\u8aac\u660e\u3067\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u5b9a\u7fa9 Java \u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306f\u3001Java \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3068\u540c\u69d8\u306b\u3001@interface \u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u4f7f\u7528\u3057\u3066\u5b9a\u7fa9\u3055\u308c\u307e\u3059\u3002 \u6ce8\u91c8\u306e\u30e1\u30f3\u30d0\u30fc\u5909\u6570\u306f\u3001\u30e1\u30bd\u30c3\u30c9\u306e\u5f62\u5f0f\u3092\u4f7f\u7528\u3057\u3066\u5b9a\u7fa9\u3055\u308c\u307e\u3059\u3002 \u6ce8\u91c8\u306e\u5b9a\u7fa9\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">lessCopy code<code>@Target(ElementType.METHOD)\n@Retention(RetentionPolicy.RUNTIME)\npublic @interface MyAnnotation {\n    String name();\n    int age() default 0;\n}\n<\/code><\/pre>\n\n\n\n<p>\u6ce8\u91c8\u3092\u5b9a\u7fa9\u3059\u308b\u3068\u304d\u306f\u3001\u6ce8\u91c8\u306e\u4f7f\u7528\u7bc4\u56f2\u3068\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002 @Target\u6ce8\u91c8\u3068@Retention\u6ce8\u91c8\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002 \u6ce8\u91c8@Target\u3001\u30af\u30e9\u30b9\u3001\u30e1\u30bd\u30c3\u30c9\u3001\u30d5\u30a3\u30fc\u30eb\u30c9\u306a\u3069\u3001\u6ce8\u91c8\u306e\u4f7f\u7528\u7bc4\u56f2\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002 \u6ce8\u91c8@Retention\u3001\u30bd\u30fc\u30b9 \u30b3\u30fc\u30c9\u3001\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u3001\u5b9f\u884c\u6642\u9593\u306a\u3069\u3001\u6ce8\u91c8\u306e\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>Java\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306f\u3001\u30af\u30e9\u30b9\u3001\u30e1\u30bd\u30c3\u30c9\u3001\u30d5\u30a3\u30fc\u30eb\u30c9\u306a\u3069\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u8981\u7d20\u306b\u9069\u7528\u3067\u304d\u307e\u3059\u3002 @ \u8a18\u53f7\u3092\u4f7f\u7528\u3057\u3066\u6ce8\u91c8\u3092\u9069\u7528\u3067\u304d\u307e\u3059\u3002 \u6ce8\u91c8\u3092\u9069\u7528\u3059\u308b\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">kotlinCopy code<code>@MyAnnotation(name = \"Java\", age = 20)\npublic class Test {\n    @MyAnnotation(name = \"Java\", age = 20)\n    public void sayHello(String name) {\n        System.out.println(\"Hello \" + name);\n    }\n}\n<\/code><\/pre>\n\n\n\n<p>\u6ce8\u91c8\u3092\u9069\u7528\u3059\u308b\u3068\u304d\u306f\u3001\u6ce8\u91c8\u306e\u30e1\u30f3\u30d0\u30fc\u5909\u6570\u306e\u5024\u3092\u6307\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u7b49\u53f7\u3092\u4f7f\u7528\u3057\u3066\u30e1\u30f3\u30d0\u30fc\u5909\u6570\u306e\u5024\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3082\u3001\u65e2\u5b9a\u5024\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002 \u6ce8\u91c8\u306e\u30e1\u30f3\u30d0\u30fc\u5909\u6570\u306b\u306f\u3001\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u3001\u6587\u5b57\u5217\u578b\u3001\u5217\u6319\u578b\u3001\u6ce8\u91c8\u578b\u3001\u914d\u5217\u578b\u306a\u3069\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\">\n<li>\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u51e6\u7406 Java \u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306f\u3001\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u304a\u3088\u3073\u5b9f\u884c\u6642\u306b\u51e6\u7406\u3067\u304d\u307e\u3059\u3002 \u6ce8\u91c8\u306f\u3001Java \u30ea\u30d5\u30ec\u30af\u30b7\u30e7\u30f3 \u30e1\u30ab\u30cb\u30ba\u30e0\u3092\u4f7f\u7528\u3057\u3066\u51e6\u7406\u3067\u304d\u307e\u3059\u3002 \u6ce8\u91c8\u306e\u64cd\u4f5c\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">kotlinCopy code<code>Class&lt;?&gt; cls = Test.class;\nMyAnnotation annotation = cls.getAnnotation(MyAnnotation.class);\nif (annotation != null) {\n    String name = annotation.name();\n    int age = annotation.age();\n    System.out.println(\"Name: \" + name);\n    System.out.println(\"Age: \" + age);\n}\n<\/code><\/pre>\n\n\n\n<p>\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u6271\u3046\u3068\u304d\u306f\u3001\u30af\u30e9\u30b9\u30af\u30e9\u30b9\u306egetAnnotation()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u60c5\u5831\u3092\u53d6\u5f97\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u3053\u308c\u306f\u3001\u6ce8\u91c8\u306e\u30e1\u30f3\u30d0\u30fc\u5909\u6570\u306e\u5024\u306b\u57fa\u3065\u3044\u3066\u9069\u5207\u306b\u51e6\u7406\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>Java\u306e\u6ce8\u91c8\u30e1\u30ab\u30cb\u30ba\u30e0\u306f\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u8981\u7d20\u306b\u8aac\u660e\u60c5\u5831\u3092\u8ffd\u52a0\u3059\u308b\u305f\u3081\u306e\u4fbf\u5229\u306a\u65b9\u6cd5\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002 \u6ce8\u91c8\u306f\u614e\u91cd\u306b\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u3001\u4e0d\u9069\u5207\u306a\u4f7f\u7528\u306f\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u4fdd\u5b88\u6027\u3068\u8aad\u307f\u3084\u3059\u3055\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/edu.ujhb.org\/?p=860\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>Java\u306e\u9ad8\u5ea6\u306a\u6a5f\u80fd\u306e\u5217\u6319\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>Java \u306e\u5217\u6319\u578b\u306f\u3001\u6709\u9650\u6570\u306e\u5b9a\u6570\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u3092\u8868\u3059\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u9ad8\u5ea6\u306a\u6a5f\u80fd\u3067\u3059\u3002 \u5217\u6319\u578b\u306f\u3001\u72ec\u81ea\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3001\u30e1\u30bd\u30c3\u30c9\u3001\u304a\u3088\u3073\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3092\u6301\u3064\u3053\u3068\u304c\u3067\u304d\u308bJava\u306e\u7279\u5225\u306a\u30af\u30e9\u30b9\u3067\u3059\u3002 Java \u5217\u6319\u578b\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u8aad\u307f\u3084\u3059\u3055\u3068\u4fdd\u5b88\u6027\u3092\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u6b21\u306b\u3001Java \u62e1\u5f35\u6a5f\u80fd\u306e\u5217\u6319\u306e\u8a73\u7d30\u306a\u8aac\u660e\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Java \u5217\u6319\u306f enum \u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u4f7f\u7528\u3057\u3066\u5b9a\u7fa9\u3055\u308c\u3001\u5217\u6319\u5b9a\u6570\u306f\u5927\u6587\u5b57\u3067\u8868\u3055\u308c\u307e\u3059\u3002 \u5217\u6319\u4f53\u3092\u5b9a\u7fa9\u3059\u308b\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">arduinoCopy code<code>public enum Weekday {\n    MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY, SATURDAY, SUNDAY;\n}\n<\/code><\/pre>\n\n\n\n<p>\u5217\u6319\u4f53\u3092\u5b9a\u7fa9\u3059\u308b\u3068\u304d\u306b\u3001\u5217\u6319\u5b9a\u6570\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3001\u30e1\u30bd\u30c3\u30c9\u3001\u304a\u3088\u3073\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u30fc\u3092\u5b9a\u7fa9\u3067\u304d\u307e\u3059\u3002 \u4f8b\u3048\u3070\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">arduinoCopy code<code>public enum Weekday {\n    MONDAY(\"\u661f\u671f\u4e00\"), TUESDAY(\"\u661f\u671f\u4e8c\"), WEDNESDAY(\"\u661f\u671f\u4e09\"), THURSDAY(\"\u661f\u671f\u56db\"), FRIDAY(\"\u661f\u671f\u4e94\"), SATURDAY(\"\u661f\u671f\u516d\"), SUNDAY(\"\u661f\u671f\u65e5\");\n\n    private String name;\n\n    private Weekday(String name) {\n        this.name = name;\n    }\n\n    public String getName() {\n        return name;\n    }\n}\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>\u5217\u6319\u306e\u4f7f\u7528 Java \u5217\u6319\u306f\u3001\u4ed6\u306e\u30af\u30e9\u30b9\u3068\u540c\u3058\u3088\u3046\u306b\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002 \u5217\u6319\u5b9a\u6570\u3092\u4f7f\u7528\u3057\u3066\u5217\u6319\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u3082\u3001\u5217\u6319\u5b9a\u6570\u3092\u4f7f\u7528\u3057\u3066\u5217\u6319\u30e1\u30bd\u30c3\u30c9\u3068\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u547c\u3073\u51fa\u3059\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002 \u5217\u6319\u4f53\u306e\u4f7f\u7528\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">javaCopy code<code>Weekday day = Weekday.MONDAY;\nString name = day.getName();\nSystem.out.println(name);\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\">\n<li>\u5217\u6319\u5b9a\u6570 Java \u5217\u6319\u5b9a\u6570\u306b\u306f\u3001\u72ec\u81ea\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3068\u30e1\u30bd\u30c3\u30c9\u3092\u542b\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u5217\u6319\u5b9a\u6570\u306f\u3001\u5404\u5b9a\u6570\u306e\u52d5\u4f5c\u304c\u7570\u306a\u308b\u3088\u3046\u306b\u30e1\u30bd\u30c3\u30c9\u3092\u30aa\u30fc\u30d0\u30fc\u30ed\u30fc\u30c9\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002 \u5217\u6319\u5b9a\u6570\u306e\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">typescriptCopy code<code>public enum Weekday {\n    MONDAY(\"\u661f\u671f\u4e00\") {\n        @Override\n        public void sayHello() {\n            System.out.println(\"Hello, Monday\");\n        }\n    }, \n    TUESDAY(\"\u661f\u671f\u4e8c\") {\n        @Override\n        public void sayHello() {\n            System.out.println(\"Hello, Tuesday\");\n        }\n    }, \n    WEDNESDAY(\"\u661f\u671f\u4e09\") {\n        @Override\n        public void sayHello() {\n            System.out.println(\"Hello, Wednesday\");\n        }\n    }, \n    THURSDAY(\"\u661f\u671f\u56db\") {\n        @Override\n        public void sayHello() {\n            System.out.println(\"Hello, Thursday\");\n        }\n    }, \n    FRIDAY(\"\u661f\u671f\u4e94\") {\n        @Override\n        public void sayHello() {\n            System.out.println(\"Hello, Friday\");\n        }\n    }, \n    SATURDAY(\"\u661f\u671f\u516d\") {\n        @Override\n        public void sayHello() {\n            System.out.println(\"Hello, Saturday\");\n        }\n    }, \n    SUNDAY(\"\u661f\u671f\u65e5\") {\n        @Override\n        public void sayHello() {\n            System.out.println(\"Hello, Sunday\");\n        }\n    };\n\n    private String name;\n\n    private Weekday(String name) {\n        this.name = name;\n    }\n\n    public String getName() {\n        return name;\n    }\n\n    public abstract void sayHello();\n}\n<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/edu.ujhb.org\/?p=860\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>Java\u306e\u9ad8\u5ea6\u306a\u6a5f\u80fd\u3067\u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n\n\n\n<p>Java\u306e\u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u3001\u8907\u6570\u306e\u30b9\u30ec\u30c3\u30c9\u3092\u540c\u6642\u306b\u5b9f\u884c\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u9ad8\u5ea6\u306a\u6a5f\u80fd\u3067\u3042\u308a\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u4e26\u884c\u6027\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5411\u4e0a\u3055\u305b\u307e\u3059\u3002 Java \u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u30fb\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u3001Thread \u30af\u30e9\u30b9\u3092\u7d99\u627f\u3057\u305f\u308a\u3001Runnable \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3057\u305f\u308a\u3001\u30b9\u30ec\u30c3\u30c9\u30fb\u30d7\u30fc\u30eb\u3092\u4f7f\u7528\u3057\u305f\u308a\u3057\u3066\u3001\u30b9\u30ec\u30c3\u30c9\u3092\u4f5c\u6210\u3067\u304d\u307e\u3059\u3002 \u4ee5\u4e0b\u306f\u3001Java\u306e\u9ad8\u5ea6\u306a\u6a5f\u80fd\u306b\u304a\u3051\u308b\u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u8a73\u7d30\u306a\u8aac\u660e\u3067\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Java \u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u30fb\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u3001Thread \u30af\u30e9\u30b9\u3092\u7d99\u627f\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u30b9\u30ec\u30c3\u30c9\u3092\u4f5c\u6210\u3067\u304d\u307e\u3059\u3002 Thread \u30af\u30e9\u30b9\u3092\u7d99\u627f\u3057\u305f\u5f8c\u3001run() \u30e1\u30bd\u30c3\u30c9\u3092\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3057\u3066\u30b9\u30ec\u30c3\u30c9\u306e\u30ed\u30b8\u30c3\u30af\u3092\u5b9f\u88c5\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 Thread \u30af\u30e9\u30b9\u3092\u7d99\u627f\u3059\u308b\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">javaCopy code<code>public class MyThread extends Thread {\n    @Override\n    public void run() {\n        \/\/ \u7ebf\u7a0b\u903b\u8f91\n    }\n}\n\nMyThread thread = new MyThread();\nthread.start();\n<\/code><\/pre>\n\n\n\n<p>\u30b9\u30ec\u30c3\u30c9\u304c\u4f5c\u6210\u3055\u308c\u305f\u3089\u3001start() \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u30b9\u30ec\u30c3\u30c9\u3092\u958b\u59cb\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 start() \u30e1\u30bd\u30c3\u30c9\u306f\u3001run() \u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3057\u3066\u30b9\u30ec\u30c3\u30c9\u306e\u30ed\u30b8\u30c3\u30af\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>Java \u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u30fb\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u3001\u5b9f\u884c\u53ef\u80fd\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u30b9\u30ec\u30c3\u30c9\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002 Runnable \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3092\u5b9f\u88c5\u3057\u305f\u3089\u3001\u5b9f\u88c5\u30af\u30e9\u30b9\u3092 Thread \u30af\u30e9\u30b9\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u30fc\u306b\u6e21\u3057\u3066\u30b9\u30ec\u30c3\u30c9\u3092\u4f5c\u6210\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u5b9f\u884c\u53ef\u80fd\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3092\u5b9f\u88c5\u3059\u308b\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">javaCopy code<code>public class MyRunnable implements Runnable {\n    @Override\n    public void run() {\n        \/\/ \u7ebf\u7a0b\u903b\u8f91\n    }\n}\n\nMyRunnable runnable = new MyRunnable();\nThread thread = new Thread(runnable);\nthread.start();\n<\/code><\/pre>\n\n\n\n<p>\u30b9\u30ec\u30c3\u30c9\u3092\u4f5c\u6210\u3059\u308b\u3068\u304d\u306f\u3001Runnable \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3092\u5b9f\u88c5\u3059\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092 Thread \u30af\u30e9\u30b9\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u30fc\u306b\u6e21\u3059\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u30af\u30e9\u30b9\u306f\u8907\u6570\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3092\u5b9f\u88c5\u3067\u304d\u307e\u3059\u304c\u3001\u7d99\u627f\u3067\u304d\u308b\u306e\u306f 1 \u3064\u306e\u30af\u30e9\u30b9\u304b\u3089\u306e\u307f\u3067\u3042\u308b\u305f\u3081\u3001Runnable \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u306e\u5b9f\u88c5\u306f Thread \u30af\u30e9\u30b9\u3092\u7d99\u627f\u3059\u308b\u3088\u308a\u3082\u67d4\u8edf\u6027\u304c\u9ad8\u3044\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\">\n<li>\u30b9\u30ec\u30c3\u30c9\u30fb\u30d7\u30fc\u30eb Java \u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u30fb\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u3001\u30b9\u30ec\u30c3\u30c9\u30fb\u30d7\u30fc\u30eb\u3092\u4f7f\u7528\u3057\u3066\u30b9\u30ec\u30c3\u30c9\u3092\u7ba1\u7406\u304a\u3088\u3073\u591a\u91cd\u5316\u3067\u304d\u307e\u3059\u3002 \u30b9\u30ec\u30c3\u30c9 \u30d7\u30fc\u30eb\u306f\u3001\u30b9\u30ec\u30c3\u30c9\u306e\u4f5c\u6210\u3068\u7834\u68c4\u306b\u5fc5\u8981\u306a\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u3092\u524a\u6e1b\u3057\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u5fdc\u7b54\u6027\u3092\u5411\u4e0a\u3055\u305b\u307e\u3059\u3002 Java \u30b9\u30ec\u30c3\u30c9\u30fb\u30d7\u30fc\u30eb\u306f\u3001Executors \u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3057\u3066\u4f5c\u6210\u3067\u304d\u307e\u3059\u3002 \u30b9\u30ec\u30c3\u30c9 \u30d7\u30fc\u30eb\u306e\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">scssCopy code<code>ExecutorService executor = Executors.newFixedThreadPool(10);\nfor (int i = 0; i &lt; 100; i++) {\n    executor.execute(new MyRunnable());\n}\nexecutor.shutdown();\n<\/code><\/pre>\n\n\n\n<p>\u30b9\u30ec\u30c3\u30c9\u30d7\u30fc\u30eb\u3092\u4f5c\u6210\u3057\u305f\u3089\u3001execute() \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u30bf\u30b9\u30af\u3092\u9001\u4fe1\u3067\u304d\u307e\u3059\u3002 \u30bf\u30b9\u30af\u304c\u5b8c\u4e86\u3059\u308b\u3068\u3001\u30b9\u30ec\u30c3\u30c9 \u30d7\u30fc\u30eb\u306f\u30b9\u30ec\u30c3\u30c9\u3092\u518d\u5229\u7528\u3057\u307e\u3059\u3002 \u306a\u304a\u3001\u30b9\u30ec\u30c3\u30c9\u30d7\u30fc\u30eb\u3092\u5229\u7528\u3059\u308b\u969b\u306b\u306f\u3001\u30ea\u30bd\u30fc\u30b9\u306e\u6d6a\u8cbb\u3084\u30b9\u30ec\u30c3\u30c9\u306e\u30d6\u30ed\u30c3\u30ad\u30f3\u30b0\u3092\u907f\u3051\u308b\u305f\u3081\u306b\u3001\u5b9f\u969b\u306e\u72b6\u6cc1\u306b\u5fdc\u3058\u3066\u30b9\u30ec\u30c3\u30c9\u30d7\u30fc\u30eb\u306e\u7a2e\u985e\u3068\u30b5\u30a4\u30ba\u3092\u9078\u629e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>Java \u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u30fb\u30d7\u30ed\u30b0\u30e9\u30e0\u306b\u306f\u3001\u30b9\u30ec\u30c3\u30c9\u72b6\u614b\u3001\u540c\u671f\u3001\u30ed\u30c3\u30af\u3001\u30b9\u30ec\u30c3\u30c9\u9593\u901a\u4fe1\u306a\u3069\u306e\u77e5\u8b58\u3082\u542b\u307e\u308c\u307e\u3059\u3002 \u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u306f\u3001\u30b9\u30ec\u30c3\u30c9\u306e\u5b89\u5168\u6027\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u554f\u984c\u306b\u6ce8\u610f\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/edu.ujhb.org\/?p=860\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>Github\u306e\u512a\u308c\u305fJava\u30d9\u30fc\u30b9\u306e\u30b7\u30b9\u30c6\u30e0\u306f\u4f55\u3067\u3059\u304b<\/p>\n\n\n\n<p>Github\u306b\u306f\u591a\u304f\u306e\u512a\u308c\u305fJava\u30d9\u30fc\u30b9\u306e\u30b7\u30b9\u30c6\u30e0\u304c\u3042\u308a\u3001\u3088\u308a\u4eba\u6c17\u304c\u3042\u308a\u5e83\u304f\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u30b7\u30b9\u30c6\u30e0\u306e\u3044\u304f\u3064\u304b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Spring Framework:Spring\u306f\u3001\u30a8\u30f3\u30bf\u30fc\u30d7\u30e9\u30a4\u30baJava\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u3067\u5e83\u304f\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u4f9d\u5b58\u95a2\u4fc2\u6ce8\u5165\u3001AOP\u3001ORM\u3001\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u7ba1\u7406\u3001Web\u958b\u767a\u306a\u3069\u3001\u8c4a\u5bcc\u306a\u6a5f\u80fd\u3068\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u63d0\u4f9b\u3059\u308b\u30d5\u30eb\u30b9\u30bf\u30c3\u30afJava\u958b\u767a\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3067\u3059\u3002<\/li>\n\n\n\n<li>Apache Hadoop:Hadoop\u306f\u3001\u5927\u898f\u6a21\u306a\u30c7\u30fc\u30bf\u3092\u4fdd\u5b58\u304a\u3088\u3073\u51e6\u7406\u3059\u308b\u305f\u3081\u306e\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u306e\u5206\u6563\u30b3\u30f3\u30d4\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u3067\u3059\u3002 Hadoop \u306f Java \u8a00\u8a9e\u3067\u958b\u767a\u3055\u308c\u3066\u304a\u308a\u3001MapReduce \u30b3\u30f3\u30d4\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0 \u30e2\u30c7\u30eb\u3068\u5206\u6563\u30d5\u30a1\u30a4\u30eb \u30b7\u30b9\u30c6\u30e0 HDFS \u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\n\n\n\n<li>Elasticsearch:Elasticsearch\u306f\u3001\u5927\u898f\u6a21\u306a\u30c7\u30fc\u30bf\u3092\u4fdd\u5b58\u3001\u691c\u7d22\u3001\u5206\u6790\u3059\u308b\u305f\u3081\u306eLucene\u691c\u7d22\u30e9\u30a4\u30d6\u30e9\u30ea\u306b\u57fa\u3065\u304f\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u306e\u5168\u6587\u691c\u7d22\u30a8\u30f3\u30b8\u30f3\u3067\u3059\u3002 Elasticsearch\u306fJava\u3067\u8a18\u8ff0\u3055\u308c\u3066\u304a\u308a\u3001\u53ef\u7528\u6027\u304c\u9ad8\u304f\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u9ad8\u304f\u3001\u7c21\u5358\u306b\u62e1\u5f35\u3067\u304d\u307e\u3059\u3002<\/li>\n\n\n\n<li>Apache Cassandra: Cassandra \u306f\u3001\u5927\u898f\u6a21\u306a\u30c7\u30fc\u30bf\u3092\u683c\u7d0d\u3059\u308b\u305f\u3081\u306e\u5206\u6563\u578b NoSQL \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3067\u3059\u3002 Cassandra \u306f Java \u8a00\u8a9e\u306b\u57fa\u3065\u3044\u3066\u304a\u308a\u3001\u53ef\u7528\u6027\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3001\u62e1\u5f35\u6027\u306b\u512a\u308c\u3066\u3044\u307e\u3059\u3002<\/li>\n\n\n\n<li>Apache ZooKeeper: ZooKeeper \u306f\u3001\u5206\u6563\u30b7\u30b9\u30c6\u30e0\u306e\u69cb\u6210\u3001\u30e1\u30bf\u30c7\u30fc\u30bf\u3001\u304a\u3088\u3073\u72b6\u614b\u60c5\u5831\u3092\u7ba1\u7406\u3059\u308b\u5206\u6563\u8abf\u6574\u30b5\u30fc\u30d3\u30b9\u3067\u3059\u3002 ZooKeeper\u306fJava\u8a00\u8a9e\u306b\u57fa\u3065\u3044\u3066\u304a\u308a\u3001\u9ad8\u53ef\u7528\u6027\u3001\u9ad8\u6027\u80fd\u3001\u4fe1\u983c\u6027\u304c\u7279\u5fb4\u3067\u3059\u3002<\/li>\n\n\n\n<li>JHipster:JHipster\u306f\u3001\u6700\u65b0\u306eWeb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u69cb\u7bc9\u3059\u308b\u305f\u3081\u306e\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u3067\u3059\u3002 JHipster\u306f\u3001Spring Boot\u3001AngularJS\u3001Bootstrap\u3001\u304a\u3088\u3073\u305d\u306e\u4ed6\u306e\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u306b\u57fa\u3065\u3044\u3066\u304a\u308a\u3001\u8fc5\u901f\u306a\u958b\u767a\u3001\u30de\u30a4\u30af\u30ed\u30b5\u30fc\u30d3\u30b9\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3001\u304a\u3088\u3073\u30af\u30e9\u30a6\u30c9\u5c55\u958b\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\n\n\n\n<li>Apache Tomcat: Tomcat \u306f\u3001Java Web \u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u5b9f\u884c\u3059\u308b\u305f\u3081\u306e\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u306e Web \u30b5\u30fc\u30d0\u30fc\u304a\u3088\u3073\u30b5\u30fc\u30d6\u30ec\u30c3\u30c8 \u30b3\u30f3\u30c6\u30ca\u30fc\u3067\u3059\u3002 Tomcat\u306fJava\u8a00\u8a9e\u306b\u57fa\u3065\u3044\u3066\u304a\u308a\u3001\u9ad8\u53ef\u7528\u6027\u3001\u9ad8\u6027\u80fd\u3001\u30b9\u30b1\u30fc\u30e9\u30d3\u30ea\u30c6\u30a3\u304c\u7279\u5fb4\u3067\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u4e0a\u8a18\u306f\u3001\u3055\u307e\u3056\u307e\u306a\u5206\u91ce\u3084\u30b7\u30ca\u30ea\u30aa\u3067\u5e45\u5e83\u3044\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3068\u5f71\u97ff\u529b\u3092\u6301\u3064\u512a\u308c\u305fJava\u30d9\u30fc\u30b9\u306e\u30b7\u30b9\u30c6\u30e0\u306e\u3044\u304f\u3064\u304b\u306e\u4f8b\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/edu.ujhb.org\/?p=860\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>Github\u3067\u306eJava\u306e\u512a\u308c\u305f\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3068\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u306f\u4f55\u3067\u3059\u304b<\/p>\n\n\n\n<p>Github\u306b\u306fJava\u306e\u512a\u308c\u305f\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3084\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u304c\u305f\u304f\u3055\u3093\u3042\u308a\u307e\u3059\u304c\u3001\u3088\u308a\u4eba\u6c17\u304c\u3042\u308a\u5f71\u97ff\u529b\u306e\u3042\u308b\u3082\u306e\u3092\u3044\u304f\u3064\u304b\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Java\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u30a2\u30a4\u30c7\u30a2:\u3053\u308c\u306f\u3001\u6709\u540d\u306a\u30a2\u30e1\u30ea\u30ab\u306e\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30fc\u79d1\u5b66\u8005\u3067\u3042\u308b\u30d6\u30eb\u30fc\u30b9\u30a8\u30c3\u30b1\u30eb\u306b\u3088\u3063\u3066\u66f8\u304b\u308c\u305fJava\u30af\u30e9\u30b7\u30c3\u30af\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3067\u3059\u3002 \u3053\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3067\u306f\u3001Java\u8a00\u8a9e\u306e\u30b3\u30a2\u6982\u5ff5\u3068\u57fa\u672c\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u8aac\u660e\u3057\u3001Java\u306e\u521d\u5fc3\u8005\u3068\u4e0a\u7d1a\u958b\u767a\u8005\u306b\u3068\u3063\u3066\u306a\u304f\u3066\u306f\u306a\u3089\u306a\u3044\u30ac\u30a4\u30c9\u3067\u3059\u3002 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\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u3068\u516c\u5f0fJava\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3078\u306e\u8ca2\u732e\u306fGithub\u306b\u3042\u308a\u307e\u3059\u3002<\/li>\n\n\n\n<li>Java\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u5206\u6790:\u3053\u308c\u306f\u3001\u56fd\u5185\u5916\u306e\u6709\u540d\u306a\u4f01\u696d\u3084\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u306eJava\u958b\u767a\u8005\u306b\u3088\u3063\u3066\u66f8\u304b\u308c\u305f\u4e00\u9023\u306eJava\u30bd\u30fc\u30b9\u5206\u6790\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3067\u3059\u3002 \u3053\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3067\u306f\u3001Java\u30b3\u30a2\u30af\u30e9\u30b9\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u5b9f\u88c5\u539f\u5247\u3068\u8a2d\u8a08\u30a2\u30a4\u30c7\u30a2\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u304a\u308a\u3001Java\u958b\u767a\u8005\u304c\u30b9\u30ad\u30eb\u3092\u5411\u4e0a\u3055\u305b\u308b\u306e\u306b\u975e\u5e38\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/li>\n\n\n\n<li>Java\u30b3\u30df\u30e5\u30cb\u30c6\u30a3:Java\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u306f\u3001\u56fd\u5185\u5916\u306e\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u3084\u30d5\u30a9\u30fc\u30e9\u30e0\u3092\u542b\u3081\u3001Java\u958b\u767a\u8005\u304c\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3\u3068\u5b66\u7fd2\u3092\u884c\u3046\u305f\u3081\u306e\u91cd\u8981\u306a\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3067\u3059\u3002 \u56fd\u5185\u306eJava\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u306b\u306fJava China\u3001Javaworld China\u3001OSChina\u306a\u3069\u304c\u542b\u307e\u308c\u3001\u5916\u56fd\u306eJava\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u306b\u306f Java.net\u3001Oracle\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u3001Reddit\u306a\u3069\u304c\u542b\u307e\u308c\u307e\u3059\u3002 \u3053\u308c\u3089\u306e\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u30fc\u306f\u3001\u8c4a\u5bcc\u306a Java \u30ea\u30bd\u30fc\u30b9\u3068\u77e5\u8b58\u3092\u63d0\u4f9b\u3057\u3001Java \u958b\u767a\u8005\u304c\u81ea\u5206\u81ea\u8eab\u3092\u30a2\u30d4\u30fc\u30eb\u3057\u3001\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u3068\u308b\u305f\u3081\u306e\u91cd\u8981\u306a\u5834\u6240\u3067\u3082\u3042\u308a\u307e\u3059\u3002<\/li>\n\n\n\n<li>Java\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u30d7\u30ed\u30b8\u30a7\u30af\u30c8:Github\u306b\u306f\u3001Java\u958b\u767a\u8005\u304cJava\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u3092\u5b66\u3073\u3001\u9069\u7528\u3059\u308b\u306e\u306b\u5f79\u7acb\u3064\u512a\u308c\u305fJava\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u304c\u305f\u304f\u3055\u3093\u3042\u308a\u307e\u3059\u3002 \u305f\u3068\u3048\u3070\u3001Spring Framework\u3001Apache Hadoop\u3001Elasticsearch\u306a\u3069\u3001\u3053\u308c\u3089\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u3001\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3001\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u306fGithub\u306b\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u4e0a\u8a18\u306f\u3001\u3044\u304f\u3064\u304b\u306e\u512a\u308c\u305fJava\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3068\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u306e\u4f8b\u3067\u3042\u308a\u3001Java\u958b\u767a\u8005\u304c\u5b66\u7fd2\u3057\u3066\u9069\u7528\u3059\u308b\u306e\u306b\u975e\u5e38\u306b\u5f79\u7acb\u3064\u8c4a\u5bcc\u306aJava\u30ea\u30bd\u30fc\u30b9\u3068\u77e5\u8b58\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>IT\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u306e\u30d3\u30c7\u30aa\u3092\u3084\u308a\u305f\u3044\u306e\u3067 &hellip; 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