{"id":3130,"date":"2022-09-07T09:00:08","date_gmt":"2022-09-07T00:00:08","guid":{"rendered":"https:\/\/meister-kentei.jp\/magazine\/?p=3130"},"modified":"2022-09-05T15:08:24","modified_gmt":"2022-09-05T06:08:24","slug":"java%e3%81%ae%e9%85%8d%e5%88%97%e3%81%a8%e3%81%af%ef%bc%9f%e5%9f%ba%e6%9c%ac%e3%81%8b%e3%82%89%e5%bf%9c%e7%94%a8%e3%81%be%e3%81%a7%e4%bd%bf%e3%81%84%e6%96%b9%e3%82%92%e3%82%8f%e3%81%8b%e3%82%8a","status":"publish","type":"post","link":"https:\/\/meister-kentei.jp\/magazine\/programming\/3130\/","title":{"rendered":"Java\u306e\u914d\u5217\u3068\u306f\uff1f\u57fa\u672c\u304b\u3089\u5fdc\u7528\u307e\u3067\u4f7f\u3044\u65b9\u3092\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac"},"content":{"rendered":"<div id=\"toc_container\" class=\"toc_white no_bullets\"><p class=\"toc_title\">\u76ee\u6b21<\/p><ul class=\"toc_list\"><li><a href=\"#Java\"><span class=\"toc_number toc_depth_1\">1<\/span> Java\u306e\u914d\u5217\u306e\u57fa\u790e\u77e5\u8b58<\/a><ul><li><a href=\"#Java-2\"><span class=\"toc_number toc_depth_2\">1.1<\/span> Java\u306e\u914d\u5217\u3068\u306f\uff1f<\/a><\/li><li><a href=\"#Java-3\"><span class=\"toc_number toc_depth_2\">1.2<\/span> Java\u306e\u914d\u5217\u306e\u57fa\u672c\u30eb\u30fc\u30eb<\/a><\/li><\/ul><\/li><li><a href=\"#Java-4\"><span class=\"toc_number toc_depth_1\">2<\/span> Java\u306e\u914d\u5217\uff1c\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\uff1e<\/a><ul><li><a href=\"#i\"><span class=\"toc_number toc_depth_2\">2.1<\/span> \u914d\u5217\u306e\u5ba3\u8a00\u3068\u521d\u671f\u5316<\/a><\/li><li><a href=\"#i-2\"><span class=\"toc_number toc_depth_2\">2.2<\/span> \u914d\u5217\u306e\u30c7\u30fc\u30bf\u3092\u51fa\u529b<\/a><\/li><\/ul><\/li><li><a href=\"#Java-5\"><span class=\"toc_number toc_depth_1\">3<\/span> Java\u306e\u914d\u5217\uff1c\u5fdc\u7528\u7684\u306a\u4f7f\u3044\u65b9\uff1e<\/a><ul><li><a href=\"#i-3\"><span class=\"toc_number toc_depth_2\">3.1<\/span> \u914d\u5217\u306e\u8981\u7d20\u6570\u3092\u53d6\u5f97\u3059\u308b<\/a><\/li><li><a href=\"#i-4\"><span class=\"toc_number toc_depth_2\">3.2<\/span> \u914d\u5217\u306e\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b<\/a><\/li><li><a href=\"#i-5\"><span class=\"toc_number toc_depth_2\">3.3<\/span> \u914d\u5217\u3092\u6587\u5b57\u5217\u306b\u5909\u63db\u3059\u308b<\/a><\/li><li><a href=\"#i-6\"><span class=\"toc_number toc_depth_2\">3.4<\/span> \u914d\u5217\u3092\u30bd\u30fc\u30c8\u3059\u308b<\/a><\/li><\/ul><\/li><li><a href=\"#Java-6\"><span class=\"toc_number toc_depth_1\">4<\/span> Java\u306e\u914d\u5217\u3092\u30de\u30b9\u30bf\u30fc\u3057\u3066\u52b9\u7387\u3088\u304f\u30b3\u30fc\u30c9\u3092\u66f8\u3053\u3046\uff01<\/a><\/li><\/ul><\/div>\n<p>\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306b\u304a\u3044\u3066\u3001\u540c\u3058\u3088\u3046\u306a\u30c7\u30fc\u30bf\u3092\u8907\u6570\u4f7f\u3046\u3053\u3068\u304c\u3088\u304f\u3042\u308a\u307e\u3059\u3002<br \/>\n\u8907\u6570\u306e\u30c7\u30fc\u30bf\u3092\u4f7f\u3046\u6642\u306b\u4fbf\u5229\u306a\u306e\u304c\u3001<span class=\"marker\">\u300c\u914d\u5217\u300d<\/span>\u3067\u3059\u3002<br \/>\n\u3042\u3089\u3086\u308b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u3067\u4f7f\u308f\u308c\u3066\u3044\u308b\u6a5f\u80fd\u306e1\u3064\u3067\u3059\u304c\u3001\u4eca\u56de\u306f<span class=\"marker\">Java\u306b\u304a\u3051\u308b\u914d\u5217\u306e\u4f7f\u3044\u65b9<\/span>\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<p>\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u5b66\u7fd2\u306b\u3064\u3044\u3066\u306f\u3001\u6b21\u306e\u8a18\u4e8b\u3082\u53c2\u8003\u306b\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p><a href=\"https:\/\/meister-kentei.jp\/magazine\/programming\/7\/\">\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u521d\u5fc3\u8005\u304c\u52c9\u5f37\u3059\u308b\u969b\u306e\u5fc3\u5f97\uff01<\/a><\/p>\n<h2><span id=\"Java\">Java\u306e\u914d\u5217\u306e\u57fa\u790e\u77e5\u8b58<\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3144\" src=\"https:\/\/meister-kentei.jp\/magazine\/wp-content\/uploads\/2022\/08\/coding-gda3135e1f_1920.jpg\" alt=\"\" width=\"1920\" height=\"1280\" \/>\u307e\u305a\u306fJava\u306e\u914d\u5217\u306e\u6982\u8981\u3092\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002<br \/>\nJava\u306b\u304a\u3044\u3066\u914d\u5217\u3068\u306f\u3001<span class=\"marker\">\u300c\u540c\u3058\u578b\u306e\u8907\u6570\u306e\u5024\u3092\u307e\u3068\u3081\u3066\u6271\u3046\u3053\u3068\u306e\u3067\u304d\u308b\u5909\u6570\u300d<\/span>\u306e\u3053\u3068\u3067\u3059\u3002<\/p>\n<h3><span id=\"Java-2\">Java\u306e\u914d\u5217\u3068\u306f\uff1f<\/span><\/h3>\n<p>Java\u306b\u304a\u3044\u3066\u300c\u914d\u5217\u300d\u3068\u306f\u3001<strong>\u5909\u6570\u306e\u4e00\u7a2e<\/strong>\u3067\u3059\u3002<br \/>\n\u5909\u6570\u3068\u306f\u3001\u5024\u3092\u683c\u7d0d\u3057\u3066\u304a\u304f\u7bb1\u306e\u3088\u3046\u306a\u3082\u306e\u3067\u3001\u4e00\u3005\u5024\u305d\u306e\u3082\u306e\u306b\u64cd\u4f5c\u3092\u52a0\u3048\u305a\u3068\u3082\u3001\u5909\u6570\u3092\u64cd\u4f5c\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u683c\u7d0d\u3055\u308c\u3066\u3044\u308b\u5024\u3092\u5909\u66f4\u3057\u305f\u308a\u3001\u51fa\u529b\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u672c\u6765\u3001\u5909\u6570\u306b\u306f\u4e00\u3064\u306e\u5024\u3057\u304b\u683c\u7d0d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3002<br \/>\n\u3057\u304b\u3057\u3001\u5b9f\u969b\u306b\u306f\u540c\u3058\u3088\u3046\u306a\u5024\u3092\u8907\u6570\u4f7f\u3046\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<br \/>\n\u305f\u3068\u3048\u3070\u3001\u751f\u5f92\u306e\u30c6\u30b9\u30c8\u306e\u70b9\u6570\u3092\u683c\u7d0d\u3057\u3066\u4f7f\u3044\u305f\u3044\u5834\u5408\u3001\u751f\u5f921\u4eba\u305a\u3064\u306b\u5909\u6570\u3092\u7528\u610f\u3059\u308b\u306e\u306f\u975e\u52b9\u7387\u7684\u3067\u3001\u30b3\u30fc\u30c9\u306e\u884c\u6570\u3082\u5897\u3048\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n<p>\u751f\u5f92\u5168\u54e1\u5206\u306e\u30c6\u30b9\u30c8\u306e\u70b9\u6570\u3092\u4e00\u3064\u306e\u5909\u6570\u306b\u683c\u7d0d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u306e\u304c\u300c\u914d\u5217\u300d\u3067\u3059\u3002<\/p>\n<h3><span id=\"Java-3\">Java\u306e\u914d\u5217\u306e\u57fa\u672c\u30eb\u30fc\u30eb<\/span><\/h3>\n<p>Java\u306e\u914d\u5217\u306e\u57fa\u672c\u7684\u306a\u30eb\u30fc\u30eb\u3092\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<p>1\u3064\u76ee\u306e\u30eb\u30fc\u30eb\u306f\u3001<span class=\"marker\">1\u3064\u306e\u914d\u5217\u306b\u306f\u540c\u3058\u578b\u306e\u5024\u3057\u304b\u683c\u7d0d\u3067\u304d\u306a\u3044<\/span>\u3001\u3068\u3044\u3046\u3082\u306e\u3067\u3059\u3002<br \/>\n\u5024\u306b\u306f\u300c\u578b\u300d\u3068\u3044\u3046\u3082\u306e\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u5024\u304c\u3069\u306e\u3088\u3046\u306a\u5024\u306a\u306e\u304b\u3092\u793a\u3059\u5206\u985e\u306e\u3053\u3068\u3067\u3059\u3002<br \/>\n\u300c\u6574\u6570\u578b\u300d\u300c\u6587\u5b57\u5217\u578b\u300d\u3068\u3044\u3063\u305f\u578b\u304c\u3042\u308a\u307e\u3059\u304c\u3001<strong>1\u3064\u306e\u914d\u5217\u306b\u306f\u540c\u3058\u578b\u306e\u3082\u306e\u3057\u304b\u5165\u308c\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093<\/strong>\u3002<\/p>\n<p>2\u3064\u76ee\u306e\u30eb\u30fc\u30eb\u306f\u3001<span class=\"marker\">\u914d\u5217\u306e\u8981\u7d20\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u6642\u306b\u300c\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u300d\u3092\u4f7f\u3046<\/span>\u3001\u3068\u3044\u3046\u3082\u306e\u3067\u3059\u3002<br \/>\n\u914d\u5217\u306b\u304a\u3051\u308b\u300c\u8981\u7d20\u300d\u3068\u306f\u3001\u683c\u7d0d\u3055\u308c\u3066\u3044\u308b1\u30641\u3064\u306e\u5024\u3067\u3059\u3002<br \/>\n\u3053\u306e\u8981\u7d20\u306b\u306f\u3001\u756a\u53f7\u304c\u5272\u308a\u5f53\u3066\u3089\u308c\u307e\u3059\u3002<br \/>\n\u300c\u914d\u5217\u300c\u30c6\u30b9\u30c8\u306e\u70b9\u6570\u300d\u306e2\u756a\u306e\u8981\u7d20\u306e\u5024\u3092\u51fa\u529b\u3059\u308b\u300d<br \/>\n\u3068\u3044\u3063\u305f\u547d\u4ee4\u3092\u3059\u308c\u3070\u30012\u756a\u76ee\u306b\u683c\u7d0d\u3055\u308c\u3066\u3044\u308b\u300c50\u300d\u3068\u3044\u3046\u5024\u304c\u51fa\u529b\u3055\u308c\u308b\u3001\u3068\u3044\u3046\u4ed5\u7d44\u307f\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<br \/>\n\u8981\u7d20\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u969b\u306e\u756a\u53f7\u306f\u3001\u300c\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u300d\u3068\u547c\u3070\u308c\u307e\u3059\u3002<br \/>\n\u300c\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u300d\u306f<span class=\"marker\">0\u304b\u3089\u30b9\u30bf\u30fc\u30c8\u3057\u30661, 2, \u2026\u3068\u3044\u3046\u9806\u756a<\/span>\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u306e\u5b66\u7fd2\u306b\u3064\u3044\u3066\u306f\u3001\u6b21\u306e\u8a18\u4e8b\u3082\u53c2\u8003\u306b\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p><a href=\"https:\/\/meister-kentei.jp\/magazine\/programming\/1753\/\">\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u72ec\u5b66\u3067\u5fc5\u8981\u306a\u3082\u306e4\u9078\uff01<\/a><\/p>\n<h2><span id=\"Java-4\">Java\u306e\u914d\u5217\uff1c\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\uff1e<\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3145\" src=\"https:\/\/meister-kentei.jp\/magazine\/wp-content\/uploads\/2022\/08\/code-g19cd969c3_1920.jpg\" alt=\"\" width=\"1920\" height=\"1281\" \/>Java\u306e\u914d\u5217\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u3092\u8aac\u660e\u3057\u3066\u3044\u304d\u307e\u3059\u3002<br \/>\n\u3053\u3053\u3067\u306f\u3001\u914d\u5217\u306e\u300c\u5ba3\u8a00\u300d\u300c\u521d\u671f\u5316\u300d\u300c\u30c7\u30fc\u30bf\u306e\u51fa\u529b\u300d\u3068\u3044\u30463\u3064\u3092\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<h3><span id=\"i\">\u914d\u5217\u306e\u5ba3\u8a00\u3068\u521d\u671f\u5316<\/span><\/h3>\n<p>\u914d\u5217\u306e\u300c\u5ba3\u8a00\u300d\u3068\u306f\u3001<span class=\"marker\">\u914d\u5217\u306b\u683c\u7d0d\u3055\u308c\u308b\u30c7\u30fc\u30bf\u306e\u578b\u3068\u914d\u5217\u540d\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068<\/span>\u3067\u3059\u3002<br \/>\n\u914d\u5217\u306e\u5ba3\u8a00\u65b9\u6cd5\u306f\u30012\u7a2e\u985e\u3042\u308a\u307e\u3059\u3002<\/p>\n<div class=\"single__box-secondary\">\n<div><strong>\u2460\u3000\u30c7\u30fc\u30bf\u578b[] \u914d\u5217\u540d<\/strong><br \/>\n<strong>\u2461\u3000\u30c7\u30fc\u30bf\u578b \u914d\u5217\u540d[]<\/strong><\/div>\n<\/div>\n<p>\u5b9f\u969b\u306b\u914d\u5217\u3092\u5ba3\u8a00\u3059\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30b3\u30fc\u30c9\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<div class=\"single__box-secondary\">\n<div>\n<pre class=\"prism line-numbers language-java\" data-lang=\"Java\">int[] scores = {80, 90, 50};\r\nint scores[] = {80, 90, 50};<\/pre>\n<\/div>\n<\/div>\n<p>\u4e0a\u8a18\u306e\u4f8b\u306f\u3001\u65e2\u306b\u683c\u7d0d\u3059\u308b\u8981\u7d20\u304c\u6c7a\u307e\u3063\u3066\u3044\u308b\u5834\u5408\u306e\u5ba3\u8a00\u306e\u4ed5\u65b9\u3067\u3059\u3002<br \/>\n\u914d\u5217\u3092\u521d\u671f\u5316\u3057\u3001\u7a7a\u306e\u914d\u5217\u3082\u6307\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<br \/>\n\u305d\u306e\u5834\u5408\u3067\u3082\u3001\u8981\u7d20\u306e\u500b\u6570\u306f\u6307\u5b9a\u3057\u3066\u304a\u304b\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002<br \/>\n\u914d\u5217\u3092\u521d\u671f\u5316\u3059\u308b\u969b\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u30b3\u30fc\u30c9\u3092\u66f8\u304d\u307e\u3059\u3002<\/p>\n<div class=\"single__box-secondary\">\n<pre>scores = new int[5];<\/pre>\n<\/div>\n<p>[]\u5185\u306e\u6570\u5b57\u304c\u3001\u8981\u7d20\u306e\u500b\u6570\u3067\u3059\u3002<\/p>\n<h3><span id=\"i-2\">\u914d\u5217\u306e\u30c7\u30fc\u30bf\u3092\u51fa\u529b<\/span><\/h3>\n<p>\u914d\u5217\u306e\u30c7\u30fc\u30bf\u3092\u51fa\u529b\u3059\u308b\u969b\u306f\u3001<strong>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3067\u756a\u53f7\u3092\u6307\u5b9a<\/strong>\u3057\u307e\u3059\u3002<\/p>\n<p>\u4f8b\u3048\u3070\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u914d\u5217\u3092\u4f5c\u6210\u3057\u305f\u3068\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<div class=\"single__box-secondary\">\n<div>\n<pre>String[] student = {\u4f50\u85e4, \u9234\u6728, \u7530\u4e2d, \u4f0a\u85e4};<\/pre>\n<\/div>\n<\/div>\n<p>\u7d9a\u3044\u3066\u3001\u3053\u306e\u914d\u5217\u306e3\u756a\u76ee\u306b\u683c\u7d0d\u3055\u308c\u3066\u3044\u308b\u5024\u3092\u51fa\u529b\u3059\u308b\u30b3\u30fc\u30c9\u3092\u66f8\u3044\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<div class=\"single__box-secondary\">\n<div>\n<pre>System.out.println(nums[2]);<\/pre>\n<\/div>\n<\/div>\n<p>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306f0\u304b\u3089\u30b9\u30bf\u30fc\u30c8\u3059\u308b\u305f\u3081\u30013\u756a\u76ee\u306e\u30c7\u30fc\u30bf\u306b\u30a2\u30af\u30bb\u30b9\u3057\u305f\u3044\u6642\u306f\u300c2\u300d\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<br \/>\n\u305d\u306e\u305f\u3081\u3001\u4e0a\u8a18\u306e\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3059\u308b\u3068<\/p>\n<div class=\"single__box-secondary\">\n<div>\n<pre>\u7530\u4e2d<\/pre>\n<\/div>\n<\/div>\n<p>\u3068\u51fa\u529b\u3055\u308c\u307e\u3059\u3002<\/p>\n<h2><span id=\"Java-5\">Java\u306e\u914d\u5217\uff1c\u5fdc\u7528\u7684\u306a\u4f7f\u3044\u65b9\uff1e<\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3146\" src=\"https:\/\/meister-kentei.jp\/magazine\/wp-content\/uploads\/2022\/08\/programming-g5c312bf3f_1920.jpg\" alt=\"\" width=\"1920\" height=\"1280\" \/>Java\u306e\u914d\u5217\u306e\u5fdc\u7528\u7684\u306a\u4f7f\u3044\u65b9\u3092\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002<br \/>\n\u3053\u3053\u3067\u306f\u3001<strong>\u300c\u8981\u7d20\u6570\u306e\u53d6\u5f97\u300d\u300c\u8981\u7d20\u306e\u8ffd\u52a0\u300d\u300c\u6587\u5b57\u5217\u3078\u306e\u5909\u63db\u300d\u300c\u914d\u5217\u306e\u30bd\u30fc\u30c8\u300d<\/strong>\u306e\u4ed5\u65b9\u3092\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<h3><span id=\"i-3\">\u914d\u5217\u306e\u8981\u7d20\u6570\u3092\u53d6\u5f97\u3059\u308b<\/span><\/h3>\n<p><span class=\"marker\">\u914d\u5217\u306b\u3044\u304f\u3064\u306e\u8981\u7d20\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u306e\u304b\u3092\u78ba\u8a8d\u3057\u305f\u3044\u6642\u306b\u306f\u3001\u300clength\u300d\u3092\u4f7f\u3044\u307e\u3059\u3002<\/span><br \/>\n\u5148\u307b\u3069\u306e\u4f8b\u3092\u518d\u5ea6\u4f7f\u3063\u3066\u307f\u307e\u3059\u3002<\/p>\n<div class=\"single__box-secondary\">\n<div>\n<pre>String[] student = {\u4f50\u85e4, \u9234\u6728, \u7530\u4e2d, \u4f0a\u85e4};\r\nSystem.out.println(student.length)<\/pre>\n<\/div>\n<\/div>\n<p>\u3053\u306e\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3059\u308b\u3068\u3001\u8981\u7d20\u306e\u500b\u6570\u3067\u3042\u308b<\/p>\n<div class=\"single__box-secondary\">\n<pre>4<\/pre>\n<\/div>\n<p>\u304c\u51fa\u529b\u3055\u308c\u307e\u3059\u3002<br \/>\nlength\u3092\u4f7f\u3046\u3053\u3068\u3067\u3001\u51e6\u7406\u3092\u8981\u7d20\u306e\u500b\u6570\u56de\u7e70\u308a\u8fd4\u3057\u305f\u3044\u5834\u5408\u306a\u3069\u306b\u8a18\u8ff0\u304c\u7c21\u5358\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h3><span id=\"i-4\">\u914d\u5217\u306e\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b<\/span><\/h3>\n<p>Java\u306e\u914d\u5217\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u65b9\u6cd5\u306f\u3059\u3053\u3057\u8907\u96d1\u3067\u3059\u3002<br \/>\n\u914d\u5217\u306f\u4e00\u5ea6\u4f5c\u3063\u3066\u3057\u307e\u3046\u3068\u3001<strong>\u8981\u7d20\u306e\u500b\u6570\u3092\u5909\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093<\/strong>\u3002<br \/>\n\u305d\u306e\u305f\u3081\u3001\u914d\u5217\u306e\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u969b\u306b\u306f\u3001<span class=\"marker\">\u65b0\u3057\u304f\u5225\u306e\u914d\u5217\u3092\u7528\u610f\u3057\u3001\u305d\u306e\u914d\u5217\u306b\u5143\u306e\u914d\u5217\u3092\u30b3\u30d4\u30fc\u3059\u308b<\/span>\u3068\u3044\u3046\u624b\u9806\u3092\u3075\u3080\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u914d\u5217\u306e\u30b3\u30d4\u30fc\u306b\u306f\u3001<span class=\"marker\">\u300carraycopy\u300d<\/span>\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3044\u307e\u3059\u3002<br \/>\n\u300carraycopy\u300d\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u6b21\u306e\u3088\u3046\u306b\u4f7f\u3044\u307e\u3059\u3002<\/p>\n<div class=\"single__box-secondary\">\n<div>\n<pre>System.arraycopy(\u30b3\u30d4\u30fc\u5143\u306e\u914d\u5217, \u30b3\u30d4\u30fc\u5143\u914d\u5217\u306e\u958b\u59cb\u4f4d\u7f6e, \u30b3\u30d4\u30fc\u5148\u306e\u914d\u5217, \u30b3\u30d4\u30fc\u5148\u914d\u5217\u306e\u958b\u59cb\u4f4d\u7f6e, \u30b3\u30d4\u30fc\u5143\u914d\u5217\u306e\u8981\u7d20\u6570)\r\n<\/pre>\n<\/div>\n<\/div>\n<p>\u4ee5\u4e0b\u306f\u3001\u300cscores\u300d\u3068\u3044\u3046\u914d\u5217\u306e\u5024\u3092\u300cscrores2\u300d\u306b\u30b3\u30d4\u30fc\u3059\u308b\u30b3\u30fc\u30c9\u3067\u3059\u3002<\/p>\n<div class=\"single__box-secondary\">\n<div>\n<pre>public class Main {\r\n    \u3000\u3000public static void main(String[] args) throws Exception {\r\n        \u3000\u3000int[] scores = {80,90,50,60,70};\r\n       \u3000\u3000 int[] scores2 = new int[10];\r\n        \u3000\u3000System.arraycopy(score1, 0, scores2, 0, scores.length);\r\n        \u3000\u3000for(int i=0; i&lt;scores2.length; i++){\r\n          \u3000\u3000\u3000\u3000System.out.println(score2[i]);\r\n      \u3000\u3000}\r\n  \u3000\u3000}\r\n}<\/pre>\n<\/div>\n<\/div>\n<p>\u3053\u306e\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3057\u305f\u969b\u306e\u7d50\u679c\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<div class=\"single__box-secondary\">\n<div>\n<pre>80\r\n90\r\n50\r\n60\r\n70\r\n0\r\n0\r\n0\r\n0\r\n0<\/pre>\n<\/div>\n<\/div>\n<p>\u300cscores\u300d\u306b\u683c\u7d0d\u3055\u308c\u3066\u3044\u308b5\u3064\u306e\u8981\u7d20\u304c\u683c\u7d0d\u3055\u308c\u3066\u304a\u308a\u30015\u3064\u5206\u306e\u8981\u7d20\u304c\u65b0\u305f\u306b\u4f5c\u3089\u308c\u3066\u3044\u307e\u3059\u3002<br \/>\n\u3053\u306e\u3088\u3046\u306b\u3001\u914d\u5217\u306e\u8981\u7d20\u3092\u8ffd\u52a0\u3057\u305f\u3044\u6642\u306b\u306f\u300carraycopy\u300d\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n<h3><span id=\"i-5\">\u914d\u5217\u3092\u6587\u5b57\u5217\u306b\u5909\u63db\u3059\u308b<\/span><\/h3>\n<p>\u914d\u5217\u306e\u30c7\u30fc\u30bf\u3092\u3001<strong>\u4e00\u3064\u306e\u6587\u5b57\u5217\u306b\u5909\u63db\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059<\/strong>\u3002<br \/>\n\u6587\u5b57\u5217\u3078\u306e\u5909\u63db\u306f\u3001<span class=\"marker\">\u300cString.join\u300d<\/span>\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3044\u307e\u3059\u3002<br \/>\n\u300cString.join\u300d\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u6b21\u306e\u3088\u3046\u306b\u4f7f\u3044\u307e\u3059\u3002<\/p>\n<div class=\"single__box-secondary\">\n<div>\n<pre>String.join(\"\u533a\u5207\u308a\u6587\u5b57\", \u914d\u5217\u540d)<\/pre>\n<\/div>\n<\/div>\n<p>\u5b9f\u969b\u306b\u4f7f\u3063\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<div class=\"single__box-secondary\">\n<div>\n<pre>public class test{\r\n\u3000\u3000\u3000 public static void main(String[] args){\r\n\u3000\u3000\u3000\u3000\u3000String[] student ={\u201c\u4f50\u85e4\u201d, \u201c\u9234\u6728\u201d, \u201c\u7530\u4e2d\u201d};\r\n\u3000\u3000\u3000\u3000\u3000String str_student = String.join(\u201c,\u201d, student);\r\n\u3000\u3000\u3000\u3000\u3000\u3000 System.out.println(str_student);\r\n\u3000\u3000\u3000 }\r\n}<\/pre>\n<\/div>\n<\/div>\n<p>\u4e0a\u8a18\u306e\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3059\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u7d50\u679c\u304c\u51fa\u529b\u3055\u308c\u307e\u3059\u3002<\/p>\n<div class=\"single__box-secondary\">\n<div>\n<pre>\u4f50\u85e4,\u9234\u6728,\u7530\u4e2d<\/pre>\n<\/div>\n<\/div>\n<p>\u4eca\u56de\u306f\u533a\u5207\u308a\u6587\u5b57\u3068\u3057\u3066\u300c,\u300d\u3092\u6307\u5b9a\u3057\u305f\u305f\u3081\u3001\u8981\u7d20\u304c\u300c,\u300d\u3067\u533a\u5207\u3089\u308c\u305f\u6587\u5b57\u5217\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3><span id=\"i-6\">\u914d\u5217\u3092\u30bd\u30fc\u30c8\u3059\u308b<\/span><\/h3>\n<p>\u914d\u5217\u3092\u30bd\u30fc\u30c8\u3059\u308b\u969b\u306f\u3001<span class=\"marker\">\u300cArrays.sort\u300d<\/span>\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3044\u307e\u3059\u3002<br \/>\n\u300cArrays\u300d\u30af\u30e9\u30b9\u306f\u3001java.util\u306e\u30d1\u30c3\u30b1\u30fc\u30b8\u3067\u3059\u3002import\u3092\u5fd8\u308c\u306a\u3044\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<div class=\"single__box-secondary\">\n<div>\n<pre>import java.util.Arrays;\r\n\r\npublic class Main {\r\n\u3000\u3000\u3000\u3000public static void main(String[] args) throws Exception {\r\n\u3000\u3000\u3000\u3000\u3000\u3000int scores[] = {80,90,50,60,70};\r\n\u3000\u3000\u3000\u3000\u3000\u3000Arrays.sort(scores);\r\n\u3000\u3000\u3000\u3000\u3000\u3000for(int i=0; i&lt;scores.length; i++){\r\n\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000System.out.println(scores[i]); \r\n\u3000\u3000\u3000\u3000\u3000\u3000}\r\n\u3000\u3000\u3000}\r\n\r\n}<\/pre>\n<\/div>\n<\/div>\n<p>\u4e0a\u8a18\u306e\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3059\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u7d50\u679c\u304c\u51fa\u529b\u3055\u308c\u307e\u3059\u3002<\/p>\n<div class=\"single__box-secondary\">\n<div>\n<pre>50,60,70,80,90<\/pre>\n<\/div>\n<\/div>\n<h2><span id=\"Java-6\">Java\u306e\u914d\u5217\u3092\u30de\u30b9\u30bf\u30fc\u3057\u3066\u52b9\u7387\u3088\u304f\u30b3\u30fc\u30c9\u3092\u66f8\u3053\u3046\uff01<\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3147\" src=\"https:\/\/meister-kentei.jp\/magazine\/wp-content\/uploads\/2022\/08\/laptop-g934ec75db_1920.jpg\" alt=\"\" width=\"1920\" height=\"1279\" \/>\u4eca\u56de\u306f\u3001Java\u306e\u914d\u5217\u306e\u4f7f\u3044\u65b9\u3092\u89e3\u8aac\u3057\u3066\u304d\u307e\u3057\u305f\u3002<br \/>\n\u914d\u5217\u306f\u3001\u540c\u3058\u30c7\u30fc\u30bf\u578b\u306e\u3082\u306e\u3092\u307e\u3068\u3081\u3066\u4e00\u3064\u306e\u5909\u6570\u5185\u306b\u683c\u7d0d\u3067\u304d\u308b\u4fbf\u5229\u306a\u3082\u306e\u3067\u3059\u3002<\/p>\n<p>\u540c\u3058\u3088\u3046\u306a\u30c7\u30fc\u30bf\u3092\u591a\u6570\u6271\u3046\u5834\u5408\u306a\u3069\u3001<strong>\u6709\u52b9\u306b\u4f7f\u3046\u3053\u3068\u3067\u52b9\u7387\u3088\u304f\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059<\/strong>\u3002<br \/>\n\u4eca\u56de\u7d39\u4ecb\u3057\u305f\u4f7f\u3044\u65b9\u4ee5\u5916\u306b\u3082\u3001\u5fdc\u7528\u7684\u306a\u4f7f\u3044\u65b9\u304c\u3044\u304f\u3064\u304b\u3042\u308a\u307e\u3059\u3002<br \/>\n\u305c\u3072\u4f7f\u3044\u65b9\u3092\u30de\u30b9\u30bf\u30fc\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u5b66\u7fd2\u306f\u3001\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b9\u30af\u30fc\u30eb\u306e\u53d7\u8b1b\u304c\u304a\u3059\u3059\u3081\u3067\u3059\u3002<br \/>\n\u30b9\u30af\u30fc\u30eb\u9078\u3073\u306f\u3001\u6b21\u306e\u8a18\u4e8b\u3092\u53c2\u8003\u306b\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p><a href=\"https:\/\/meister-kentei.jp\/magazine\/programming\/900\/\">\u304a\u3059\u3059\u3081\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b9\u30af\u30fc\u30eb\u6bd4\u8f03\u30e9\u30f3\u30ad\u30f3\u30b0TOP10\uff01<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u76ee\u6b211 Java\u306e\u914d\u5217\u306e\u57fa\u790e\u77e5\u8b581.1 Java\u306e\u914d\u5217\u3068\u306f\uff1f1.2 Java\u306e\u914d\u5217\u306e\u57fa\u672c\u30eb\u30fc\u30eb2 Java\u306e\u914d\u5217\uff1c\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\uff1e2.1 \u914d\u5217\u306e\u5ba3\u8a00\u3068\u521d\u671f\u53162.2 \u914d\u5217\u306e\u30c7\u30fc\u30bf\u3092\u51fa\u529b3 Java\u306e\u914d\u5217\uff1c\u5fdc\u7528\u7684\u306a\u4f7f\u3044\u65b9\uff1e3 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