{"id":10379,"date":"2026-04-09T18:04:22","date_gmt":"2026-04-09T09:04:22","guid":{"rendered":"https:\/\/techmania.jp\/blog\/?p=10379"},"modified":"2026-04-09T18:04:23","modified_gmt":"2026-04-09T09:04:23","slug":"java-list","status":"publish","type":"post","link":"https:\/\/techmania.jp\/blog\/java-list\/","title":{"rendered":"\u3010Java\u5165\u9580\u3011List\u306e\u4f7f\u3044\u65b9\uff5c\u521d\u671f\u5316\u30fb\u30bd\u30fc\u30c8\u304b\u3089\u914d\u5217\u306e\u9055\u3044\u307e\u3067\u8a73\u3057\u304f\u89e3\u8aac"},"content":{"rendered":"\n<p>\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u884c\u3046\u969b\u306b\u3001\u8907\u6570\u306e\u30c7\u30fc\u30bf\u3092\u4e00\u3064\u306e\u307e\u3068\u307e\u308a\u3068\u3057\u3066\u6271\u3044\u305f\u3044\u30b1\u30fc\u30b9\u306f\u591a\u3005\u3042\u308a\u307e\u3059\u3002<br>Java\u306b\u304a\u3044\u3066\u3001\u540c\u3058\u7a2e\u985e\u306e\u30c7\u30fc\u30bf\u3092\u96c6\u3081\u3066\u7ba1\u7406\u3059\u308b\u5834\u5408\u306b\u6d3b\u7528\u3067\u304d\u308b\u306e\u304c\u3001Collection\u3092\u7d99\u627f\u3057\u305f\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e1\u3064\u3067\u3042\u308b \u300cList\u300d \u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4eca\u56de\u306f\u3001Java\u3067 List\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u3001\u57fa\u672c\u5185\u5bb9\u304b\u3089\u5fdc\u7528\u7684\u306a\u4f7f\u3044\u65b9\u307e\u3067\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u304d\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"outline__1\" class=\"wp-block-heading\">List\u3068\u306f\uff1f<\/h2>\n\n\n\n<p>List\u306f\u3001\u9806\u5e8f\u3092\u6301\u3063\u305f\u30c7\u30fc\u30bf\u96c6\u5408\u3092\u6271\u3046\u305f\u3081\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3067\u3059\u3002<br>\u5404\u8981\u7d20\u306f\u8ffd\u52a0\u3055\u308c\u305f\u9806\u756a\u306b\u4e26\u3073\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\uff08\u6dfb\u5b57\uff09 \u3092\u4f7f\u7528\u3057\u3066\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<br>\u307e\u305f\u3001\u540c\u3058\u304f Collection\u3092\u7d99\u627f\u3057\u305f\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3067\u3042\u308b Set\u3068\u7570\u306a\u308a\u3001\u540c\u3058\u5024\u3092\u91cd\u8907\u3057\u3066\u683c\u7d0d\u3067\u304d\u308b\u306e\u3082 List\u306e\u7279\u5fb4\u306e\uff11\u3064\u3067\u3059\u3002<\/p>\n\n\n\n<p>List\u3092\u5b9f\u969b\u306b\u4f7f\u7528\u3059\u308b\u969b\u306f\u3001ArrayList \u3084 LinkedList \u3068\u3044\u3063\u305f\u5b9f\u88c5\u30af\u30e9\u30b9\u3092\u5229\u7528\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"outline__1_1\" class=\"wp-block-heading\">List\u3068\u914d\u5217\u306e\u9055\u3044\u3068\u306f\uff1f<\/h3>\n\n\n\n<p>Java\u306b\u306f\u3001List\u306b\u4f3c\u305f\u30c7\u30fc\u30bf\u69cb\u9020\u3092\u6301\u3064 \u300c\u914d\u5217\u300d \u3068\u3044\u3046\u6a5f\u80fd\u3082\u5b58\u5728\u3057\u307e\u3059\u3002<br>\u3069\u3061\u3089\u3082\u8907\u6570\u306e\u30c7\u30fc\u30bf\u3092\u307e\u3068\u3081\u3066\u6271\u3046\u305f\u3081\u306e\u4ed5\u7d44\u307f\u3067\u3059\u304c\u3001\u3044\u304f\u3064\u304b\u306e\u7570\u306a\u308b\u70b9\u304c\u5b58\u5728\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3082\u3063\u3068\u3082\u5927\u304d\u306a\u9055\u3044\u306f\u3001\u5ba3\u8a00\u5f8c\u306e\u30b5\u30a4\u30ba\u5909\u66f4\u304c\u53ef\u80fd\u304b\u3069\u3046\u304b\u3068\u3044\u3046\u70b9\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u914d\u5217\u306f\u3001\u4e00\u5ea6\u4f5c\u6210\u3059\u308b\u3068\u5f8c\u304b\u3089\u30b5\u30a4\u30ba\u3092\u5909\u66f4\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u306a\u3044 (\u56fa\u5b9a\u9577\u3067\u3042\u308b) \u305f\u3081\u3001\u8981\u7d20\u306e\u8ffd\u52a0\u3084\u524a\u9664\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3002<br>\u305d\u306e\u305f\u3081\u3001\u5f8c\u304b\u3089\u8981\u7d20\u306e\u6570\u3092\u5897\u6e1b\u3059\u308b\u5834\u5408\u306f\u3001\u65b0\u3057\u304f\u7528\u610f\u3057\u305f\u914d\u5217\u306b\u5fc5\u8981\u306a\u8981\u7d20\u3092\u30b3\u30d4\u30fc\u3059\u308b\u306a\u3069\u3057\u3066\u5bfe\u5fdc\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4e00\u65b9\u3001List\u306f\u52d5\u7684\u306b\u30b5\u30a4\u30ba\u3092\u5909\u66f4\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd (\u53ef\u5909\u9577\u3067\u3042\u308b) \u306a\u305f\u3081\u3001\u8ffd\u52a0\u3084\u524a\u9664\u3082\u5bb9\u6613\u306b\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<br>\u30c7\u30fc\u30bf\u64cd\u4f5c\u306b\u95a2\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u3082\u8c4a\u5bcc\u306b\u7528\u610f\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u65e2\u5b58\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3046\u3060\u3051\u3067\u7c21\u5358\u306b\u64cd\u4f5c\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u8981\u7d20\u6570\u304c\u4e8b\u524d\u306b\u5206\u304b\u3089\u306a\u304b\u3063\u305f\u308a\u3001\u51e6\u7406\u5185\u5bb9\u306b\u5fdc\u3058\u3066\u30b5\u30a4\u30ba\u304c\u5909\u52d5\u3059\u308b\u3053\u3068\u304c\u591a\u3044\u5834\u5408\u306b\u306f\u3001List\u306e\u4f7f\u7528\u304c\u9069\u3057\u3066\u3044\u307e\u3059\u3002<br>\u53cd\u5bfe\u306b\u3001\u30b5\u30a4\u30ba\u304c\u56fa\u5b9a\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306f\u914d\u5217\u306e\u65b9\u304c\u51e6\u7406\u901f\u5ea6\u304c\u901f\u3044\u30b1\u30fc\u30b9\u3082\u3042\u308b\u305f\u3081\u3001\u7528\u9014\u306b\u5fdc\u3058\u305f\u4f7f\u3044\u5206\u3051\u304c\u91cd\u8981\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"outline__2\" class=\"wp-block-heading\">ArrayList\u3068LinkedList\u306e\u9055\u3044\u3068\u306f\uff1f<\/h2>\n\n\n\n<p>List\u306e\u4ee3\u8868\u7684\u306a\u5b9f\u88c5\u30af\u30e9\u30b9\u306b\u3001ArrayList \u3068 LinkedList \u306e2\u3064\u304c\u3042\u308a\u307e\u3059\u3002<br>\u30b5\u30a4\u30ba\u304c\u53ef\u5909\u9577\u3067\u3042\u308b\u70b9\u3084\u3001\u30e1\u30bd\u30c3\u30c9\u306b\u3088\u308b\u8ffd\u52a0\u3084\u524a\u9664\u306a\u3069\u304c\u53ef\u80fd\u3067\u3042\u308b\u70b9\u306f\u540c\u3058\u3067\u3059\u304c\u3001\u30c7\u30fc\u30bf\u3092\u4fdd\u5b58\u3059\u308b\u969b\u306e\u5185\u90e8\u69cb\u9020\u304c\u7570\u306a\u308b\u305f\u3081\u3001\u4f7f\u7528\u3059\u308b\u30af\u30e9\u30b9\u306b\u3088\u3063\u3066\u5f97\u610f\u306a\u51e6\u7406\u306b\u9055\u3044\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>ArrayList\u306f\u3001\u914d\u5217\u30d9\u30fc\u30b9\u306e\u30c7\u30fc\u30bf\u69cb\u9020\u3092\u6301\u3064\u30af\u30e9\u30b9\u3067\u3059\u3002<br>\u9023\u7d9a\u3059\u308b\u30e1\u30e2\u30ea\u9818\u57df\u3092\u78ba\u4fdd\u3057\u3066\u8981\u7d20\u3092\u683c\u7d0d\u3059\u308b\u305f\u3081\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306b\u3088\u308b\u5404\u8981\u7d20\u3078\u306e\u76f4\u63a5\u30a2\u30af\u30bb\u30b9\u304c\u53ef\u80fd\u3067\u3042\u308a\u3001\u8981\u7d20\u306e\u4f4d\u7f6e\u306b\u95a2\u4fc2\u306a\u304f\u9ad8\u901f\u3067\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u7279\u5fb4\u3092\u6301\u3061\u307e\u3059\u3002<br>\u4e00\u65b9\u3067\u3001\u5148\u982d\u3084\u9593\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3057\u305f\u308a\u3001\u53cd\u5bfe\u306b\u524a\u9664\u3057\u305f\u308a\u3059\u308b\u5834\u5408\u306b\u306f\u3001\u5f8c\u7d9a\u3059\u308b\u8981\u7d20\u306e\u4f4d\u7f6e\u3092\u79fb\u52d5\u3055\u305b\u308b\u5fc5\u8981\u304c\u3042\u308b\u305f\u3081\u3001\u51e6\u7406\u306b\u6642\u9593\u304c\u304b\u304b\u308b\u50be\u5411\u306b\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u5bfe\u3059\u308b LinkedList\u306f\u3001\u914d\u5217\u306e\u3088\u3046\u306b\u9023\u7d9a\u3057\u305f\u9818\u57df\u3092\u78ba\u4fdd\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u5404\u9818\u57df\u306b\u3042\u308b\u30c7\u30fc\u30bf\u3092\u30ea\u30f3\u30af\u3067\u7e4b\u3050\u3053\u3068\u306b\u3088\u3063\u3066\u4e00\u9023\u6027\u3092\u6301\u305f\u305b\u308b\u30af\u30e9\u30b9\u3067\u3059\u3002<br>\u30c7\u30fc\u30bf\u306e\u69cb\u9020\u4e0a\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306b\u3088\u3063\u3066\u30a2\u30af\u30bb\u30b9\u3059\u308b\u969b\u306b\u5148\u982d\u3084\u672b\u5c3e\u304b\u3089\u30ea\u30f3\u30af\u3092\u8fbf\u308b\u5fc5\u8981\u304c\u3042\u308b\u305f\u3081\u3001\u53d6\u5f97\u4f4d\u7f6e\u306b\u3088\u3063\u3066\u306f\u51e6\u7406\u306b\u6642\u9593\u304c\u304b\u304b\u3063\u3066\u3057\u307e\u3046\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<br>\u53cd\u5bfe\u306b\u3001\u8981\u7d20\u306e\u8ffd\u52a0\u3084\u524a\u9664\u306f\u30ea\u30f3\u30af\u3092\u7e4b\u304e\u76f4\u3059\u3060\u3051\u3067\u5b8c\u4e86\u3059\u308b\u305f\u3081\u3001\u3069\u306e\u4f4d\u7f6e\u306b\u8ffd\u52a0\u3057\u3066\u3082\u9ad8\u901f\u3067\u51e6\u7406\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u30ea\u30b9\u30c8\u306e\u8981\u7d20\u306b\u983b\u7e41\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u306f ArrayList\u3001\u8ffd\u52a0\u3084\u524a\u9664\u3092\u884c\u3046\u6a5f\u4f1a\u304c\u591a\u3044\u5834\u5408\u306f LinkedList\u304c\u4f7f\u7528\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"outline__2_1\" class=\"wp-block-heading\">ArrayList\u306e\u4f7f\u3044\u65b9<\/h3>\n\n\n\n<p>ArrayList \u3092\u4f7f\u7528\u3059\u308b\u969b\u306f\u3001\u300cnew ArrayList&lt;>()\u300d \u3067\u7a7a\u306e\u30ea\u30b9\u30c8\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono-NL.ttf\" style=\"font-size:clamp(14px, .875rem, 21px);font-family:Code-Pro-JetBrains-Mono-NL,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:clamp(20px, 1.25rem, 30px);--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:10px 0px 10px 16px;margin-bottom:-2px;width:100%;text-align:left;background-color:#304047;color:#d5ffff\">Java<\/span><span role=\"button\" tabindex=\"0\" style=\"color:#EEFFFF;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>List&lt;String> list = new ArrayList&lt;>();<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M4.5 12.75l6 6 9-13.5\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M16.5 8.25V6a2.25 2.25 0 00-2.25-2.25H6A2.25 2.25 0 003.75 6v8.25A2.25 2.25 0 006 16.5h2.25m8.25-8.25H18a2.25 2.25 0 012.25 2.25V18A2.25 2.25 0 0118 20.25h-7.5A2.25 2.25 0 018.25 18v-1.5m8.25-8.25h-6a2.25 2.25 0 00-2.25 2.25v6\"><\/path><\/svg><\/span><pre class=\"shiki material-theme\" style=\"background-color: #263238\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #C792EA\">List<\/span><span style=\"color: #89DDFF\">&lt;<\/span><span style=\"color: #C792EA\">String<\/span><span style=\"color: #89DDFF\">&gt;<\/span><span style=\"color: #EEFFFF\"> list <\/span><span style=\"color: #89DDFF\">=<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF; font-style: italic\">new<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #C792EA\">ArrayList<\/span><span style=\"color: #89DDFF\">&lt;&gt;();<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>List\u3067\u6271\u3048\u308b\u30c7\u30fc\u30bf\u578b\u306f\u53c2\u7167\u578b\u306e\u307f\u306e\u305f\u3081\u3001int\u306a\u3069\u306e\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002<br>\u305d\u306e\u305f\u3081\u3001\u6570\u5024\u306a\u3069\u3092\u683c\u7d0d\u3059\u308b\u5834\u5408\u306f\u30e9\u30c3\u30d1\u30fc\u30af\u30e9\u30b9\u3092\u6307\u5b9a\u3059\u308b\u3088\u3046\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono-NL.ttf\" style=\"font-size:clamp(14px, .875rem, 21px);font-family:Code-Pro-JetBrains-Mono-NL,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:clamp(20px, 1.25rem, 30px);--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:10px 0px 10px 16px;margin-bottom:-2px;width:100%;text-align:left;background-color:#304047;color:#d5ffff\">Java<\/span><span role=\"button\" tabindex=\"0\" style=\"color:#EEFFFF;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>\/\/ \u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u306e\u305f\u3081\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\nList&lt;int> list = new ArrayList&lt;>();\n\n\/\/ \u30e9\u30c3\u30d1\u30fc\u30af\u30e9\u30b9\u3067\u3042\u308b Integer\u3092\u4f7f\u7528\nList&lt;Integer> list = new ArrayList&lt;>();<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M4.5 12.75l6 6 9-13.5\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M16.5 8.25V6a2.25 2.25 0 00-2.25-2.25H6A2.25 2.25 0 003.75 6v8.25A2.25 2.25 0 006 16.5h2.25m8.25-8.25H18a2.25 2.25 0 012.25 2.25V18A2.25 2.25 0 0118 20.25h-7.5A2.25 2.25 0 018.25 18v-1.5m8.25-8.25h-6a2.25 2.25 0 00-2.25 2.25v6\"><\/path><\/svg><\/span><pre class=\"shiki material-theme\" style=\"background-color: #263238\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #546E7A; font-style: italic\">\/\/ \u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u306e\u305f\u3081\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b<\/span><\/span>\n<span class=\"line\"><span style=\"color: #C792EA\">List<\/span><span style=\"color: #89DDFF\">&lt;<\/span><span style=\"color: #C792EA\">int<\/span><span style=\"color: #89DDFF\">&gt;<\/span><span style=\"color: #EEFFFF\"> list <\/span><span style=\"color: #89DDFF\">=<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF; font-style: italic\">new<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #C792EA\">ArrayList<\/span><span style=\"color: #89DDFF\">&lt;&gt;();<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #546E7A; font-style: italic\">\/\/ \u30e9\u30c3\u30d1\u30fc\u30af\u30e9\u30b9\u3067\u3042\u308b Integer\u3092\u4f7f\u7528<\/span><\/span>\n<span class=\"line\"><span style=\"color: #C792EA\">List<\/span><span style=\"color: #89DDFF\">&lt;<\/span><span style=\"color: #C792EA\">Integer<\/span><span style=\"color: #89DDFF\">&gt;<\/span><span style=\"color: #EEFFFF\"> list <\/span><span style=\"color: #89DDFF\">=<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF; font-style: italic\">new<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #C792EA\">ArrayList<\/span><span style=\"color: #89DDFF\">&lt;&gt;();<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>\u4f5c\u6210\u5f8c\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u304c\u3001\u5ba3\u8a00\u3068\u540c\u6642\u306b\u5024\u3092\u6307\u5b9a\u3057\u305f\u3044\u5834\u5408\u306f\u3001\u4ee5\u4e0b\u306e\u65b9\u6cd5\u3082\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono-NL.ttf\" style=\"font-size:clamp(14px, .875rem, 21px);font-family:Code-Pro-JetBrains-Mono-NL,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:clamp(20px, 1.25rem, 30px);--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:10px 0px 10px 16px;margin-bottom:-2px;width:100%;text-align:left;background-color:#304047;color:#d5ffff\">Java<\/span><span role=\"button\" tabindex=\"0\" style=\"color:#EEFFFF;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>List&lt;String> list = new ArrayList&lt;>(List.of(\"A\", \"B\", \"C\"));<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M4.5 12.75l6 6 9-13.5\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M16.5 8.25V6a2.25 2.25 0 00-2.25-2.25H6A2.25 2.25 0 003.75 6v8.25A2.25 2.25 0 006 16.5h2.25m8.25-8.25H18a2.25 2.25 0 012.25 2.25V18A2.25 2.25 0 0118 20.25h-7.5A2.25 2.25 0 018.25 18v-1.5m8.25-8.25h-6a2.25 2.25 0 00-2.25 2.25v6\"><\/path><\/svg><\/span><pre class=\"shiki material-theme\" style=\"background-color: #263238\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #C792EA\">List<\/span><span style=\"color: #89DDFF\">&lt;<\/span><span style=\"color: #C792EA\">String<\/span><span style=\"color: #89DDFF\">&gt;<\/span><span style=\"color: #EEFFFF\"> list <\/span><span style=\"color: #89DDFF\">=<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF; font-style: italic\">new<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #C792EA\">ArrayList<\/span><span style=\"color: #89DDFF\">&lt;&gt;(<\/span><span style=\"color: #EEFFFF\">List<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">of<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">A<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">,<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">B<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">,<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">C<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">));<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<h3 id=\"outline__2_2\" class=\"wp-block-heading\">LinkedList\u306e\u4f7f\u3044\u65b9<\/h3>\n\n\n\n<p>LinkedList \u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u3082\u3001\u57fa\u672c\u7684\u306a\u65b9\u6cd5\u306f ArrayList\u3068\u5909\u308f\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono-NL.ttf\" style=\"font-size:clamp(14px, .875rem, 21px);font-family:Code-Pro-JetBrains-Mono-NL,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:clamp(20px, 1.25rem, 30px);--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:10px 0px 10px 16px;margin-bottom:-2px;width:100%;text-align:left;background-color:#304047;color:#d5ffff\">Java<\/span><span role=\"button\" tabindex=\"0\" style=\"color:#EEFFFF;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>\/\/ \u7a7a\u306e\u30ea\u30b9\u30c8\u3092\u4f5c\u6210\nList&lt;String> list = new LinkedList&lt;>();\n\n\/\/ \u4f5c\u6210\u3068\u540c\u6642\u306b\u8981\u7d20\u3092\u683c\u7d0d\nList&lt;String> list = new LinkedList&lt;>(List.of(\"A\", \"B\", \"C\"));<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M4.5 12.75l6 6 9-13.5\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M16.5 8.25V6a2.25 2.25 0 00-2.25-2.25H6A2.25 2.25 0 003.75 6v8.25A2.25 2.25 0 006 16.5h2.25m8.25-8.25H18a2.25 2.25 0 012.25 2.25V18A2.25 2.25 0 0118 20.25h-7.5A2.25 2.25 0 018.25 18v-1.5m8.25-8.25h-6a2.25 2.25 0 00-2.25 2.25v6\"><\/path><\/svg><\/span><pre class=\"shiki material-theme\" style=\"background-color: #263238\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #546E7A; font-style: italic\">\/\/ \u7a7a\u306e\u30ea\u30b9\u30c8\u3092\u4f5c\u6210<\/span><\/span>\n<span class=\"line\"><span style=\"color: #C792EA\">List<\/span><span style=\"color: #89DDFF\">&lt;<\/span><span style=\"color: #C792EA\">String<\/span><span style=\"color: #89DDFF\">&gt;<\/span><span style=\"color: #EEFFFF\"> list <\/span><span style=\"color: #89DDFF\">=<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF; font-style: italic\">new<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #C792EA\">LinkedList<\/span><span style=\"color: #89DDFF\">&lt;&gt;();<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #546E7A; font-style: italic\">\/\/ \u4f5c\u6210\u3068\u540c\u6642\u306b\u8981\u7d20\u3092\u683c\u7d0d<\/span><\/span>\n<span class=\"line\"><span style=\"color: #C792EA\">List<\/span><span style=\"color: #89DDFF\">&lt;<\/span><span style=\"color: #C792EA\">String<\/span><span style=\"color: #89DDFF\">&gt;<\/span><span style=\"color: #EEFFFF\"> list <\/span><span style=\"color: #89DDFF\">=<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF; font-style: italic\">new<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #C792EA\">LinkedList<\/span><span style=\"color: #89DDFF\">&lt;&gt;(<\/span><span style=\"color: #EEFFFF\">List<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">of<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">A<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">,<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">B<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">,<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">C<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">));<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<h2 id=\"outline__3\" class=\"wp-block-heading\">List\u3092\u521d\u671f\u5316\u3059\u308b\u65b9\u6cd5<\/h2>\n\n\n\n<p>List\u3092\u521d\u671f\u5316\u3059\u308b\u65b9\u6cd5\u306f\u3001\u521d\u671f\u5024\u3092\u8a2d\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u304b\u3069\u3046\u304b\u3067\u65b9\u6cd5\u304c\u5909\u308f\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"outline__3_1\" class=\"wp-block-heading\">new ArrayList\u3067\u7a7a\u306e\u30ea\u30b9\u30c8\u3092\u4f5c\u6210\u3059\u308b<\/h3>\n\n\n\n<p>\u521d\u671f\u5024\u306e\u8a2d\u5b9a\u304c\u5fc5\u8981\u306a\u3044\u5834\u5408\u306f\u3001\u7a7a\u306e\u30ea\u30b9\u30c8\u3092\u4f5c\u6210\u3059\u308b\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002<br>\u4e0a\u8ff0\u3057\u305f\u3088\u3046\u306b\u3001\u300cnew ArrayList&lt;&gt;()\u300d \u3084 \u300cnew LinkedList&lt;&gt;()\u300d \u3067\u7a7a\u306e\u30ea\u30b9\u30c8\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono-NL.ttf\" style=\"font-size:clamp(14px, .875rem, 21px);font-family:Code-Pro-JetBrains-Mono-NL,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:clamp(20px, 1.25rem, 30px);--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:10px 0px 10px 16px;margin-bottom:-2px;width:100%;text-align:left;background-color:#304047;color:#d5ffff\">Java<\/span><span role=\"button\" tabindex=\"0\" style=\"color:#EEFFFF;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>List&lt;Integer> arraylist = new ArrayList&lt;>();\n\nList&lt;Integer> linkedlist = new LinkedList&lt;>();<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M4.5 12.75l6 6 9-13.5\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M16.5 8.25V6a2.25 2.25 0 00-2.25-2.25H6A2.25 2.25 0 003.75 6v8.25A2.25 2.25 0 006 16.5h2.25m8.25-8.25H18a2.25 2.25 0 012.25 2.25V18A2.25 2.25 0 0118 20.25h-7.5A2.25 2.25 0 018.25 18v-1.5m8.25-8.25h-6a2.25 2.25 0 00-2.25 2.25v6\"><\/path><\/svg><\/span><pre class=\"shiki material-theme\" style=\"background-color: #263238\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #C792EA\">List<\/span><span style=\"color: #89DDFF\">&lt;<\/span><span style=\"color: #C792EA\">Integer<\/span><span style=\"color: #89DDFF\">&gt;<\/span><span style=\"color: #EEFFFF\"> arraylist <\/span><span style=\"color: #89DDFF\">=<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF; font-style: italic\">new<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #C792EA\">ArrayList<\/span><span style=\"color: #89DDFF\">&lt;&gt;();<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #C792EA\">List<\/span><span style=\"color: #89DDFF\">&lt;<\/span><span style=\"color: #C792EA\">Integer<\/span><span style=\"color: #89DDFF\">&gt;<\/span><span style=\"color: #EEFFFF\"> linkedlist <\/span><span style=\"color: #89DDFF\">=<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF; font-style: italic\">new<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #C792EA\">LinkedList<\/span><span style=\"color: #89DDFF\">&lt;&gt;();<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<h3 id=\"outline__3_2\" class=\"wp-block-heading\">Arrays.asList\u3067\u5024\u3092\u8ffd\u52a0\u3059\u308b<\/h3>\n\n\n\n<p>\u521d\u671f\u5024\u3092\u6307\u5b9a\u3057\u305f\u3044\u5834\u5408\u306b\u4f7f\u7528\u3067\u304d\u308b\u65b9\u6cd5\u306e1\u3064\u306b\u3001Arrays.asList() \u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono-NL.ttf\" style=\"font-size:clamp(14px, .875rem, 21px);font-family:Code-Pro-JetBrains-Mono-NL,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:clamp(20px, 1.25rem, 30px);--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:10px 0px 10px 16px;margin-bottom:-2px;width:100%;text-align:left;background-color:#304047;color:#d5ffff\">Java<\/span><span role=\"button\" tabindex=\"0\" style=\"color:#EEFFFF;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>List&lt;String> list = Arrays.asList(\"A\", \"B\", \"C\");<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M4.5 12.75l6 6 9-13.5\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M16.5 8.25V6a2.25 2.25 0 00-2.25-2.25H6A2.25 2.25 0 003.75 6v8.25A2.25 2.25 0 006 16.5h2.25m8.25-8.25H18a2.25 2.25 0 012.25 2.25V18A2.25 2.25 0 0118 20.25h-7.5A2.25 2.25 0 018.25 18v-1.5m8.25-8.25h-6a2.25 2.25 0 00-2.25 2.25v6\"><\/path><\/svg><\/span><pre class=\"shiki material-theme\" style=\"background-color: #263238\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #C792EA\">List<\/span><span style=\"color: #89DDFF\">&lt;<\/span><span style=\"color: #C792EA\">String<\/span><span style=\"color: #89DDFF\">&gt;<\/span><span style=\"color: #EEFFFF\"> list <\/span><span style=\"color: #89DDFF\">=<\/span><span style=\"color: #EEFFFF\"> Arrays<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">asList<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">A<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">,<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">B<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">,<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">C<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>\u4f7f\u7528\u6642\u306e\u6ce8\u610f\u70b9\u3068\u3057\u3066\u3001\u3053\u306e\u65b9\u6cd5\u3067\u4f5c\u6210\u3057\u305f\u30ea\u30b9\u30c8\u306f\u56fa\u5b9a\u9577\u3068\u306a\u308b\u305f\u3081\u3001\u8981\u7d20\u306e\u8ffd\u52a0\u3084\u524a\u9664\u306f\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3002<br>\u901a\u5e38\u306e\u30ea\u30b9\u30c8\u3068\u540c\u3058\u3088\u3046\u306b\u53ef\u5909\u9577\u306b\u3057\u305f\u3044\u5834\u5408\u306f\u3001new ArrayList&lt;&gt;()\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306b\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u5909\u66f4\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono-NL.ttf\" style=\"font-size:clamp(14px, .875rem, 21px);font-family:Code-Pro-JetBrains-Mono-NL,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:clamp(20px, 1.25rem, 30px);--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:10px 0px 10px 16px;margin-bottom:-2px;width:100%;text-align:left;background-color:#304047;color:#d5ffff\">Java<\/span><span role=\"button\" tabindex=\"0\" style=\"color:#EEFFFF;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>List&lt;String> list = new ArrayList&lt;>(Arrays.asList(\"A\", \"B\", \"C\"));<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M4.5 12.75l6 6 9-13.5\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M16.5 8.25V6a2.25 2.25 0 00-2.25-2.25H6A2.25 2.25 0 003.75 6v8.25A2.25 2.25 0 006 16.5h2.25m8.25-8.25H18a2.25 2.25 0 012.25 2.25V18A2.25 2.25 0 0118 20.25h-7.5A2.25 2.25 0 018.25 18v-1.5m8.25-8.25h-6a2.25 2.25 0 00-2.25 2.25v6\"><\/path><\/svg><\/span><pre class=\"shiki material-theme\" style=\"background-color: #263238\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #C792EA\">List<\/span><span style=\"color: #89DDFF\">&lt;<\/span><span style=\"color: #C792EA\">String<\/span><span style=\"color: #89DDFF\">&gt;<\/span><span style=\"color: #EEFFFF\"> list <\/span><span style=\"color: #89DDFF\">=<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF; font-style: italic\">new<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #C792EA\">ArrayList<\/span><span style=\"color: #89DDFF\">&lt;&gt;(<\/span><span style=\"color: #EEFFFF\">Arrays<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">asList<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">A<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">,<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">B<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">,<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">C<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">));<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<h2 id=\"outline__4\" class=\"wp-block-heading\">List\u306e\u57fa\u672c\u64cd\u4f5c<\/h2>\n\n\n\n<p>List\u306e\u5404\u7a2e\u64cd\u4f5c\u306f\u3001\u30e1\u30bd\u30c3\u30c9\u3092\u901a\u3057\u3066\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<br>\u305d\u308c\u305e\u308c\u306e\u30e1\u30bd\u30c3\u30c9\u306e\u4f7f\u3044\u65b9\u306b\u3064\u3044\u3066\u78ba\u8a8d\u3057\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 id=\"outline__4_1\" class=\"wp-block-heading\">add\u3067\u8981\u7d20\u3092\u8ffd\u52a0\u30fb\u633f\u5165\u3059\u308b<\/h3>\n\n\n\n<p>\u30ea\u30b9\u30c8\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u969b\u306f\u3001add\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono-NL.ttf\" style=\"font-size:clamp(14px, .875rem, 21px);font-family:Code-Pro-JetBrains-Mono-NL,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:clamp(20px, 1.25rem, 30px);--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:10px 0px 10px 16px;margin-bottom:-2px;width:100%;text-align:left;background-color:#304047;color:#d5ffff\">Java<\/span><span role=\"button\" tabindex=\"0\" style=\"color:#EEFFFF;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>\/\/ \u5024\u306e\u307f\u5834\u5408\nlist.add(\"A\");\n\n\/\/ \u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u6307\u5b9a\u3059\u308b\u5834\u5408\nlist.add(1, \"B\");<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M4.5 12.75l6 6 9-13.5\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M16.5 8.25V6a2.25 2.25 0 00-2.25-2.25H6A2.25 2.25 0 003.75 6v8.25A2.25 2.25 0 006 16.5h2.25m8.25-8.25H18a2.25 2.25 0 012.25 2.25V18A2.25 2.25 0 0118 20.25h-7.5A2.25 2.25 0 018.25 18v-1.5m8.25-8.25h-6a2.25 2.25 0 00-2.25 2.25v6\"><\/path><\/svg><\/span><pre class=\"shiki material-theme\" style=\"background-color: #263238\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #546E7A; font-style: italic\">\/\/ \u5024\u306e\u307f\u5834\u5408<\/span><\/span>\n<span class=\"line\"><span style=\"color: #EEFFFF\">list<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">add<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">A<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">);<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #546E7A; font-style: italic\">\/\/ \u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u6307\u5b9a\u3059\u308b\u5834\u5408<\/span><\/span>\n<span class=\"line\"><span style=\"color: #EEFFFF\">list<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">add<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #F78C6C\">1<\/span><span style=\"color: #89DDFF\">,<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">B<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>\u5024\u306e\u307f\u306e\u5834\u5408\u306f\u672b\u5c3e\u306b\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u6307\u5b9a\u3057\u305f\u5834\u5408\u306f\u5bfe\u8c61\u306e\u4f4d\u7f6e\u306b\u8981\u7d20\u304c\u8ffd\u52a0\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"outline__4_2\" class=\"wp-block-heading\">get\u3001set\u3067\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u30fb\u4e0a\u66f8\u304d\u3059\u308b<\/h3>\n\n\n\n<p>\u8981\u7d20\u3092\u53d6\u5f97\u3059\u308b\u5834\u5408\u306f get\u30e1\u30bd\u30c3\u30c9\u3001\u5024\u3092\u4e0a\u66f8\u304d\u3059\u308b\u5834\u5408\u306f set\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono-NL.ttf\" style=\"font-size:clamp(14px, .875rem, 21px);font-family:Code-Pro-JetBrains-Mono-NL,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:clamp(20px, 1.25rem, 30px);--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:10px 0px 10px 16px;margin-bottom:-2px;width:100%;text-align:left;background-color:#304047;color:#d5ffff\">Java<\/span><span role=\"button\" tabindex=\"0\" style=\"color:#EEFFFF;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>\/\/ \u8981\u7d20\u3092\u53d6\u5f97\u3059\u308b\u5834\u5408\nString val = list.get(0);\n\n\/\/ \u4e0a\u66f8\u304d\u3059\u308b\u5834\u5408\nlist.set(0, \"D\");<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M4.5 12.75l6 6 9-13.5\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M16.5 8.25V6a2.25 2.25 0 00-2.25-2.25H6A2.25 2.25 0 003.75 6v8.25A2.25 2.25 0 006 16.5h2.25m8.25-8.25H18a2.25 2.25 0 012.25 2.25V18A2.25 2.25 0 0118 20.25h-7.5A2.25 2.25 0 018.25 18v-1.5m8.25-8.25h-6a2.25 2.25 0 00-2.25 2.25v6\"><\/path><\/svg><\/span><pre class=\"shiki material-theme\" style=\"background-color: #263238\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #546E7A; font-style: italic\">\/\/ \u8981\u7d20\u3092\u53d6\u5f97\u3059\u308b\u5834\u5408<\/span><\/span>\n<span class=\"line\"><span style=\"color: #C792EA\">String<\/span><span style=\"color: #EEFFFF\"> val <\/span><span style=\"color: #89DDFF\">=<\/span><span style=\"color: #EEFFFF\"> list<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">get<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #F78C6C\">0<\/span><span style=\"color: #89DDFF\">);<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #546E7A; font-style: italic\">\/\/ \u4e0a\u66f8\u304d\u3059\u308b\u5834\u5408<\/span><\/span>\n<span class=\"line\"><span style=\"color: #EEFFFF\">list<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">set<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #F78C6C\">0<\/span><span style=\"color: #89DDFF\">,<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">D<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<h3 id=\"outline__4_3\" class=\"wp-block-heading\">remove\u3001clear\u3067\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3059\u308b<\/h3>\n\n\n\n<p>\u7279\u5b9a\u306e\u8981\u7d20\u3092\u524a\u9664\u3059\u308b\u5834\u5408\u306f remove\u30e1\u30bd\u30c3\u30c9\u3001\u5168\u3066\u306e\u8981\u7d20\u3092\u524a\u9664\u3059\u308b\u5834\u5408\u306f clear\u30e1\u30bd\u30c3\u30c9\u3067\u524a\u9664\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono-NL.ttf\" style=\"font-size:clamp(14px, .875rem, 21px);font-family:Code-Pro-JetBrains-Mono-NL,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:clamp(20px, 1.25rem, 30px);--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:10px 0px 10px 16px;margin-bottom:-2px;width:100%;text-align:left;background-color:#304047;color:#d5ffff\">Java<\/span><span role=\"button\" tabindex=\"0\" style=\"color:#EEFFFF;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>\/\/ \u6307\u5b9a\u306e\u8981\u7d20\u306e\u307f\u524a\u9664\nlist.remove(0);\n\n\/\/ \u5168\u3066\u306e\u8981\u7d20\u3092\u524a\u9664\nlist.clear();<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M4.5 12.75l6 6 9-13.5\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M16.5 8.25V6a2.25 2.25 0 00-2.25-2.25H6A2.25 2.25 0 003.75 6v8.25A2.25 2.25 0 006 16.5h2.25m8.25-8.25H18a2.25 2.25 0 012.25 2.25V18A2.25 2.25 0 0118 20.25h-7.5A2.25 2.25 0 018.25 18v-1.5m8.25-8.25h-6a2.25 2.25 0 00-2.25 2.25v6\"><\/path><\/svg><\/span><pre class=\"shiki material-theme\" style=\"background-color: #263238\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #546E7A; font-style: italic\">\/\/ \u6307\u5b9a\u306e\u8981\u7d20\u306e\u307f\u524a\u9664<\/span><\/span>\n<span class=\"line\"><span style=\"color: #EEFFFF\">list<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">remove<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #F78C6C\">0<\/span><span style=\"color: #89DDFF\">);<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #546E7A; font-style: italic\">\/\/ \u5168\u3066\u306e\u8981\u7d20\u3092\u524a\u9664<\/span><\/span>\n<span class=\"line\"><span style=\"color: #EEFFFF\">list<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">clear<\/span><span style=\"color: #89DDFF\">();<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<h3 id=\"outline__4_4\" class=\"wp-block-heading\">size\u3001contains\u3067\u30ea\u30b9\u30c8\u306e\u72b6\u614b\u3092\u78ba\u8a8d\u3059\u308b<\/h3>\n\n\n\n<p>size\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u5bfe\u8c61\u306e\u30ea\u30b9\u30c8\u306e\u8981\u7d20\u6570\u3092\u53d6\u5f97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono-NL.ttf\" style=\"font-size:clamp(14px, .875rem, 21px);font-family:Code-Pro-JetBrains-Mono-NL,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:clamp(20px, 1.25rem, 30px);--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:10px 0px 10px 16px;margin-bottom:-2px;width:100%;text-align:left;background-color:#304047;color:#d5ffff\">Java<\/span><span role=\"button\" tabindex=\"0\" style=\"color:#EEFFFF;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>int size = list.size();<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M4.5 12.75l6 6 9-13.5\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M16.5 8.25V6a2.25 2.25 0 00-2.25-2.25H6A2.25 2.25 0 003.75 6v8.25A2.25 2.25 0 006 16.5h2.25m8.25-8.25H18a2.25 2.25 0 012.25 2.25V18A2.25 2.25 0 0118 20.25h-7.5A2.25 2.25 0 018.25 18v-1.5m8.25-8.25h-6a2.25 2.25 0 00-2.25 2.25v6\"><\/path><\/svg><\/span><pre class=\"shiki material-theme\" style=\"background-color: #263238\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #C792EA\">int<\/span><span style=\"color: #EEFFFF\"> size <\/span><span style=\"color: #89DDFF\">=<\/span><span style=\"color: #EEFFFF\"> list<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">size<\/span><span style=\"color: #89DDFF\">();<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>\u307e\u305f\u3001contains\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u5bfe\u8c61\u306e\u8981\u7d20\u304c\u30ea\u30b9\u30c8\u306b\u542b\u307e\u308c\u3066\u3044\u308b\u304b\u3092\u691c\u7d22\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono-NL.ttf\" style=\"font-size:clamp(14px, .875rem, 21px);font-family:Code-Pro-JetBrains-Mono-NL,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:clamp(20px, 1.25rem, 30px);--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:10px 0px 10px 16px;margin-bottom:-2px;width:100%;text-align:left;background-color:#304047;color:#d5ffff\">Java<\/span><span role=\"button\" tabindex=\"0\" style=\"color:#EEFFFF;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>boolean exists = list.contains(\"A\");<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M4.5 12.75l6 6 9-13.5\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M16.5 8.25V6a2.25 2.25 0 00-2.25-2.25H6A2.25 2.25 0 003.75 6v8.25A2.25 2.25 0 006 16.5h2.25m8.25-8.25H18a2.25 2.25 0 012.25 2.25V18A2.25 2.25 0 0118 20.25h-7.5A2.25 2.25 0 018.25 18v-1.5m8.25-8.25h-6a2.25 2.25 0 00-2.25 2.25v6\"><\/path><\/svg><\/span><pre class=\"shiki material-theme\" style=\"background-color: #263238\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #C792EA\">boolean<\/span><span style=\"color: #EEFFFF\"> exists <\/span><span style=\"color: #89DDFF\">=<\/span><span style=\"color: #EEFFFF\"> list<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">contains<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">A<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<h2 id=\"outline__5\" class=\"wp-block-heading\">List\u306e\u4e26\u3073\u66ff\u3048\u65b9\u6cd5<\/h2>\n\n\n\n<p>sort\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30ea\u30b9\u30c8\u5185\u306e\u8981\u7d20\u3092\u4e26\u3079\u66ff\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<br>\u30e1\u30bd\u30c3\u30c9\u306e\u5f15\u6570\u306b\u6e21\u3059\u5185\u5bb9\u306b\u3088\u3063\u3066\u3001\u6607\u9806\u3068\u964d\u9806\u3092\u5909\u66f4\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<h3 id=\"outline__5_1\" class=\"wp-block-heading\">\u6607\u9806\u306b\u4e26\u3073\u66ff\u3048\u308b\u5834\u5408<\/h3>\n\n\n\n<p>\u8981\u7d20\u3092\u6607\u9806\u306b\u4e26\u3073\u66ff\u3048\u308b\u5834\u5408\u306f\u3001\u5f15\u6570\u306bComparator.naturalOrder() \u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono-NL.ttf\" style=\"font-size:clamp(14px, .875rem, 21px);font-family:Code-Pro-JetBrains-Mono-NL,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:clamp(20px, 1.25rem, 30px);--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:10px 0px 10px 16px;margin-bottom:-2px;width:100%;text-align:left;background-color:#304047;color:#d5ffff\">Java<\/span><span role=\"button\" tabindex=\"0\" style=\"color:#EEFFFF;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>List&lt;String> list = new ArrayList&lt;>(List.of(\"A\", \"D\", \"C\", \"B\"));\nlist.sort(Comparator.naturalOrder());<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M4.5 12.75l6 6 9-13.5\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M16.5 8.25V6a2.25 2.25 0 00-2.25-2.25H6A2.25 2.25 0 003.75 6v8.25A2.25 2.25 0 006 16.5h2.25m8.25-8.25H18a2.25 2.25 0 012.25 2.25V18A2.25 2.25 0 0118 20.25h-7.5A2.25 2.25 0 018.25 18v-1.5m8.25-8.25h-6a2.25 2.25 0 00-2.25 2.25v6\"><\/path><\/svg><\/span><pre class=\"shiki material-theme\" style=\"background-color: #263238\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #C792EA\">List<\/span><span style=\"color: #89DDFF\">&lt;<\/span><span style=\"color: #C792EA\">String<\/span><span style=\"color: #89DDFF\">&gt;<\/span><span style=\"color: #EEFFFF\"> list <\/span><span style=\"color: #89DDFF\">=<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF; font-style: italic\">new<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #C792EA\">ArrayList<\/span><span style=\"color: #89DDFF\">&lt;&gt;(<\/span><span style=\"color: #EEFFFF\">List<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">of<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">A<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">,<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">D<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">,<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">C<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">,<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">B<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">));<\/span><\/span>\n<span class=\"line\"><span style=\"color: #EEFFFF\">list<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">sort<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #EEFFFF\">Comparator<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">naturalOrder<\/span><span style=\"color: #89DDFF\">());<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono-NL.ttf\" style=\"font-size:clamp(14px, .875rem, 21px);font-family:Code-Pro-JetBrains-Mono-NL,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:clamp(20px, 1.25rem, 30px);--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:10px 0px 10px 16px;margin-bottom:-2px;width:100%;text-align:left;background-color:#304047;color:#d5ffff\">\u5b9f\u884c\u7d50\u679c<\/span><span role=\"button\" tabindex=\"0\" style=\"color:#EEFFFF;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>&#91;A, B, C, D&#93;<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M4.5 12.75l6 6 9-13.5\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M16.5 8.25V6a2.25 2.25 0 00-2.25-2.25H6A2.25 2.25 0 003.75 6v8.25A2.25 2.25 0 006 16.5h2.25m8.25-8.25H18a2.25 2.25 0 012.25 2.25V18A2.25 2.25 0 0118 20.25h-7.5A2.25 2.25 0 018.25 18v-1.5m8.25-8.25h-6a2.25 2.25 0 00-2.25 2.25v6\"><\/path><\/svg><\/span><pre class=\"shiki material-theme\" style=\"background-color: #263238\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #EEFFFF\">&#91;A, B, C, D&#93;<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<h3 id=\"outline__5_2\" class=\"wp-block-heading\">\u964d\u9806\u306b\u4e26\u3073\u66ff\u3048\u308b\u5834\u5408<\/h3>\n\n\n\n<p>\u964d\u9806\u306b\u4e26\u3073\u66ff\u3048\u308b\u5834\u5408\u306f\u3001\u5f15\u6570\u306bComparator. reverseOrder() \u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono-NL.ttf\" style=\"font-size:clamp(14px, .875rem, 21px);font-family:Code-Pro-JetBrains-Mono-NL,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:clamp(20px, 1.25rem, 30px);--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:10px 0px 10px 16px;margin-bottom:-2px;width:100%;text-align:left;background-color:#304047;color:#d5ffff\">Java<\/span><span role=\"button\" tabindex=\"0\" style=\"color:#EEFFFF;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>List&lt;String> list = new ArrayList&lt;>(List.of(\"A\", \"D\", \"C\", \"B\"));\nlist.sort(Comparator.reverseOrder());<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M4.5 12.75l6 6 9-13.5\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M16.5 8.25V6a2.25 2.25 0 00-2.25-2.25H6A2.25 2.25 0 003.75 6v8.25A2.25 2.25 0 006 16.5h2.25m8.25-8.25H18a2.25 2.25 0 012.25 2.25V18A2.25 2.25 0 0118 20.25h-7.5A2.25 2.25 0 018.25 18v-1.5m8.25-8.25h-6a2.25 2.25 0 00-2.25 2.25v6\"><\/path><\/svg><\/span><pre class=\"shiki material-theme\" style=\"background-color: #263238\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #C792EA\">List<\/span><span style=\"color: #89DDFF\">&lt;<\/span><span style=\"color: #C792EA\">String<\/span><span style=\"color: #89DDFF\">&gt;<\/span><span style=\"color: #EEFFFF\"> list <\/span><span style=\"color: #89DDFF\">=<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF; font-style: italic\">new<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #C792EA\">ArrayList<\/span><span style=\"color: #89DDFF\">&lt;&gt;(<\/span><span style=\"color: #EEFFFF\">List<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">of<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">A<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">,<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">D<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">,<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">C<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">,<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">B<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">));<\/span><\/span>\n<span class=\"line\"><span style=\"color: #EEFFFF\">list<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">sort<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #EEFFFF\">Comparator<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">reverseOrder<\/span><span style=\"color: #89DDFF\">());<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono-NL.ttf\" style=\"font-size:clamp(14px, .875rem, 21px);font-family:Code-Pro-JetBrains-Mono-NL,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:clamp(20px, 1.25rem, 30px);--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:10px 0px 10px 16px;margin-bottom:-2px;width:100%;text-align:left;background-color:#304047;color:#d5ffff\">\u5b9f\u884c\u7d50\u679c<\/span><span role=\"button\" tabindex=\"0\" style=\"color:#EEFFFF;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>&#91;D, C, B, A&#93;<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M4.5 12.75l6 6 9-13.5\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M16.5 8.25V6a2.25 2.25 0 00-2.25-2.25H6A2.25 2.25 0 003.75 6v8.25A2.25 2.25 0 006 16.5h2.25m8.25-8.25H18a2.25 2.25 0 012.25 2.25V18A2.25 2.25 0 0118 20.25h-7.5A2.25 2.25 0 018.25 18v-1.5m8.25-8.25h-6a2.25 2.25 0 00-2.25 2.25v6\"><\/path><\/svg><\/span><pre class=\"shiki material-theme\" style=\"background-color: #263238\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #EEFFFF\">&#91;D, C, B, A&#93;<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<h2 id=\"outline__6\" class=\"wp-block-heading\">List\u306e\u53cd\u5fa9\u51e6\u7406<\/h2>\n\n\n\n<p>\u30ea\u30b9\u30c8\u5185\u306e\u5404\u8981\u7d20\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u5834\u5408\u306f\u3001\u30eb\u30fc\u30d7\u51e6\u7406\u3092\u4f7f\u7528\u3059\u308b\u3068\u4fbf\u5229\u3067\u3059\u3002<\/p>\n\n\n\n<h3 id=\"outline__6_1\" class=\"wp-block-heading\">for\u6587\u3067\u7e70\u308a\u8fd4\u3059<\/h3>\n\n\n\n<p>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u304c\u5fc5\u8981\u306a\u5834\u5408\u306f\u3001for\u6587\u3092\u6d3b\u7528\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono-NL.ttf\" style=\"font-size:clamp(14px, .875rem, 21px);font-family:Code-Pro-JetBrains-Mono-NL,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:clamp(20px, 1.25rem, 30px);--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:10px 0px 10px 16px;margin-bottom:-2px;width:100%;text-align:left;background-color:#304047;color:#d5ffff\">Java<\/span><span role=\"button\" tabindex=\"0\" style=\"color:#EEFFFF;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>List&lt;String> list = new ArrayList&lt;>(List.of(\"A\", \"B\", \"C\"));\n\nfor (int i = 0; i &lt; list.size(); i++) {\n    System.out.println(list.get(i));\n}<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M4.5 12.75l6 6 9-13.5\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M16.5 8.25V6a2.25 2.25 0 00-2.25-2.25H6A2.25 2.25 0 003.75 6v8.25A2.25 2.25 0 006 16.5h2.25m8.25-8.25H18a2.25 2.25 0 012.25 2.25V18A2.25 2.25 0 0118 20.25h-7.5A2.25 2.25 0 018.25 18v-1.5m8.25-8.25h-6a2.25 2.25 0 00-2.25 2.25v6\"><\/path><\/svg><\/span><pre class=\"shiki material-theme\" style=\"background-color: #263238\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #C792EA\">List<\/span><span style=\"color: #89DDFF\">&lt;<\/span><span style=\"color: #C792EA\">String<\/span><span style=\"color: #89DDFF\">&gt;<\/span><span style=\"color: #EEFFFF\"> list <\/span><span style=\"color: #89DDFF\">=<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF; font-style: italic\">new<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #C792EA\">ArrayList<\/span><span style=\"color: #89DDFF\">&lt;&gt;(<\/span><span style=\"color: #EEFFFF\">List<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">of<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">A<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">,<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">B<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">,<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">C<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">));<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #89DDFF; font-style: italic\">for<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #C792EA\">int<\/span><span style=\"color: #EEFFFF\"> i <\/span><span style=\"color: #89DDFF\">=<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #F78C6C\">0<\/span><span style=\"color: #89DDFF\">;<\/span><span style=\"color: #EEFFFF\"> i <\/span><span style=\"color: #89DDFF\">&lt;<\/span><span style=\"color: #EEFFFF\"> list<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">size<\/span><span style=\"color: #89DDFF\">();<\/span><span style=\"color: #EEFFFF\"> i<\/span><span style=\"color: #89DDFF\">++)<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #EEFFFF\">    System<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #EEFFFF\">out<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">println<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #EEFFFF\">list<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">get<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #EEFFFF\">i<\/span><span style=\"color: #89DDFF\">));<\/span><\/span>\n<span class=\"line\"><span style=\"color: #89DDFF\">}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>\u6761\u4ef6\u6307\u5b9a\u306bsize\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30eb\u30fc\u30d7\u56de\u6570\u3092\u52d5\u7684\u306b\u5909\u66f4\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"outline__6_2\" class=\"wp-block-heading\">forEach\u30e1\u30bd\u30c3\u30c9\u3067\u7e70\u308a\u8fd4\u3059<\/h3>\n\n\n\n<p>\u30b1\u30fc\u30b9\u306b\u3088\u3063\u3066\u306f\u3001forEach\u30e1\u30bd\u30c3\u30c9\u3068\u30e9\u30e0\u30c0\u5f0f\u3092\u5229\u7528\u3057\u3066\u3001\u3088\u308a\u7c21\u6f54\u306b\u30b3\u30fc\u30c9\u3092\u8a18\u8ff0\u3067\u304d\u308b\u5834\u5408\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono-NL.ttf\" style=\"font-size:clamp(14px, .875rem, 21px);font-family:Code-Pro-JetBrains-Mono-NL,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:clamp(20px, 1.25rem, 30px);--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:10px 0px 10px 16px;margin-bottom:-2px;width:100%;text-align:left;background-color:#304047;color:#d5ffff\">Java<\/span><span role=\"button\" tabindex=\"0\" style=\"color:#EEFFFF;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>list.forEach(val -> System.out.println(val));<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M4.5 12.75l6 6 9-13.5\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M16.5 8.25V6a2.25 2.25 0 00-2.25-2.25H6A2.25 2.25 0 003.75 6v8.25A2.25 2.25 0 006 16.5h2.25m8.25-8.25H18a2.25 2.25 0 012.25 2.25V18A2.25 2.25 0 0118 20.25h-7.5A2.25 2.25 0 018.25 18v-1.5m8.25-8.25h-6a2.25 2.25 0 00-2.25 2.25v6\"><\/path><\/svg><\/span><pre class=\"shiki material-theme\" style=\"background-color: #263238\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #EEFFFF\">list<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">forEach<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #EEFFFF\">val <\/span><span style=\"color: #C792EA\">-&gt;<\/span><span style=\"color: #EEFFFF\"> System<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #EEFFFF\">out<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">println<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #EEFFFF\">val<\/span><span style=\"color: #89DDFF\">));<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<h3 id=\"outline__6_3\" class=\"wp-block-heading\">Stream API\u3092\u6d3b\u7528\u3057\u3066\u3001\u8907\u96d1\u306a\u30c7\u30fc\u30bf\u3092\u52a0\u5de5\u3059\u308b<\/h3>\n\n\n\n<p>Stream API\u3092\u6d3b\u7528\u3059\u308b\u3068\u3001\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3084\u5909\u63db\u51e6\u7406\u306a\u3069\u306e\u8907\u96d1\u306a\u30c7\u30fc\u30bf\u51e6\u7406\u3082\u7c21\u5358\u306b\u5b9f\u884c\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono-NL.ttf\" style=\"font-size:clamp(14px, .875rem, 21px);font-family:Code-Pro-JetBrains-Mono-NL,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:clamp(20px, 1.25rem, 30px);--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:10px 0px 10px 16px;margin-bottom:-2px;width:100%;text-align:left;background-color:#304047;color:#d5ffff\">Java<\/span><span role=\"button\" tabindex=\"0\" style=\"color:#EEFFFF;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>List&lt;String> list = new ArrayList&lt;>(List.of(\"Alice\", \"Bella\", \"Casey\", \"Aimee\"));\n\nlist.stream()\n    .filter(s -> s.startsWith(\"A\"))\n    .forEach(val -> System.out.println(val));<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M4.5 12.75l6 6 9-13.5\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M16.5 8.25V6a2.25 2.25 0 00-2.25-2.25H6A2.25 2.25 0 003.75 6v8.25A2.25 2.25 0 006 16.5h2.25m8.25-8.25H18a2.25 2.25 0 012.25 2.25V18A2.25 2.25 0 0118 20.25h-7.5A2.25 2.25 0 018.25 18v-1.5m8.25-8.25h-6a2.25 2.25 0 00-2.25 2.25v6\"><\/path><\/svg><\/span><pre class=\"shiki material-theme\" style=\"background-color: #263238\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #C792EA\">List<\/span><span style=\"color: #89DDFF\">&lt;<\/span><span style=\"color: #C792EA\">String<\/span><span style=\"color: #89DDFF\">&gt;<\/span><span style=\"color: #EEFFFF\"> list <\/span><span style=\"color: #89DDFF\">=<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF; font-style: italic\">new<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #C792EA\">ArrayList<\/span><span style=\"color: #89DDFF\">&lt;&gt;(<\/span><span style=\"color: #EEFFFF\">List<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">of<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">Alice<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">,<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">Bella<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">,<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">Casey<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">,<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">Aimee<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">));<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #EEFFFF\">list<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">stream<\/span><span style=\"color: #89DDFF\">()<\/span><\/span>\n<span class=\"line\"><span style=\"color: #EEFFFF\">    <\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">filter<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #EEFFFF\">s <\/span><span style=\"color: #C792EA\">-&gt;<\/span><span style=\"color: #EEFFFF\"> s<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">startsWith<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">A<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">))<\/span><\/span>\n<span class=\"line\"><span style=\"color: #EEFFFF\">    <\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">forEach<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #EEFFFF\">val <\/span><span style=\"color: #C792EA\">-&gt;<\/span><span style=\"color: #EEFFFF\"> System<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #EEFFFF\">out<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">println<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #EEFFFF\">val<\/span><span style=\"color: #89DDFF\">));<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono-NL.ttf\" style=\"font-size:clamp(14px, .875rem, 21px);font-family:Code-Pro-JetBrains-Mono-NL,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:clamp(20px, 1.25rem, 30px);--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:10px 0px 10px 16px;margin-bottom:-2px;width:100%;text-align:left;background-color:#304047;color:#d5ffff\">\u5b9f\u884c\u7d50\u679c<\/span><span role=\"button\" tabindex=\"0\" style=\"color:#EEFFFF;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>Alice\nAimee<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M4.5 12.75l6 6 9-13.5\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M16.5 8.25V6a2.25 2.25 0 00-2.25-2.25H6A2.25 2.25 0 003.75 6v8.25A2.25 2.25 0 006 16.5h2.25m8.25-8.25H18a2.25 2.25 0 012.25 2.25V18A2.25 2.25 0 0118 20.25h-7.5A2.25 2.25 0 018.25 18v-1.5m8.25-8.25h-6a2.25 2.25 0 00-2.25 2.25v6\"><\/path><\/svg><\/span><pre class=\"shiki material-theme\" style=\"background-color: #263238\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #EEFFFF\">Alice<\/span><\/span>\n<span class=\"line\"><span style=\"color: #EEFFFF\">Aimee<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<h2 id=\"outline__7\" class=\"wp-block-heading\">\u307e\u3068\u3081<\/h2>\n\n\n\n<p>\u3044\u304b\u304c\u3067\u3057\u305f\u304b\uff1f\u4eca\u56de\u306f\u3001Java\u3067 List\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>List\u306f\u3001\u5b9f\u969b\u306e\u958b\u767a\u3067\u3082\u983b\u7e41\u306b\u5229\u7528\u3055\u308c\u308b\u91cd\u8981\u306a\u6a5f\u80fd\u306e1\u3064\u3067\u3059\u3002<br>\u5404\u30af\u30e9\u30b9\u306e\u7279\u5fb4\u3084\u4f7f\u3044\u65b9\u3092\u3057\u3063\u304b\u308a\u3068\u628a\u63e1\u3057\u3066\u3001\u5b9f\u52d9\u3067\u3082\u6d3b\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u7fd2\u5f97\u3057\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 id=\"outline__8\" class=\"wp-block-heading\">Java\u306e\u52c9\u5f37\u65b9\u6cd5\u306f\uff1f<\/h2>\n\n\n<p>\u66f8\u7c4d\u3084\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3067\u5b66\u7fd2\u3059\u308b\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002\u6628\u4eca\u3067\u306f\u3001YouTube\u306a\u3069\u306e\u52d5\u753b\u30b5\u30a4\u30c8\u3084\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u30b5\u30a4\u30c8\u306a\u3069\u3082\u5145\u5b9f\u3057\u3066\u3044\u3066\u591a\u304f\u306e\u60c5\u5831\u304c\u624b\u306b\u5165\u308a\u307e\u3059\u3002<br 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