{"id":10370,"date":"2026-04-09T16:45:17","date_gmt":"2026-04-09T07:45:17","guid":{"rendered":"https:\/\/techmania.jp\/blog\/?p=10370"},"modified":"2026-04-09T16:45:18","modified_gmt":"2026-04-09T07:45:18","slug":"java-map","status":"publish","type":"post","link":"https:\/\/techmania.jp\/blog\/java-map\/","title":{"rendered":"\u3010Java\u5165\u9580\u3011Map\u306e\u4f7f\u3044\u65b9\u3092\u7dcf\u307e\u3068\u3081\uff01\u521d\u671f\u5316\u30fb\u30eb\u30fc\u30d7\u51e6\u7406\u30fb\u5b9f\u88c5\u30af\u30e9\u30b9\u306e\u9078\u3073\u65b9"},"content":{"rendered":"\n<p>Java\u3067\u3001\u8907\u6570\u306e\u30c7\u30fc\u30bf\u3092\u307e\u3068\u3081\u3066\u6271\u3044\u305f\u3044\u30b1\u30fc\u30b9\u304c\u767a\u751f\u3057\u305f\u969b\u306b\u3001\u4f7f\u7528\u3067\u304d\u308b\u65b9\u6cd5\u306f\u3044\u304f\u3064\u304b\u5b58\u5728\u3057\u307e\u3059\u3002<br>\u305d\u306e\u4e2d\u3067\u3082\u3001\u7279\u5b9a\u306e\u9805\u76ee\u3054\u3068\u306b\u95a2\u9023\u3059\u308b\u30c7\u30fc\u30bf\u3092\u7d10\u4ed8\u3051\u3066\u7ba1\u7406\u3057\u305f\u3044\u5834\u5408\u306b\u4fbf\u5229\u306a\u306e\u304c\u3001Map\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4eca\u56de\u306f\u3001Java\u306e Map\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u3001\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\">Map\u3068\u306f\uff1f<\/h2>\n\n\n\n<p>Map\u306f\u3001Java\u3067\u4f7f\u7528\u53ef\u80fd\u306a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\uff11\u3064\u3067\u3042\u308a\u3001\u8907\u6570\u306e\u30c7\u30fc\u30bf\u3092\u4e00\u584a\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u3057\u3066\u7ba1\u7406\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u6a5f\u80fd\u306e\u3053\u3068\u3092\u8a00\u3044\u307e\u3059\u3002<br>\u540c\u3058\u304f\u30c7\u30fc\u30bf\u96c6\u5408\u3092\u6271\u3046\u4ee3\u8868\u7684\u306a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306b List\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u5404\u30c7\u30fc\u30bf\u3092\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3067\u7ba1\u7406\u3059\u308b List\u3068\u306f\u7570\u306a\u308a\u3001\u30ad\u30fc (Key) \u3068\u5024 (value) \u306e\u7d44\u307f\u5408\u308f\u305b\u306b\u3088\u3063\u3066\u7ba1\u7406\u3059\u308b\u306e\u304c Map\u306e\u5927\u304d\u306a\u7279\u5fb4\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u308c\u305e\u308c\u306e\u30c7\u30fc\u30bf\u306b\u7d10\u4ed8\u3051\u308b\u30ad\u30fc\u306f\u91cd\u8907\u4e0d\u53ef\u3068\u306a\u3063\u3066\u3044\u308b (\u4e00\u610f\u3067\u3042\u308b) \u305f\u3081\u3001\u7279\u5b9a\u306e\u9805\u76ee\u3054\u3068\u306b\u95a2\u9023\u3059\u308b\u30c7\u30fc\u30bf\u3092\u683c\u7d0d\u3057\u305f\u3044\u5834\u5408\u306b\u6d3b\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<br>Map\u3092\u5b9f\u969b\u306b\u4f7f\u7528\u3059\u308b\u969b\u306f\u3001\u5b9f\u88c5\u30af\u30e9\u30b9\u3067\u3042\u308b HashMap \u306a\u3069\u3092\u5229\u7528\u3057\u3066\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"outline__2\" class=\"wp-block-heading\">\u4e3b\u8981\u306aMap\u5b9f\u88c5\u30af\u30e9\u30b9\u306e\u7279\u5fb4<\/h2>\n\n\n\n<p>Map\u306e\u4e3b\u306a\u5b9f\u88c5\u30af\u30e9\u30b9\u306b\u306f\u3001\u4ee5\u4e0b\u306e3\u3064\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>HashMap<\/li>\n\n\n\n<li>TreeMap<\/li>\n\n\n\n<li>LinkedHashMap<\/li>\n<\/ul>\n\n\n\n<p>\u305d\u308c\u305e\u308c\u306e\u7279\u5fb4\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"outline__2_1\" class=\"wp-block-heading\">\u9ad8\u901f\u306a\u691c\u7d22\u304c\u53ef\u80fd\u306aHashMap<\/h3>\n\n\n\n<p>HashMap\u306f\u3001\u6700\u3082\u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u5b9f\u88c5\u30af\u30e9\u30b9\u3067\u3059\u3002<br>\u30ad\u30fc\u3092\u30cf\u30c3\u30b7\u30e5\u5024\u306b\u5909\u63db\u3057\u3066\u30c7\u30fc\u30bf\u7ba1\u7406\u3059\u308b\u3053\u3068\u306b\u3088\u308a\u3001\u9ad8\u901f\u306a\u30a2\u30af\u30bb\u30b9\u3092\u5b9f\u73fe\u3057\u3066\u3044\u308b\u306e\u304c\u4e3b\u306a\u7279\u5fb4\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u683c\u7d0d\u3057\u305f\u8981\u7d20\u306e\u9806\u5e8f\u4ed8\u3051\u306f\u3055\u308c\u306a\u3044\u305f\u3081\u3001\u8ffd\u52a0\u9806\u3084\u30bd\u30fc\u30c8\u9806\u306a\u3069\u3001\u8981\u7d20\u306e\u4e26\u3073\u9806\u3092\u610f\u8b58\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u306f\u3001\u5f8c\u8ff0\u3059\u308b\u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<br>\u307e\u305f\u3001\u30ad\u30fc\u306b null\u30921\u3064\u3060\u3051\u8a31\u5bb9\u3059\u308b\u70b9\u3082 HashMap\u306e\u7279\u5fb4\u306e1\u3064\u3067\u3059\u3002<\/p>\n\n\n\n<h3 id=\"outline__2_2\" class=\"wp-block-heading\">\u30ad\u30fc\u3092\u81ea\u52d5\u30bd\u30fc\u30c8\u3057\u3066\u4fdd\u6301\u3059\u308bTreeMap<\/h3>\n\n\n\n<p>TreeMap\u306f\u3001\u30ad\u30fc\u3092\u81ea\u7136\u9806\u3001\u307e\u305f\u306f\u6307\u5b9a\u306e\u6bd4\u8f03\u65b9\u6cd5\u306b\u3088\u3063\u3066\u81ea\u52d5\u7684\u306b\u30bd\u30fc\u30c8\u3059\u308b\u5b9f\u88c5\u30af\u30e9\u30b9\u3067\u3059\u3002<br>\u5185\u90e8\u69cb\u9020\u306b\u30c4\u30ea\u30fc\u30de\u30c3\u30d7\u3092\u63a1\u7528\u3057\u3066\u304a\u308a\u3001\u7279\u5b9a\u306e\u6761\u4ef6\u306b\u6cbf\u3063\u3066\u5e38\u306b\u30ad\u30fc\u304c\u6574\u5217\u3055\u308c\u3066\u3044\u308b\u72b6\u614b\u3092\u7dad\u6301\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30ad\u30fc\u306e\u4e26\u3073\u9806\u304c\u91cd\u8981\u306a\u5834\u5408\u3084\u3001\u7bc4\u56f2\u691c\u7d22\u3092\u884c\u3044\u305f\u3044\u5834\u5408\u306a\u3069\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u304c\u3001HashMap\u3068\u6bd4\u3079\u308b\u3068\u51e6\u7406\u901f\u5ea6\u306f\u3084\u3084\u9045\u304f\u306a\u308b\u50be\u5411\u306b\u3042\u308a\u307e\u3059\u3002<br>\u305d\u306e\u305f\u3081\u3001\u4e26\u3073\u9806\u306b\u91cd\u8981\u6027\u306f\u306a\u304f\u3001\u51e6\u7406\u901f\u5ea6\u3092\u91cd\u8996\u3059\u308b\u5834\u5408\u306b\u306f\u3001HashMap\u306e\u65b9\u304c\u4f7f\u7528\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"outline__2_3\" class=\"wp-block-heading\">\u633f\u5165\u9806\u3092\u7dad\u6301\u3059\u308bLinkedHashMap<\/h3>\n\n\n\n<p>LinkedHashMap\u306f\u3001HashMap\u306e\u57fa\u672c\u7684\u306a\u7279\u6027\u3092\u6301\u3061\u3064\u3064\u3001\u8981\u7d20\u306e\u633f\u5165\u9806\u3092\u7dad\u6301\u3059\u308b\u5b9f\u88c5\u30af\u30e9\u30b9\u3067\u3059\u3002<br>\u5404\u8981\u7d20\u3092\u30ea\u30f3\u30af\u3057\u3066\u7e4b\u3052\u308b\u3053\u3068\u306b\u3088\u308a\u3001\u8ffd\u52a0\u3055\u308c\u305f\u9806\u5e8f\u306b\u6cbf\u3063\u3066\u30c7\u30fc\u30bf\u3092\u53d6\u308a\u51fa\u3059\u3053\u3068\u3092\u53ef\u80fd\u3068\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4f8b\u3048\u3070\u30ad\u30e3\u30c3\u30b7\u30e5\u306a\u3069\u3001\u30c7\u30fc\u30bf\u306e\u4fdd\u5b58\u9806\u3092\u91cd\u8981\u8996\u3059\u308b\u5834\u9762\u3067\u306e\u4f7f\u7528\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<br>\u8981\u7d20\u306e\u9806\u5e8f\u3092\u4fdd\u3061\u3064\u3064\u3001\u9ad8\u901f\u51e6\u7406\u3092\u884c\u3044\u305f\u3044\u5834\u5408\u306b\u6709\u52b9\u3067\u3059\u3002<\/p>\n\n\n\n<h2 id=\"outline__3\" class=\"wp-block-heading\">Map\u3092\u521d\u671f\u5316\u3059\u308b<\/h2>\n\n\n\n<p>Map\u3092\u521d\u671f\u5316\u3059\u308b\u65b9\u6cd5\u306f\u3001\u4e3b\u306b\uff12\u901a\u308a\u3042\u308a\u307e\u3059\u3002<br>\u305d\u308c\u305e\u308c\u78ba\u8a8d\u3057\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 id=\"outline__3_1\" class=\"wp-block-heading\">new HashMap\u3067\u30de\u30c3\u30d7\u3092\u4f5c\u6210\u3059\u308b<\/h3>\n\n\n\n<p>\u57fa\u672c\u7684\u306a\u521d\u671f\u5316\u65b9\u6cd5\u306f\u3001new\u6f14\u7b97\u5b50\u3092\u4f7f\u7528\u3057\u3066\u7a7a\u306eMap\u3092\u4f5c\u6210\u3059\u308b\u65b9\u6cd5\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>Map&lt;String, String> map = new HashMap&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\">Map<\/span><span style=\"color: #89DDFF\">&lt;<\/span><span style=\"color: #C792EA\">String<\/span><span style=\"color: #89DDFF\">,<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #C792EA\">String<\/span><span style=\"color: #89DDFF\">&gt;<\/span><span style=\"color: #EEFFFF\"> map <\/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\">HashMap<\/span><span style=\"color: #89DDFF\">&lt;&gt;();<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>\u4f5c\u6210\u3057\u305f\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306b\u3001\u5f8c\u304b\u3089\u5024\u3092\u8ffd\u52a0\u3059\u308b\u5f62\u3067\u4f7f\u7528\u3057\u307e\u3059\u3002<br>\u67d4\u8edf\u6027\u304c\u9ad8\u304f\u3001\u30c7\u30fc\u30bf\u3092\u52d5\u7684\u306b\u6271\u3046\u5834\u5408\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"outline__3_2\" class=\"wp-block-heading\">Map.of()\u3067\u4e0d\u5909\u30de\u30c3\u30d7\u3092\u4f5c\u6210\u3059\u308b<\/h3>\n\n\n\n<p>Map.of() \u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u521d\u671f\u5024\u3092\u6307\u5b9a\u3057\u305f\u72b6\u614b\u3067 Map\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>Map&lt;String, String> map = Map.of(\n    \"name\", \"Taro\",\n    \"job\", \"engineer\"\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\">Map<\/span><span style=\"color: #89DDFF\">&lt;<\/span><span style=\"color: #C792EA\">String<\/span><span style=\"color: #89DDFF\">,<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #C792EA\">String<\/span><span style=\"color: #89DDFF\">&gt;<\/span><span style=\"color: #EEFFFF\"> map <\/span><span style=\"color: #89DDFF\">=<\/span><span style=\"color: #EEFFFF\"> Map<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">of<\/span><span style=\"color: #89DDFF\">(<\/span><\/span>\n<span class=\"line\"><span style=\"color: #EEFFFF\">    <\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">name<\/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\">Taro<\/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\">&quot;<\/span><span style=\"color: #C3E88D\">job<\/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\">engineer<\/span><span style=\"color: #89DDFF\">&quot;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #89DDFF\">);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>Map.of() \u3067\u4f5c\u6210\u3057\u305fMap\u306f\u4e0d\u5909 (\u30a4\u30df\u30e5\u30fc\u30bf\u30d6\u30eb) \u3068\u306a\u308b\u305f\u3081\u3001\u5f8c\u304b\u3089\u8981\u7d20\u306e\u8ffd\u52a0\u30fb\u524a\u9664\u30fb\u5909\u66f4\u3092\u884c\u3046\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002<br>\u305d\u306e\u305f\u3081\u3001\u5b9a\u6570\u30c7\u30fc\u30bf\u3084\u5909\u66f4\u306e\u5fc5\u8981\u304c\u306a\u3044\u8a2d\u5b9a\u5024\u3092\u7ba1\u7406\u3059\u308b\u306e\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"outline__4\" class=\"wp-block-heading\">\u30de\u30c3\u30d7\u306e\u57fa\u672c\u64cd\u4f5c<\/h2>\n\n\n\n<p>Map\u306e\u64cd\u4f5c\u306f\u3001\u65e2\u5b58\u3067\u7528\u610f\u3055\u308c\u3066\u3044\u308b\u69d8\u3005\u306a\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<br>\u30e1\u30bd\u30c3\u30c9\u3054\u3068\u306e\u64cd\u4f5c\u5185\u5bb9\u306b\u3064\u3044\u3066\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 id=\"outline__4_1\" class=\"wp-block-heading\">\u30c7\u30fc\u30bf\u306e\u8ffd\u52a0\uff08put\uff09\u3001\u53d6\u5f97\uff08get\uff09\u3001\u524a\u9664\uff08remove\uff09<\/h3>\n\n\n\n<p>\u30c7\u30fc\u30bf\u3092\u8ffd\u52a0\u3059\u308b\u969b\u306b\u306f\u3001put\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<br>\u5f15\u6570\u306b\u30ad\u30fc\u3068\u5024\u3092\u305d\u308c\u305e\u308c\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u8981\u7d20\u3092\u65b0\u3057\u304f\u8ffd\u52a0\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>Map&lt;String, String> map = new HashMap&lt;>();\nmap.put(\"name\", \"Taro\");\nmap.put(\"job\", \"engineer\");\n\nSystem.out.println(map);<\/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\">Map<\/span><span style=\"color: #89DDFF\">&lt;<\/span><span style=\"color: #C792EA\">String<\/span><span style=\"color: #89DDFF\">,<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #C792EA\">String<\/span><span style=\"color: #89DDFF\">&gt;<\/span><span style=\"color: #EEFFFF\"> map <\/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\">HashMap<\/span><span style=\"color: #89DDFF\">&lt;&gt;();<\/span><\/span>\n<span class=\"line\"><span style=\"color: #EEFFFF\">map<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">put<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">name<\/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\">Taro<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #EEFFFF\">map<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">put<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">job<\/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\">engineer<\/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\">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\">map<\/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>{name=Taro, job=engineer}<\/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\">{name=Taro, job=engineer}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>\u6307\u5b9a\u3057\u305f\u30ad\u30fc\u304c\u65e2\u306b\u5b58\u5728\u3059\u308b\u5834\u5408\u306f\u3001\u5024\u304c\u4e0a\u66f8\u304d\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u8ffd\u52a0\u3057\u305f\u8981\u7d20\u3092\u53d6\u5f97\u3059\u308b\u5834\u5408\u306f\u3001get\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<br>\u5f15\u6570\u306b\u30ad\u30fc\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u5bfe\u5fdc\u3059\u308b\u5024\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>Map&lt;String, String> map = new HashMap&lt;>();\nmap.put(\"name\", \"Taro\");\nmap.put(\"job\", \"engineer\");\n\nString name = map.get(\"name\");\n\nSystem.out.println(name);<\/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\">Map<\/span><span style=\"color: #89DDFF\">&lt;<\/span><span style=\"color: #C792EA\">String<\/span><span style=\"color: #89DDFF\">,<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #C792EA\">String<\/span><span style=\"color: #89DDFF\">&gt;<\/span><span style=\"color: #EEFFFF\"> map <\/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\">HashMap<\/span><span style=\"color: #89DDFF\">&lt;&gt;();<\/span><\/span>\n<span class=\"line\"><span style=\"color: #EEFFFF\">map<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">put<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">name<\/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\">Taro<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #EEFFFF\">map<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">put<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">job<\/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\">engineer<\/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: #C792EA\">String<\/span><span style=\"color: #EEFFFF\"> name <\/span><span style=\"color: #89DDFF\">=<\/span><span style=\"color: #EEFFFF\"> map<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">get<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">name<\/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\">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\">name<\/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>Taro<\/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\">Taro<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>\u5b58\u5728\u3057\u306a\u3044\u30ad\u30fc\u3092\u6307\u5b9a\u3057\u305f\u5834\u5408\u306f null\u304c\u8fd4\u3055\u308c\u308b\u305f\u3081\u3001\u4f7f\u7528\u306e\u969b\u306f null\u306e\u6271\u3044\u306b\u6ce8\u610f\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u65e2\u5b58\u306e\u8981\u7d20\u3092\u524a\u9664\u3057\u305f\u3044\u5834\u5408\u306f\u3001remove\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u6307\u5b9a\u3057\u305f\u30ad\u30fc\u306b\u5bfe\u5fdc\u3059\u308b\u8981\u7d20\u3092\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>Map&lt;String, String> map = new HashMap&lt;>();\nmap.put(\"name\", \"Taro\");\nmap.put(\"job\", \"engineer\");\n\nSystem.out.println(map);\n\nmap.remove(\"job\");\n\nSystem.out.println(map);<\/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\">Map<\/span><span style=\"color: #89DDFF\">&lt;<\/span><span style=\"color: #C792EA\">String<\/span><span style=\"color: #89DDFF\">,<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #C792EA\">String<\/span><span style=\"color: #89DDFF\">&gt;<\/span><span style=\"color: #EEFFFF\"> map <\/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\">HashMap<\/span><span style=\"color: #89DDFF\">&lt;&gt;();<\/span><\/span>\n<span class=\"line\"><span style=\"color: #EEFFFF\">map<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">put<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">name<\/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\">Taro<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #EEFFFF\">map<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">put<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">job<\/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\">engineer<\/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\">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\">map<\/span><span style=\"color: #89DDFF\">);<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #EEFFFF\">map<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">remove<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">job<\/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\">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\">map<\/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>{name=Taro, job=engineer}\n{job=engineer}<\/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\">{name=Taro, job=engineer}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #EEFFFF\">{job=engineer}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<h3 id=\"outline__4_2\" class=\"wp-block-heading\">\u30ad\u30fc\u3084\u5024\u306e\u78ba\u8a8d\uff08containsKey\u3001containsValue\uff09<\/h3>\n\n\n\n<p>\u7279\u5b9a\u306e\u30ad\u30fc\u3084\u5024\u304c\u5b58\u5728\u3059\u308b\u304b\u3092\u78ba\u8a8d\u3057\u305f\u3044\u5834\u5408\u306b\u4f7f\u7528\u3067\u304d\u308b\u306e\u304c\u3001containsKey\u30e1\u30bd\u30c3\u30c9\u3068 containsValue\u30e1\u30bd\u30c3\u30c9\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>Map&lt;String, String> map = new HashMap&lt;>();\nmap.put(\"name\", \"Taro\");\nmap.put(\"job\", \"engineer\");\n\n\/\/ \u30ad\u30fc\u306e\u5b58\u5728\u3092\u78ba\u8a8d\nboolean isKey = map.containsKey(\"name\");\n\n\/\/ \u5024\u306e\u5b58\u5728\u3092\u78ba\u8a8d\nboolean isValue = map.containsValue(\"teacher\");\n\nSystem.out.println(isKey);\nSystem.out.println(isValue);<\/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\">Map<\/span><span style=\"color: #89DDFF\">&lt;<\/span><span style=\"color: #C792EA\">String<\/span><span style=\"color: #89DDFF\">,<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #C792EA\">String<\/span><span style=\"color: #89DDFF\">&gt;<\/span><span style=\"color: #EEFFFF\"> map <\/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\">HashMap<\/span><span style=\"color: #89DDFF\">&lt;&gt;();<\/span><\/span>\n<span class=\"line\"><span style=\"color: #EEFFFF\">map<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">put<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">name<\/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\">Taro<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #EEFFFF\">map<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">put<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">job<\/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\">engineer<\/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\">\/\/ \u30ad\u30fc\u306e\u5b58\u5728\u3092\u78ba\u8a8d<\/span><\/span>\n<span class=\"line\"><span style=\"color: #C792EA\">boolean<\/span><span style=\"color: #EEFFFF\"> isKey <\/span><span style=\"color: #89DDFF\">=<\/span><span style=\"color: #EEFFFF\"> map<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">containsKey<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">name<\/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\">\/\/ \u5024\u306e\u5b58\u5728\u3092\u78ba\u8a8d<\/span><\/span>\n<span class=\"line\"><span style=\"color: #C792EA\">boolean<\/span><span style=\"color: #EEFFFF\"> isValue <\/span><span style=\"color: #89DDFF\">=<\/span><span style=\"color: #EEFFFF\"> map<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">containsValue<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">teacher<\/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\">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\">isKey<\/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\">isValue<\/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>true\nfalse<\/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\">true<\/span><\/span>\n<span class=\"line\"><span style=\"color: #EEFFFF\">false<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>\u7279\u306b\u3001get\u30e1\u30bd\u30c3\u30c9\u3067 null\u304c\u8fd4\u3055\u308c\u305f\u5834\u5408\u306e\u539f\u56e0\u306e\u5224\u5b9a\u306a\u3069\u306b\u6709\u52b9\u7684\u3067\u3059\u3002<br>get\u30e1\u30bd\u30c3\u30c9\u306e\u7d50\u679c\u306e\u307f\u3067\u306f\u3001\u30ad\u30fc\u304c\u5b58\u5728\u3057\u306a\u3044\u306e\u304b\u3001\u5024\u304c null\u306a\u306e\u304b\u306e\u5224\u65ad\u304c\u3064\u304b\u306a\u3044\u305f\u3081\u3001\u4e0a\u8a18\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u5177\u4f53\u7684\u306a\u7406\u7531\u3092\u89e3\u660e\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"outline__4_3\" class=\"wp-block-heading\">forEach\u30e1\u30bd\u30c3\u30c9\u3067\u7c21\u6f54\u306b\u30eb\u30fc\u30d7\u51e6\u7406\u3059\u308b<\/h3>\n\n\n\n<p>\u8907\u6570\u884c\u306b\u6e21\u308b\u3088\u3046\u306a\u8907\u96d1\u306a\u51e6\u7406\u3092\u884c\u308f\u306a\u3044\u5834\u5408\u306b\u306f\u3001forEach\u30e1\u30bd\u30c3\u30c9\u3068\u30e9\u30e0\u30c0\u5f0f\u3092\u7d44\u307f\u5408\u308f\u305b\u305f\u65b9\u6cd5\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u3088\u308a\u7c21\u6f54\u306b\u30b3\u30fc\u30c9\u3092\u8a18\u8ff0\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>Map&lt;String, String> map = new HashMap&lt;>();\nmap.put(\"name\", \"Taro\");\nmap.put(\"job\", \"engineer\");\n\nmap.forEach((key, value) -> System.out.println(key + \"\uff1a\" + value));<\/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\">Map<\/span><span style=\"color: #89DDFF\">&lt;<\/span><span style=\"color: #C792EA\">String<\/span><span style=\"color: #89DDFF\">,<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #C792EA\">String<\/span><span style=\"color: #89DDFF\">&gt;<\/span><span style=\"color: #EEFFFF\"> map <\/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\">HashMap<\/span><span style=\"color: #89DDFF\">&lt;&gt;();<\/span><\/span>\n<span class=\"line\"><span style=\"color: #EEFFFF\">map<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">put<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">name<\/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\">Taro<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #89DDFF\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #EEFFFF\">map<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">put<\/span><span style=\"color: #89DDFF\">(<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">job<\/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\">engineer<\/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\">map<\/span><span style=\"color: #89DDFF\">.<\/span><span style=\"color: #82AAFF\">forEach<\/span><span style=\"color: #89DDFF\">((<\/span><span style=\"color: #EEFFFF\">key<\/span><span style=\"color: #89DDFF\">,<\/span><span style=\"color: #EEFFFF\"> value<\/span><span style=\"color: #89DDFF\">)<\/span><span style=\"color: #EEFFFF\"> <\/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\">key <\/span><span style=\"color: #89DDFF\">+<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #C3E88D\">\uff1a<\/span><span style=\"color: #89DDFF\">&quot;<\/span><span style=\"color: #EEFFFF\"> <\/span><span style=\"color: #89DDFF\">+<\/span><span style=\"color: #EEFFFF\"> value<\/span><span style=\"color: #89DDFF\">));<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>\u51e6\u7406\u5185\u5bb9\u306b\u3088\u3063\u3066\u4f7f\u7528\u53ef\u80fd\u304b\u5426\u304b\u306f\u7570\u306a\u308b\u306e\u3067\u3001\u72b6\u6cc1\u306b\u5408\u308f\u305b\u3066\u9069\u3057\u305f\u65b9\u6cd5\u3067\u8a18\u8ff0\u3059\u308b\u3068\u3044\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 id=\"outline__5\" 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\u306e Map\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u30c7\u30fc\u30bf\u51e6\u7406\u3092\u884c\u3046\u4e0a\u3067\u3001Map\u306f\u3088\u304f\u5229\u7528\u3055\u308c\u308b\u65b9\u6cd5\u306e1\u3064\u3068\u306a\u308b\u305f\u3081\u3001\u4f7f\u3044\u65b9\u3092\u3057\u3063\u304b\u308a\u3068\u628a\u63e1\u3057\u3066\u304a\u304f\u3053\u3068\u304c\u5927\u5207\u3067\u3059\u3002<br>\u305c\u3072\u3053\u306e\u8a18\u4e8b\u3082\u53c2\u8003\u306b\u3057\u306a\u304c\u3089\u3001\u5b9f\u969b\u306b\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u306a\u3069\u3057\u3066\u7406\u89e3\u3092\u6df1\u3081\u3066\u3044\u3063\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h2 id=\"outline__6\" 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 \/>\u305d\u3057\u3066\u3001\u3088\u308a\u52b9\u7387\u7684\u306b\u77e5\u8b58\u30fb\u30b9\u30ad\u30eb\u3092\u7fd2\u5f97\u3059\u308b\u306b\u306f\u3001\u77e5\u8b58\u3092\u3064\u3051\u306a\u304c\u3089\u5b9f\u969b\u306b\u624b\u3092\u52d5\u304b\u3057\u3066\u307f\u308b\u306a\u3069\u3001\u30a4\u30f3\u30d7\u30c3\u30c8\u3068\u30a2\u30a6\u30c8\u30d7\u30c3\u30c8\u3092\u7e70\u308a\u8fd4\u3057\u3066\u3044\u304f\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u7279\u306b\u72ec\u5b66\u306e\u5834\u5408\u306f\u3001\u6709\u8b58\u8005\u306b\u8cea\u554f\u304c\u3067\u304d\u305f\u308a\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u3092\u3082\u3089\u3048\u308b\u3088\u3046\u306a\u74b0\u5883\u304c\u3042\u308b\u3068\u3001\u7406\u89e3\u5ea6\u304c\u6df1\u307e\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n<p>\u305f\u3060\u3001Java\u306b\u9650\u3089\u305a\u3001IT\u30b9\u30ad\u30eb\u3092\u8eab\u306b\u3064\u3051\u308b\u969b\u3001\u3069\u3046\u3057\u3066\u3082\u8ab2\u984c\u306b\u3076\u3064\u304b\u3063\u3066\u3057\u307e\u3046\u3053\u3068\u306f\u3042\u308a\u307e\u3059\u3088\u306d\u3002\u7279\u306b\u72ec\u5b66\u3060\u3068\u3001\u308f\u304b\u3089\u306a\u3044\u90e8\u5206\u3092\u30d7\u30ed\u306b\u8cea\u554f\u3067\u304d\u308b\u6a5f\u4f1a\u3092\u78ba\u4fdd\u3057\u306b\u304f\u304f\u3001\u30e2\u30c1\u30d9\u30fc\u30b7\u30e7\u30f3\u304c\u7d9a\u304d\u306b\u304f\u3044\u3068\u3044\u3046\u5074\u9762\u304c\u3042\u308a\u307e\u3059\u3002\u72ec\u5b66\u3067\u30e2\u30c1\u30d9\u30fc\u30b7\u30e7\u30f3\u3092\u7dad\u6301\u3059\u308b\u81ea\u4fe1\u304c\u306a\u3044\u4eba\u306b\u306f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b9\u30af\u30fc\u30eb\u3068\u3044\u3046\u624b\u3082\u3042\u308a\u307e\u3059\u3002\u8cbb\u7528\u306f\u639b\u304b\u308a\u307e\u3059\u304c\u3001\u305d\u306e\u5206\u30b9\u30ad\u30eb\u3092\u8eab\u306b\u3064\u3051\u3084\u3059\u3044\u3067\u3059\u3002\u3057\u3063\u304b\u308a\u3068\u77e5\u8b58\u30fb\u30b9\u30ad\u30eb\u3092\u7fd2\u5f97\u3057\u3066\u5b9f\u8df5\u306b\u6d3b\u304b\u3057\u305f\u3044\u3068\u3044\u3046\u4eba\u306f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b9\u30af\u30fc\u30eb\u304c\u304a\u3059\u3059\u3081\u3067\u3059\u3002<\/p>\n<p><span class=\"markerYellow\"><strong>\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b9\u30af\u30fc\u30eb\u306a\u3089\u30c6\u30c3\u30af\u30de\u30cb\u30a2\u304c\u304a\u3059\u3059\u3081\uff01<\/strong><\/span><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/yuudou.png\" class=\"post-img\">\n\n\n<p>IT\u30b9\u30ad\u30eb\u9700\u8981\u306e\u9ad8\u307e\u308a\u3068\u3068\u3082\u306b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b9\u30af\u30fc\u30eb\u3082\u5897\u3048\u307e\u3057\u305f\u3002\u3057\u304b\u3057\u3001\u3069\u306e\u30b9\u30af\u30fc\u30eb\u306b\u901a\u3046\u3079\u304d\u304b\u8ff7\u3063\u3066\u3057\u307e\u3046\u4eba\u3082\u3044\u308b\u3067\u3057\u3087\u3046\u3002\u305d\u3093\u306a\u65b9\u306b\u306f\u30c6\u30c3\u30af\u30de\u30cb\u30a2\u3092\u304a\u3059\u3059\u3081\u3057\u307e\u3059\uff01\u3053\u308c\u307e\u3067\u591a\u304f\u306eIT\u30a8\u30f3\u30b8\u30cb\u30a2\u3092\u80b2\u6210\u30fb\u8f29\u51fa\u3057\u3066\u304d\u305f\u30c6\u30c3\u30af\u30de\u30cb\u30a2\u3067\u3082\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b9\u30af\u30fc\u30eb\u3092\u958b\u8b1b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<div class=\"bgBox\">\n<p><strong>\uff1c\u30c6\u30c3\u30af\u30de\u30cb\u30a2\u306e\u7279\u5fb4\uff1e<\/strong><br \/><strong>\u30fb\u305f\u3057\u304b\u306a\u80b2\u6210\u5b9f\u7e3e\u3068\u89aa\u8eab\u306a\u6559\u80b2\u3000\uff5e\u30bb\u30ab\u30f3\u30c9\u30ad\u30e3\u30ea\u30a2\u3092\u5168\u529b\u652f\u63f4\uff5e<\/strong><br \/><strong>\u30fb\u8b1b\u5e2b\u304c\u73fe\u5f79\u30a8\u30f3\u30b8\u30cb\u30a2\u3000\uff5e\u201c\u672c\u5f53\u201d\u306e\u958b\u767a\u30ce\u30a6\u30cf\u30a6\u3092\u76f4\u306b\u5b66\u3079\u308b\uff5e<\/strong><br \/><strong>\u30fb\u5c02\u5c5e\u8b1b\u5e2b\u304c\u5b66\u7fd2\u3092\u5fb9\u5e95\u30b5\u30dd\u30fc\u30c8\u3000\uff5e\u300c\u308f\u304b\u3089\u306a\u3044\u300d\u3092\u5fb9\u5e95\u89e3\u6c7a\uff5e<\/strong><br \/><strong>\u30fb\u5b9f\u52d9\u30d9\u30fc\u30b9\u3067\u30b9\u30ad\u30eb\u3092\u7fd2\u5f97\u3000\uff5e\u5b9f\u8df5\u7684\u306a\u51dd\u7e2e\u30ab\u30ea\u30ad\u30e5\u30e9\u30e0\uff5e<\/strong><\/p>\n<\/div>\n<p>\u3053\u306e\u3088\u3046\u306a\u7279\u5fb4\u3092\u6301\u3064\u30c6\u30c3\u30af\u30de\u30cb\u30a2\u306fIT\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u30b9\u30bf\u30fc\u30c8\u30e9\u30a4\u30f3\u3068\u3057\u3066\u6700\u9069\u3067\u3059\u3002<br \/>\u8a71\u3092\u805e\u304d\u305f\u3044\u30fb\u8a73\u3057\u304f\u77e5\u308a\u305f\u3044\u3068\u3044\u3046\u65b9\u306f<a href=\"https:\/\/techmania.jp\/lp\/2\" target=\"_blank\" rel=\"noopener\">\u3053\u3061\u3089<\/a>\u304b\u3089\u304a\u6c17\u8efd\u306b\u304a\u554f\u3044\u5408\u308f\u305b\u304f\u3060\u3055\u3044\u3002<\/p>","protected":false},"excerpt":{"rendered":"Java\u3067\u3001\u8907\u6570\u306e\u30c7\u30fc\u30bf\u3092\u307e\u3068\u3081\u3066\u6271\u3044\u305f\u3044\u30b1\u30fc\u30b9\u304c\u767a\u751f\u3057\u305f\u969b\u306b\u3001\u4f7f\u7528\u3067\u304d\u308b\u65b9\u6cd5\u306f\u3044\u304f\u3064\u304b\u5b58\u5728\u3057\u307e\u3059\u3002\u305d\u306e\u4e2d\u3067\u3082\u3001\u7279\u5b9a\u306e\u9805\u76ee\u3054\u3068\u306b\u95a2\u9023\u3059\u308b\u30c7\u30fc\u30bf\u3092\u7d10\u4ed8\u3051\u3066\u7ba1\u7406\u3057\u305f\u3044\u5834\u5408\u306b\u4fbf\u5229\u306a\u306e\u304c\u3001Map\u3067\u3059\u3002 \u4eca\u56de\u306f\u3001Java\u306e Map\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u3001\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u304d\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002 Map\u3068\u306f\uff1f Map\u306f\u3001Java\u3067\u4f7f\u7528\u53ef\u80fd\u306a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\uff11\u3064\u3067\u3042\u308a\u3001\u8907\u6570\u306e\u30c7\u30fc\u30bf\u3092\u4e00\u584a\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u3057\u3066\u7ba1\u7406\u3059\u308b [&hellip;]","protected":false},"author":12,"featured_media":10376,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15],"tags":[],"class_list":["post-10370","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-programming"],"_links":{"self":[{"href":"https:\/\/techmania.jp\/blog\/wp-json\/wp\/v2\/posts\/10370","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/techmania.jp\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/techmania.jp\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/techmania.jp\/blog\/wp-json\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/techmania.jp\/blog\/wp-json\/wp\/v2\/comments?post=10370"}],"version-history":[{"count":4,"href":"https:\/\/techmania.jp\/blog\/wp-json\/wp\/v2\/posts\/10370\/revisions"}],"predecessor-version":[{"id":10378,"href":"https:\/\/techmania.jp\/blog\/wp-json\/wp\/v2\/posts\/10370\/revisions\/10378"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/techmania.jp\/blog\/wp-json\/wp\/v2\/media\/10376"}],"wp:attachment":[{"href":"https:\/\/techmania.jp\/blog\/wp-json\/wp\/v2\/media?parent=10370"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/techmania.jp\/blog\/wp-json\/wp\/v2\/categories?post=10370"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/techmania.jp\/blog\/wp-json\/wp\/v2\/tags?post=10370"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}