{"id":118642,"date":"2024-03-23T15:13:19","date_gmt":"2024-03-23T06:13:19","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7map%e3%82%92list%e3%81%ab%e5%a4%89%e6%8f%9b%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%82%92%e6%95%99%e3%81%88%e3%81%a6%e3%81%8f%e3%81%a0%e3%81%95%e3%81%84%e3%80%82\/"},"modified":"2024-04-05T02:47:53","modified_gmt":"2024-04-04T17:47:53","slug":"java%e3%81%a7map%e3%82%92list%e3%81%ab%e5%a4%89%e6%8f%9b%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%82%92%e6%95%99%e3%81%88%e3%81%a6%e3%81%8f%e3%81%a0%e3%81%95%e3%81%84%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7map%e3%82%92list%e3%81%ab%e5%a4%89%e6%8f%9b%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%82%92%e6%95%99%e3%81%88%e3%81%a6%e3%81%8f%e3%81%a0%e3%81%95%e3%81%84%e3%80%82\/","title":{"rendered":"Java\u3067Map\u3092List\u306b\u5909\u63db\u3059\u308b\u65b9\u6cd5\u3092\u6559\u3048\u3066\u304f\u3060\u3055\u3044\u3002"},"content":{"rendered":"<p>Java\u3067\u306f\u3001Map\u3092List\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u5909\u63db\u3059\u308b\u305f\u3081\u306b\u3001\u6b21\u306e\u3088\u3046\u306a\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059:<\/p>\n<pre class=\"post-pre\">import\u00a0java.util.Map;<\/pre>\n<p>import\u00a0java.util.List;<\/p>\n<p>import\u00a0java.util.ArrayList;<\/p>\n<p>public\u00a0class\u00a0Main\u00a0{<\/p>\n<p>public\u00a0static\u00a0void\u00a0main(String[]\u00a0args)\u00a0{<\/p>\n<p>Map&lt;String,\u00a0Integer&gt;\u00a0map\u00a0=\u00a0Map.of(&#8220;key1&#8221;,\u00a01,\u00a0&#8220;key2&#8221;,\u00a02,\u00a0&#8220;key3&#8221;,\u00a03);<\/p>\n<p>List&lt;Map.Entry&lt;String,\u00a0Integer&gt;&gt;\u00a0list\u00a0=\u00a0new\u00a0ArrayList&lt;&gt;(map.entrySet());<\/p>\n<p>\/\/\u00a0\u8f93\u51fa\u8f6c\u6362\u540e\u7684List\u5bf9\u8c61<\/p>\n<p>for\u00a0(Map.Entry&lt;String,\u00a0Integer&gt;\u00a0entry\u00a0:\u00a0list)\u00a0{<\/p>\n<p>System.out.println(&#8220;Key:\u00a0&#8221;\u00a0+\u00a0entry.getKey()\u00a0+\u00a0&#8220;,\u00a0Value:\u00a0&#8221;\u00a0+\u00a0entry.getValue());<\/p>\n<p>}<\/p>\n<p>}<\/p>\n<p>}<\/p>\n<pre class=\"post-pre\"><\/pre>\n<p>\u4e0a\u306e\u4f8b\u3067\u306f\u3001Map \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092 Set \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u5909\u63db\u3057\u3001\u3055\u3089\u306b Set \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092 List \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u5909\u63db\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u3063\u3066\u3001Map \u5185\u306e\u30ad\u30fc\u3068\u5024\u306e\u95a2\u4fc2\u3092\u4fdd\u6301\u3057\u3064\u3064\u3001List \u5185\u306b\u306f\u633f\u5165\u9806\u306b\u683c\u7d0d\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>Java 9\u4ee5\u964d\u3067\u306fMap.of()\u30e1\u30bd\u30c3\u30c9\u3067\u4e0d\u5909\u306eMap\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3067\u304d\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u307e\u3059\u3002\u305f\u3060\u3057Java 8\u4ee5\u524d\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u306fHashMap\u3084Map\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3092\u5b9f\u88c5\u3057\u305f\u4ed6\u306e\u30af\u30e9\u30b9\u3092\u5229\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java\u3067\u306f\u3001Map\u3092List\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u5909\u63db\u3059\u308b\u305f\u3081\u306b\u3001\u6b21\u306e\u3088\u3046\u306a\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059: import\u00a0java.util.Map; import\u00a0java.util.List; import\u00a0java.util.Arra [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-118642","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - 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