{"id":7058,"date":"2024-03-14T20:37:41","date_gmt":"2024-03-14T11:37:41","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%ae%e3%83%aa%e3%82%b9%e3%83%88%e3%81%a7%e8%a4%87%e6%95%b0%e3%81%ae%e3%83%95%e3%82%a3%e3%83%bc%e3%83%ab%e3%83%89%e3%82%92%e4%b8%a6%e3%81%b9%e6%9b%bf%e3%81%88%e3%82%8b%e6%96%b9%e6%b3%95\/"},"modified":"2025-08-03T12:30:13","modified_gmt":"2025-08-03T03:30:13","slug":"java%e3%81%ae%e3%83%aa%e3%82%b9%e3%83%88%e3%81%a7%e8%a4%87%e6%95%b0%e3%81%ae%e3%83%95%e3%82%a3%e3%83%bc%e3%83%ab%e3%83%89%e3%82%92%e4%b8%a6%e3%81%b9%e6%9b%bf%e3%81%88%e3%82%8b%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%ae%e3%83%aa%e3%82%b9%e3%83%88%e3%81%a7%e8%a4%87%e6%95%b0%e3%81%ae%e3%83%95%e3%82%a3%e3%83%bc%e3%83%ab%e3%83%89%e3%82%92%e4%b8%a6%e3%81%b9%e6%9b%bf%e3%81%88%e3%82%8b%e6%96%b9%e6%b3%95\/","title":{"rendered":"Java 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class=\"post-pre\"><code><span class=\"hljs-keyword\">import<\/span> java.util.Comparator;\r\n\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">PersonComparator<\/span> <span class=\"hljs-keyword\">implements<\/span> <span class=\"hljs-title class_\">Comparator<\/span>&lt;Person&gt; {\r\n    <span class=\"hljs-meta\">@Override<\/span>\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-type\">int<\/span> <span class=\"hljs-title function_\">compare<\/span><span class=\"hljs-params\">(Person p1, Person p2)<\/span> {\r\n        <span class=\"hljs-comment\">\/\/ \u5148\u6309\u7167age\u5b57\u6bb5\u8fdb\u884c\u5347\u5e8f\u6392\u5e8f<\/span>\r\n        <span class=\"hljs-type\">int<\/span> <span class=\"hljs-variable\">result<\/span> <span class=\"hljs-operator\">=<\/span> Integer.compare(p1.getAge(), p2.getAge());\r\n        <span class=\"hljs-keyword\">if<\/span> (result == <span class=\"hljs-number\">0<\/span>) {\r\n            <span class=\"hljs-comment\">\/\/ \u5982\u679cage\u5b57\u6bb5\u76f8\u7b49\uff0c\u5219\u6309\u7167name\u5b57\u6bb5\u8fdb\u884c\u5347\u5e8f\u6392\u5e8f<\/span>\r\n            result = p1.getName().compareTo(p2.getName());\r\n        }\r\n        <span class=\"hljs-keyword\">return<\/span> result;\r\n    }\r\n}\r\n<\/code><\/pre>\n<p>\u305d\u306e\u5f8c\u3001List\u3092\u30bd\u30fc\u30c8\u3059\u308b\u305f\u3081\u306bCollections\u30af\u30e9\u30b9\u306esort\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3001\u30ab\u30b9\u30bf\u30e0\u306eComparator\u30af\u30e9\u30b9\u3092\u6e21\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>List&lt;Person&gt; personList = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">ArrayList<\/span>&lt;&gt;();\r\n<span class=\"hljs-comment\">\/\/ \u6dfb\u52a0Person\u5bf9\u8c61\u5230personList\u4e2d<\/span>\r\n\r\nCollections.sort(personList, <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">PersonComparator<\/span>());\r\n<\/code><\/pre>\n<p>List\u4e2d\u306ePerson\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u3001age\u30d5\u30a3\u30fc\u30eb\u30c9\u3067\u6607\u9806\u306b\u4e26\u3079\u66ff\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002age\u30d5\u30a3\u30fc\u30eb\u30c9\u304c\u7b49\u3057\u3044\u5834\u5408\u306f\u3001name\u30d5\u30a3\u30fc\u30eb\u30c9\u3067\u6607\u9806\u306b\u4e26\u3079\u66ff\u3048\u307e\u3059\u3002\u7570\u306a\u308b\u8907\u6570\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u4e26\u3073\u66ff\u3048\u30ed\u30b8\u30c3\u30af\u3092\u5b9f\u88c5\u3059\u308b\u306b\u306f\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u6bd4\u8f03\u5668\u30af\u30e9\u30b9\u306ecompare\u30e1\u30bd\u30c3\u30c9\u3092\u5909\u66f4\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java\u3067\u306f\u3001List\u5185\u306e\u8907\u6570\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u30bd\u30fc\u30c8\u3059\u308b\u305f\u3081\u306bComparator\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002Comparator\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u5185\u306ecompare\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u8907\u6570\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u5024\u306b\u57fa\u3065\u3044\u3066\u6bd4\u8f03\u3084 [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[890,42,367,54,869],"class_list":["post-7058","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-comparator","tag-java","tag-367","tag-54","tag-869"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Java \u30ea\u30b9\u30c8\u306e\u8907\u6570\u30d5\u30a3\u30fc\u30eb\u30c9\u4e26\u3073\u66ff\u3048\u3010Comparator\u5fb9\u5e95\u89e3\u8aac\u3011 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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