{"id":28779,"date":"2024-03-18T18:57:38","date_gmt":"2024-03-18T09:57:38","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e7%89%b9%e5%ae%9a%e3%81%ae%e5%80%a4%e3%82%92%e3%83%95%e3%82%a3%e3%83%ab%e3%82%bf%e3%83%aa%e3%83%b3%e3%82%b0%e3%81%99%e3%82%8b%e3%81%ab%e3%81%af%e3%80%81stream-filter%e3%82%92%e4%bd%bf\/"},"modified":"2024-03-22T19:24:34","modified_gmt":"2024-03-22T10:24:34","slug":"java%e3%81%a7%e7%89%b9%e5%ae%9a%e3%81%ae%e5%80%a4%e3%82%92%e3%83%95%e3%82%a3%e3%83%ab%e3%82%bf%e3%83%aa%e3%83%b3%e3%82%b0%e3%81%99%e3%82%8b%e3%81%ab%e3%81%af%e3%80%81stream-filter%e3%82%92%e4%bd%bf","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e7%89%b9%e5%ae%9a%e3%81%ae%e5%80%a4%e3%82%92%e3%83%95%e3%82%a3%e3%83%ab%e3%82%bf%e3%83%aa%e3%83%b3%e3%82%b0%e3%81%99%e3%82%8b%e3%81%ab%e3%81%af%e3%80%81stream-filter%e3%82%92%e4%bd%bf\/","title":{"rendered":"Java\u3067\u7279\u5b9a\u306e\u5024\u3092\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3059\u308b\u306b\u306f\u3001stream().filter\u3092\u4f7f\u3046\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f"},"content":{"rendered":"<p>Java\u3067\u306f\u3001\u7279\u5b9a\u306e\u5024\u3092\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3059\u308b\u305f\u3081\u306bStream\u306efilter()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002filter()\u30e1\u30bd\u30c3\u30c9\u306fPredicate\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u53d7\u3051\u5165\u308c\u307e\u3059\u3001\u305d\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u306f\u8981\u7d20\u304c\u30d5\u30a3\u30eb\u30bf\u6761\u4ef6\u3092\u6e80\u305f\u3057\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3059\u308b\u305f\u3081\u306e\u95a2\u6570\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u3067\u3059\u3002\u4ee5\u4e0b\u306fstream().filter()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u7279\u5b9a\u306e\u5024\u3092\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3059\u308b\u4f8b\u3067\u3059\uff1a<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">import<\/span> java.util.Arrays;\r\n<span class=\"hljs-keyword\">import<\/span> java.util.List;\r\n<span class=\"hljs-keyword\">import<\/span> java.util.stream.Collectors;\r\n\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">FilterExample<\/span> {\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">static<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">main<\/span><span class=\"hljs-params\">(String[] args)<\/span> {\r\n        List&lt;Integer&gt; numbers = Arrays.asList(<span class=\"hljs-number\">1<\/span>, <span class=\"hljs-number\">2<\/span>, <span class=\"hljs-number\">3<\/span>, <span class=\"hljs-number\">4<\/span>, <span class=\"hljs-number\">5<\/span>, <span class=\"hljs-number\">6<\/span>, <span class=\"hljs-number\">7<\/span>, <span class=\"hljs-number\">8<\/span>, <span class=\"hljs-number\">9<\/span>, <span class=\"hljs-number\">10<\/span>);\r\n\r\n        <span class=\"hljs-comment\">\/\/ \u8fc7\u6ee4\u51fa\u5076\u6570<\/span>\r\n        List&lt;Integer&gt; evenNumbers = numbers.stream()\r\n                .filter(n -&gt; n % <span class=\"hljs-number\">2<\/span> == <span class=\"hljs-number\">0<\/span>)\r\n                .collect(Collectors.toList());\r\n        System.out.println(<span class=\"hljs-string\">\"Even numbers: \"<\/span> + evenNumbers);\r\n\r\n        <span class=\"hljs-comment\">\/\/ \u8fc7\u6ee4\u51fa\u5927\u4e8e5\u7684\u6570<\/span>\r\n        List&lt;Integer&gt; greaterThanFive = numbers.stream()\r\n                .filter(n -&gt; n &gt; <span class=\"hljs-number\">5<\/span>)\r\n                .collect(Collectors.toList());\r\n        System.out.println(<span class=\"hljs-string\">\"Numbers greater than 5: \"<\/span> + greaterThanFive);\r\n    }\r\n}\r\n<\/code><\/pre>\n<p>\u7d50\u679c\u306f\u51fa\u529b\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n<pre class=\"post-pre\"><code>Even numbers: [2, 4, 6, 8, 10]\r\nNumbers greater than 5: [6, 7, 8, 9, 10]\r\n<\/code><\/pre>\n<p>\u4f8b\u3048\u3070\u3001filter()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u5076\u6570\u30685\u3088\u308a\u5927\u304d\u3044\u6570\u3092\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3057\u307e\u3057\u305f\u3002filter()\u30e1\u30bd\u30c3\u30c9\u306b\u30e9\u30e0\u30c0\u5f0f\u3092\u6e21\u3057\u3066\u3001\u8981\u7d20\u304c\u30d5\u30a3\u30eb\u30bf\u30fc\u6761\u4ef6\u3092\u6e80\u305f\u3057\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3059\u308bPredicate\u95a2\u6570\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u304c\u4f7f\u308f\u308c\u3066\u3044\u307e\u3059\u3002\u6700\u5f8c\u306b\u3001collect()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3055\u308c\u305f\u7d50\u679c\u3092\u65b0\u3057\u3044\u30ea\u30b9\u30c8\u306b\u53ce\u96c6\u3057\u307e\u3057\u305f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java\u3067\u306f\u3001\u7279\u5b9a\u306e\u5024\u3092\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3059\u308b\u305f\u3081\u306bStream\u306efilter()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002filter()\u30e1\u30bd\u30c3\u30c9\u306fPredicate\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u53d7\u3051\u5165\u308c\u307e\u3059\u3001\u305d\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u306f\u8981\u7d20\u304c\u30d5\u30a3\u30eb\u30bf\u6761\u4ef6\u3092\u6e80 [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-28779","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) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Java\u3067\u7279\u5b9a\u306e\u5024\u3092\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3059\u308b\u306b\u306f\u3001stream().filter\u3092\u4f7f\u3046\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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