{"id":98906,"date":"2024-03-22T00:13:38","date_gmt":"2024-03-21T15:13:38","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/java%e4%b8%advolitate%e5%85%b3%e9%94%ae%e5%ad%97%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8\/"},"modified":"2024-04-05T07:44:53","modified_gmt":"2024-04-04T22:44:53","slug":"java%e4%b8%advolitate%e5%85%b3%e9%94%ae%e5%ad%97%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/java%e4%b8%advolitate%e5%85%b3%e9%94%ae%e5%ad%97%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8\/","title":{"rendered":"java\u4e2dvolitate\u5173\u952e\u5b57\u5982\u4f55\u4f7f\u7528"},"content":{"rendered":"<p>Java\u3067\u306f\u3001volatile\u306f\u5909\u6570\u306e\u4fee\u98fe\u306b\u4f7f\u308f\u308c\u308b\u30ad\u30fc\u30ef\u30fc\u30c9\u3067\u3059\u3002volatile\u30ad\u30fc\u30ef\u30fc\u30c9\u3067\u4fee\u98fe\u3055\u308c\u305f\u5909\u6570\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u7279\u5fb4\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ol>\n<li>\u53ef\u8996\u6027\uff1avolatile \u30ad\u30fc\u30ef\u30fc\u30c9\u306f\u5909\u6570\u306e\u5909\u66f4\u3092\u3059\u3079\u3066\u306e\u30b9\u30ec\u30c3\u30c9\u306b\u5bfe\u3057\u3066\u53ef\u8996\u306b\u3057\u307e\u3059\u3002\u3042\u308b\u30b9\u30ec\u30c3\u30c9\u304c volatile \u5909\u6570\u3092\u5909\u66f4\u3059\u308b\u3068\u3001\u4ed6\u306e\u30b9\u30ec\u30c3\u30c9\u306f\u6700\u65b0\u306e\u5909\u66f4\u3092\u5373\u5ea7\u306b\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/li>\n<li>volatile \u30ad\u30fc\u30ef\u30fc\u30c9\u306f\u3001\u547d\u4ee4\u306e\u4e26\u3079\u66ff\u3048\u6700\u9069\u5316\u3092\u7981\u6b62\u3057\u307e\u3059\u3002 volatile \u30ad\u30fc\u30ef\u30fc\u30c9\u3067\u4fee\u98fe\u3055\u308c\u305f\u5909\u6570\u306f\u3001\u8aad\u307f\u66f8\u304d\u64cd\u4f5c\u306e\u524d\u5f8c\u306b\u30e1\u30e2\u30ea\u30d0\u30ea\u30a2\u304c\u633f\u5165\u3055\u308c\u3001\u547d\u4ee4\u306e\u5b9f\u884c\u9806\u5e8f\u304c\u60f3\u5b9a\u3069\u304a\u308a\u306b\u306a\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n<p>volatile\u30ad\u30fc\u30ef\u30fc\u30c9\u3067\u4fee\u98fe\u3055\u308c\u305f\u5909\u6570\u306e\u69cb\u6587\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">volatile<\/span> dataType variableName;\r\n<\/code><\/pre>\n<p>\u4f8b\u3048\u3070\u3001\u6b21\u306e\u30b3\u30fc\u30c9\u30b9\u30cb\u30da\u30c3\u30c8\u306f\u3001volatile \u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">VolatileExample<\/span> {\r\n    <span class=\"hljs-keyword\">private<\/span> <span class=\"hljs-keyword\">volatile<\/span> <span class=\"hljs-type\">boolean<\/span> <span class=\"hljs-variable\">flag<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-literal\">false<\/span>;\r\n\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">setFlag<\/span><span class=\"hljs-params\">(<span class=\"hljs-type\">boolean<\/span> value)<\/span> {\r\n        flag = value;\r\n    }\r\n\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-type\">boolean<\/span> <span class=\"hljs-title function_\">getFlag<\/span><span class=\"hljs-params\">()<\/span> {\r\n        <span class=\"hljs-keyword\">return<\/span> flag;\r\n    }\r\n}\r\n<\/code><\/pre>\n<p>\u4e0a\u306e\u30b3\u30fc\u30c9\u3067\u306f\u3001flag\u5909\u6570\u306fvolatile\u30ad\u30fc\u30ef\u30fc\u30c9\u3067\u4fee\u98fe\u3059\u308b\u3053\u3068\u3067\u3001\u53ef\u8996\u6027\u3068\u9806\u5e8f\u6027\u3092\u78ba\u4fdd\u3057\u3066\u3044\u307e\u3059\u3002\u4ed6\u306e\u30b9\u30ec\u30c3\u30c9\u306f\u3001flag\u5909\u6570\u306e\u8aad\u307f\u66f8\u304d\u6642\u306b\u30b9\u30ec\u30c3\u30c9\u306e\u30ed\u30fc\u30ab\u30eb\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u4f7f\u7528\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u30e1\u30a4\u30f3\u30e1\u30e2\u30ea\u306e\u6700\u65b0\u306e\u5024\u3092\u76f4\u63a5\u8aad\u307f\u53d6\u3063\u3066\u66f8\u304d\u8fbc\u307f\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java\u3067\u306f\u3001volatile\u306f\u5909\u6570\u306e\u4fee\u98fe\u306b\u4f7f\u308f\u308c\u308b\u30ad\u30fc\u30ef\u30fc\u30c9\u3067\u3059\u3002volatile\u30ad\u30fc\u30ef\u30fc\u30c9\u3067\u4fee\u98fe\u3055\u308c\u305f\u5909\u6570\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u7279\u5fb4\u304c\u3042\u308a\u307e\u3059\u3002 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