{"id":882,"date":"2022-12-07T20:13:17","date_gmt":"2023-08-09T03:33:24","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/index.php\/2023\/11\/30\/java%e3%81%ae%e3%82%bf%e3%82%a4%e3%83%9e%e3%83%bc%e3%81%a8%e3%82%bf%e3%82%b9%e3%82%af%e3%81%ae%e4%be%8b\/"},"modified":"2025-08-01T03:14:27","modified_gmt":"2025-07-31T18:14:27","slug":"java%e3%81%ae%e3%82%bf%e3%82%a4%e3%83%9e%e3%83%bc%e3%81%a8%e3%82%bf%e3%82%b9%e3%82%af%e3%81%ae%e4%be%8b","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%ae%e3%82%bf%e3%82%a4%e3%83%9e%e3%83%bc%e3%81%a8%e3%82%bf%e3%82%b9%e3%82%af%e3%81%ae%e4%be%8b\/","title":{"rendered":"Java\u306e\u30bf\u30a4\u30de\u30fc\u3068\u30bf\u30b9\u30af\u306e\u4f8b"},"content":{"rendered":"<p>Java\u306ejava.util.Timer\u306f\u3001\u5c06\u6765\u306e\u7279\u5b9a\u306e\u6642\u70b9\u3067\u30b9\u30ec\u30c3\u30c9\u306e\u5b9f\u884c\u3092\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3067\u304d\u308b\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\u30af\u30e9\u30b9\u3067\u3059\u3002Java Timer\u30af\u30e9\u30b9\u306f\u3001\u30bf\u30b9\u30af\u3092\u4e00\u5ea6\u3060\u3051\u5b9f\u884c\u3059\u308b\u304b\u3001\u5b9a\u671f\u7684\u306a\u9593\u9694\u3067\u5b9f\u884c\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3>Java\u306e\u30bf\u30a4\u30de\u30fc\u30bf\u30b9\u30af<\/h3>\n<p>java.util.TimerTask\u306f\u3001Runnable\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3057\u305f\u62bd\u8c61\u30af\u30e9\u30b9\u3067\u3042\u308a\u3001\u79c1\u305f\u3061\u304cJava\u306eTimer\u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3057\u3066\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u3092\u8a2d\u5b9a\u3067\u304d\u308b\u72ec\u81ea\u306eTimerTask\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306b\u3053\u306e\u30af\u30e9\u30b9\u3092\u62e1\u5f35\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h2>Java\u306e\u30bf\u30a4\u30de\u30fc\u306e\u4f8b<\/h2>\n<p>Java\u306eTimer\u30af\u30e9\u30b9\u306f\u30b9\u30ec\u30c3\u30c9\u30bb\u30fc\u30d5\u3067\u3042\u308a\u3001\u8907\u6570\u306e\u30b9\u30ec\u30c3\u30c9\u304c\u5916\u90e8\u306e\u540c\u671f\u3092\u5fc5\u8981\u3068\u305b\u305a\u306b\u5358\u4e00\u306eTimer\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u5171\u6709\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002Timer\u30af\u30e9\u30b9\u306fjava.util.TaskQueue\u3092\u4f7f\u7528\u3057\u3066\u3001\u6307\u5b9a\u3055\u308c\u305f\u5b9a\u671f\u9593\u9694\u3067\u30bf\u30b9\u30af\u3092\u8ffd\u52a0\u3057\u3001\u3044\u3064\u3067\u3082\u4e00\u5ea6\u306b1\u3064\u306e\u30b9\u30ec\u30c3\u30c9\u304cTimerTask\u3092\u5b9f\u884c\u3057\u3066\u3044\u308b\u72b6\u614b\u306b\u306a\u308a\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u300110\u79d2\u3054\u3068\u306b\u5b9f\u884c\u3059\u308bTimer\u3092\u4f5c\u6210\u3057\u3066\u3044\u308b\u5834\u5408\u3067\u3082\u3001\u5358\u4e00\u306e\u30b9\u30ec\u30c3\u30c9\u306e\u5b9f\u884c\u306b\u306f20\u79d2\u304b\u304b\u308b\u5834\u5408\u3001Timer\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u30bf\u30b9\u30af\u3092\u30ad\u30e5\u30fc\u306b\u8ffd\u52a0\u3057\u7d9a\u3051\u30011\u3064\u306e\u30b9\u30ec\u30c3\u30c9\u304c\u7d42\u4e86\u3059\u308b\u3068\u30ad\u30e5\u30fc\u306b\u901a\u77e5\u304c\u884c\u308f\u308c\u3001\u5225\u306e\u30b9\u30ec\u30c3\u30c9\u304c\u5b9f\u884c\u3092\u958b\u59cb\u3057\u307e\u3059\u3002Java\u306eTimer\u30af\u30e9\u30b9\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306ewait\u30e1\u30bd\u30c3\u30c9\u3068notify\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u30bf\u30b9\u30af\u3092\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u306bJava\u306eTimer\u3068TimerTask\u306e\u4f8b\u306e\u30b7\u30f3\u30d7\u30eb\u306a\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>package com.scdev.threads;\r\n\r\nimport java.util.Date;\r\nimport java.util.Timer;\r\nimport java.util.TimerTask;\r\n\r\npublic class MyTimerTask extends TimerTask {\r\n\r\n    @Override\r\n    public void run() {\r\n        System.out.println(\"Timer task started at:\"+new Date());\r\n        completeTask();\r\n        System.out.println(\"Timer task finished at:\"+new Date());\r\n    }\r\n\r\n    private void completeTask() {\r\n        try {\r\n            \/\/assuming it takes 20 secs to complete the task\r\n            Thread.sleep(20000);\r\n        } catch (InterruptedException e) {\r\n            e.printStackTrace();\r\n        }\r\n    }\r\n    \r\n    public static void main(String args[]){\r\n        TimerTask timerTask = new MyTimerTask();\r\n        \/\/running timer task as daemon thread\r\n        Timer timer = new Timer(true);\r\n        timer.scheduleAtFixedRate(timerTask, 0, 10*1000);\r\n        System.out.println(\"TimerTask started\");\r\n        \/\/cancel after sometime\r\n        try {\r\n            Thread.sleep(120000);\r\n        } catch (InterruptedException e) {\r\n            e.printStackTrace();\r\n        }\r\n        timer.cancel();\r\n        System.out.println(\"TimerTask cancelled\");\r\n        try {\r\n            Thread.sleep(30000);\r\n        } catch (InterruptedException e) {\r\n            e.printStackTrace();\r\n        }\r\n    }\r\n\r\n}\r\n<\/code><\/pre>\n<p>1\u3064\u306e\u30b9\u30ec\u30c3\u30c9\u306e\u5b9f\u884c\u306b\u306f20\u79d2\u304b\u304b\u308a\u307e\u3059\u304c\u3001Java\u306e\u30bf\u30a4\u30de\u30fc\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u30bf\u30b9\u30af\u309210\u79d2\u3054\u3068\u306b\u5b9f\u884c\u3059\u308b\u3088\u3046\u306b\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u4ee5\u4e0b\u306f\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u51fa\u529b\u3067\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>TimerTask started\r\nTimer task started at:Wed Dec 26 19:16:39 PST 2012\r\nTimer task finished at:Wed Dec 26 19:16:59 PST 2012\r\nTimer task started at:Wed Dec 26 19:16:59 PST 2012\r\nTimer task finished at:Wed Dec 26 19:17:19 PST 2012\r\nTimer task started at:Wed Dec 26 19:17:19 PST 2012\r\nTimer task finished at:Wed Dec 26 19:17:39 PST 2012\r\nTimer task started at:Wed Dec 26 19:17:39 PST 2012\r\nTimer task finished at:Wed Dec 26 19:17:59 PST 2012\r\nTimer task started at:Wed Dec 26 19:17:59 PST 2012\r\nTimer task finished at:Wed Dec 26 19:18:19 PST 2012\r\nTimer task started at:Wed Dec 26 19:18:19 PST 2012\r\nTimerTask cancelled\r\nTimer task finished at:Wed Dec 26 19:18:39 PST 2012\r\n<\/code><\/pre>\n<p>\u51fa\u529b\u306f\u3001\u30bf\u30b9\u30af\u304c\u65e2\u306b\u5b9f\u884c\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3001\u30bf\u30a4\u30de\u30fc\u306f\u305d\u308c\u304c\u7d42\u4e86\u3059\u308b\u307e\u3067\u5f85\u6a5f\u3057\u3001\u7d42\u4e86\u3057\u305f\u3089\u6b21\u306e\u30bf\u30b9\u30af\u3092\u30ad\u30e5\u30fc\u304b\u3089\u518d\u958b\u3059\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u3044\u307e\u3059\u3002 Java\u306e\u30bf\u30a4\u30de\u30fc\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u30c7\u30fc\u30e2\u30f3\u30b9\u30ec\u30c3\u30c9\u3068\u3057\u3066\u95a2\u9023\u3059\u308b\u30bf\u30b9\u30af\u3092\u5b9f\u884c\u3059\u308b\u305f\u3081\u306b\u4f5c\u6210\u3067\u304d\u307e\u3059\u3002 Timer\u306ecancel()\u30e1\u30bd\u30c3\u30c9\u306f\u30bf\u30a4\u30de\u30fc\u3092\u7d42\u4e86\u3057\u3001\u4e88\u5b9a\u3055\u308c\u305f\u30bf\u30b9\u30af\u3092\u7834\u68c4\u3057\u307e\u3059\u304c\u3001\u73fe\u5728\u5b9f\u884c\u4e2d\u306e\u30bf\u30b9\u30af\u306b\u306f\u5e72\u6e09\u305b\u305a\u3001\u7d42\u4e86\u3092\u8a31\u5bb9\u3057\u307e\u3059\u3002\u30bf\u30a4\u30de\u30fc\u304c\u30c7\u30fc\u30e2\u30f3\u30b9\u30ec\u30c3\u30c9\u3068\u3057\u3066\u5b9f\u884c\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3001\u30ad\u30e3\u30f3\u30bb\u30eb\u3057\u3066\u3044\u306a\u3044\u5834\u5408\u3067\u3082\u3001\u3059\u3079\u3066\u306e\u30e6\u30fc\u30b6\u30fc\u30b9\u30ec\u30c3\u30c9\u306e\u5b9f\u884c\u304c\u7d42\u4e86\u3059\u308b\u3068\u3059\u3050\u306b\u7d42\u4e86\u3057\u307e\u3059\u3002 Timer\u30af\u30e9\u30b9\u306b\u306f\u3001\u6307\u5b9a\u3055\u308c\u305f\u65e5\u4ed8\u306b\u4e00\u5ea6\u3060\u3051\u30bf\u30b9\u30af\u3092\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u3059\u308b\u305f\u3081\u306e\u3044\u304f\u3064\u304b\u306eschedule()\u30e1\u30bd\u30c3\u30c9\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002\u4e00\u5b9a\u306e\u9593\u9694\u3067\u30bf\u30b9\u30af\u3092\u5b9a\u671f\u7684\u306b\u5b9f\u884c\u3059\u308b\u305f\u3081\u306e\u3044\u304f\u3064\u304b\u306escheduleAtFixedRate()\u30e1\u30bd\u30c3\u30c9\u3082\u3042\u308a\u307e\u3059\u3002 Timer\u3092\u4f7f\u7528\u3057\u3066\u30bf\u30b9\u30af\u3092\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u3059\u308b\u969b\u306b\u306f\u3001\u901a\u5e38\u306e\u30b9\u30ec\u30c3\u30c9\u306e\u5b9f\u884c\u6642\u9593\u3088\u308a\u3082\u9577\u3044\u9593\u9694\u306b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3055\u3082\u306a\u3044\u3068\u3001\u30bf\u30b9\u30af\u306e\u30ad\u30e5\u30fc\u30b5\u30a4\u30ba\u304c\u5897\u3048\u7d9a\u3051\u3001\u6700\u7d42\u7684\u306b\u30bf\u30b9\u30af\u304c\u5e38\u306b\u5b9f\u884c\u3055\u308c\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\u4ee5\u4e0a\u3001Java\u306e\u30bf\u30a4\u30de\u30fc\u3068\u30bf\u30a4\u30de\u30fc\u30bf\u30b9\u30af\u306e\u30af\u30a4\u30c3\u30af\u306a\u307e\u3068\u3081\u3067\u3057\u305f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java\u306ejava.util.Timer\u306f\u3001\u5c06\u6765\u306e\u7279\u5b9a\u306e\u6642\u70b9\u3067\u30b9\u30ec\u30c3\u30c9\u306e\u5b9f\u884c\u3092\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3067\u304d\u308b\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\u30af\u30e9\u30b9\u3067\u3059\u3002Java Timer\u30af\u30e9\u30b9\u306f\u3001\u30bf\u30b9\u30af\u3092\u4e00\u5ea6\u3060\u3051\u5b9f\u884c\u3059\u308b\u304b\u3001\u5b9a\u671f\u7684\u306a\u9593\u9694\u3067\u5b9f\u884c\u3059\u308b\u305f\u3081 [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-882","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-26","tag-61"],"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\u306e\u30bf\u30a4\u30de\u30fc\u3068\u30bf\u30b9\u30af\u306e\u4f8b - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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