{"id":593,"date":"2015-04-29T19:42:44","date_gmt":"2015-04-29T11:42:44","guid":{"rendered":"https:\/\/ai.zhousir.top\/?p=593"},"modified":"2026-08-18T12:09:32","modified_gmt":"2026-08-18T04:09:32","slug":"%e4%bd%bf%e7%94%a8java-util-timer","status":"publish","type":"post","link":"https:\/\/ai.zhousir.top\/?p=593","title":{"rendered":"\u4f7f\u7528java.util.Timer"},"content":{"rendered":"
\n

\u5e94\u7528\u91cc\u5e38\u6709\u5468\u671f\u6027\u5de5\u4f5c\uff0c\u6bd4\u5982\u6bcf 5 \u5206\u949f\u68c0\u67e5\u4e00\u6b21\u65b0\u90ae\u4ef6\u3002\u8fd9\u7c7b\u4efb\u52a1\u7528 java.util.Timer<\/code> \u6700\u7701\u4e8b\uff1a\u5b83\u81ea\u5df1\u7ef4\u62a4\u8c03\u5ea6\u7ebf\u7a0b\uff0c\u4e0d\u5fc5\u624b\u5199\u5faa\u73af\u4f11\u7720\u3002<\/p>\n

Timer<\/code> \u4e5f\u9002\u5408\u5ef6\u8fdf\u6267\u884c<\/strong>\uff08\u7c7b\u4f3c\u7535\u89c6\u7684\u5ef6\u65f6\u5173\u673a\uff09\u3002\u591a\u4e2a\u7ebf\u7a0b\u53ef\u4ee5\u5171\u7528\u4e00\u4e2a Timer\uff0c\u5b83\u5185\u90e8\u662f\u540c\u6b65\u7684\uff0c\u4e00\u822c\u4e0d\u5fc5\u518d\u5305\u4e00\u5c42\u9501\u3002<\/p>\n

<\/p>\n

\u4e00\u3001\u5468\u671f\u8c03\u5ea6<\/h2>\n

\u4e0b\u9762\u8fd9\u6bb5\u6bcf 5 \u5206\u949f\u68c0\u67e5\u4e00\u904d\u65b0\u90ae\u4ef6\u3002new Timer(true)<\/code> \u8868\u793a\u5b88\u62a4\u7ebf\u7a0b\uff0c\u4e3b\u7a0b\u5e8f\u9000\u51fa\u65f6\u5b9a\u65f6\u4efb\u52a1\u4e00\u5e76\u7ed3\u675f\uff1a<\/p>\n

private java.util.Timer timer;\ntimer = new Timer(true);\ntimer.schedule(new java.util.TimerTask() {\n    public void run() {\n        \/\/ server.checkNewMail(); \u68c0\u67e5\u65b0\u90ae\u4ef6\n    }\n}, 0, 5 * 60 * 1000);<\/code><\/pre>\n
\u5199\u5b8c\u8fd9\u51e0\u884c\uff0cTimer \u5c31\u4f1a\u6309\u5468\u671f\u8c03\u7528 run()<\/code>\uff0c\u4e0d\u7528\u81ea\u5df1 start<\/code> \u7ebf\u7a0b\u3002<\/p>\n
\u4e8c\u3001\u300aThe Java Tutorial\u300b\u91cc\u7684\u8702\u9e23\u4f8b\u5b50<\/h2>\n
\u4e0b\u9762\u7a0b\u5e8f\u6bcf\u9694 1 \u79d2\u54cd\u4e00\u6b21\uff0c\u5171 3 \u6b21\uff0c\u7136\u540e\u9000\u51fa\uff08\u539f\u6587\u628a\u95f4\u9694\u53e3\u8bef\u5199\u6210\u201c3 \u79d2\u201d\uff0c\u4e0e\u4ee3\u7801 1*1000<\/code> \u53ca\u6ce8\u91ca one second \u4e0d\u7b26\uff0c\u8fd9\u91cc\u6309\u4ee3\u7801\u7ea0\u6b63\uff09\uff1a<\/p>\n
public class AnnoyingBeep {\n    Toolkit toolkit;\n    Timer timer;\n\n    public AnnoyingBeep() {\n        toolkit = Toolkit.getDefaultToolkit();\n        timer = new Timer();\n        timer.schedule(new RemindTask(),\n            0,        \/\/ initial delay\n            1 * 1000);  \/\/ subsequent rate\n    }\n\n    class RemindTask extends TimerTask {\n        int numWarningBeeps = 3;\n\n        public void run() {\n            if (numWarningBeeps > 0) {\n                toolkit.beep();\n                System.out.println(\"Beep!\");\n                numWarningBeeps--;\n            } else {\n                toolkit.beep();\n                System.out.println(\"Time's up!\");\n                \/\/ timer.cancel(); \/\/ \u4e0d\u5fc5\uff1a\u4e0b\u9762 System.exit \u4f1a\u505c\u6389 AWT \u53ca\u5176\u5b83\u7ebf\u7a0b\n                System.exit(0);\n            }\n        }\n    }\n    ...\n}<\/code><\/pre>\n
\u8f93\u51fa\u7c7b\u4f3c\uff1a<\/p>\n
Task scheduled.\nBeep!\nBeep!      \/\/ one second after the first beep\nBeep!      \/\/ one second after the second beep\nTime's up! \/\/ one second after the third beep<\/code><\/pre>\n
\u4e09\u3001\u5ef6\u8fdf\u6267\u884c<\/h2>\n
\u6307\u5b9a\u79d2\u6570\u4e4b\u540e\u518d\u505a\u4e00\u4ef6\u4e8b\uff0c\u6784\u9020\u65f6\u628a\u5ef6\u8fdf\u4f20\u7ed9 schedule<\/code> \u7684\u4e00\u6b21\u6027\u91cd\u8f7d\u5373\u53ef\uff1a<\/p>\n
public class ReminderBeep {\n    Toolkit toolkit;\n    Timer timer;\n    ...\n    public ReminderBeep(int seconds) {\n        toolkit = Toolkit.getDefaultToolkit();\n        timer = new Timer();\n        timer.schedule(new RemindTask(), seconds * 1000);\n    }\n    class RemindTask extends TimerTask {\n        public void run() {\n            System.out.println(\"Time's up!\");\n            toolkit.beep();\n            \/\/ timer.cancel(); \/\/ Not necessary because we call System.exit\n            System.exit(0); \/\/ Stops the AWT thread (and everything else)\n        }\n    }\n    ...\n}<\/code><\/pre>\n\n\n\n\n\n\n\n
\u7528\u6cd5<\/th>\nAPI<\/th>\n\u542b\u4e49<\/th>\n<\/tr>\n<\/thead>\n
\u5468\u671f\u4efb\u52a1<\/td>\nschedule(task, delay, period)<\/code><\/td>\n\u5148\u7b49 delay\uff0c\u518d\u6bcf\u9694 period \u6267\u884c<\/td>\n<\/tr>\n
\u5ef6\u8fdf\u4e00\u6b21<\/td>\nschedule(task, delay)<\/code><\/td>\ndelay \u6beb\u79d2\u540e\u6267\u884c\u4e00\u6b21<\/td>\n<\/tr>\n
\u5b88\u62a4 Timer<\/td>\nnew Timer(true)<\/code><\/td>\n\u8fdb\u7a0b\u9000\u51fa\u65f6\u4e0d\u6321\u4f4f JVM<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n
\u4e00\u53e5\u8bdd\u603b\u7ed3\uff1a\u5468\u671f\u6216\u5ef6\u65f6\u4efb\u52a1\u4ea4\u7ed9 Timer + TimerTask\uff0cschedule \u7684 delay\/period \u7528\u6beb\u79d2\uff0c\u522b\u81ea\u5df1\u8d77\u7ebf\u7a0b\u7a7a\u8f6c\u3002<\/strong><\/p>\n<\/blockquote>\n<\/section>\n","protected":false},"excerpt":{"rendered":"
\u5e94\u7528\u91cc\u5e38\u6709\u5468\u671f\u6027\u5de5\u4f5c\uff0c\u6bd4\u5982\u6bcf 5 \u5206\u949f\u68c0\u67e5\u4e00\u6b21\u65b0\u90ae\u4ef6\u3002\u8fd9\u7c7b\u4efb\u52a1\u7528 java.util.Timer \u6700\u7701\u4e8b\uff1a\u5b83\u81ea […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[17],"tags":[43],"_links":{"self":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/593"}],"collection":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=593"}],"version-history":[{"count":3,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/593\/revisions"}],"predecessor-version":[{"id":3739,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/593\/revisions\/3739"}],"wp:attachment":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=593"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=593"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=593"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}