\u5728\u5e94\u7528\u5f00\u53d1\u4e2d\uff0c\u7ecf\u5e38\u9700\u8981\u4e00\u4e9b\u5468\u671f\u6027\u7684\u64cd\u4f5c\uff0c\u6bd4\u5982\u6bcf5\u5206\u949f\u68c0\u67e5\u4e00\u4e0b\u65b0\u90ae\u4ef6\u7b49\u3002\u5bf9\u4e8e\u8fd9\u6837\u7684\u64cd\u4f5c\u6700\u65b9\u4fbf\u3001\u9ad8\u6548\u7684\u5b9e\u73b0\u65b9\u5f0f\u5c31\u662f\u4f7f\u7528java.util.Timer\u5de5\u5177\u7c7b\u3002\u6bd4\u5982\u4e0b\u9762\u7684\u4ee3\u7801\u6bcf5\u5206\u949f\u68c0\u67e5\u4e00\u904d\u662f\u5426\u6709\u65b0\u90ae\u4ef6\uff1a
\n<\/p>\n
[java] private java.util.Timer timer;
\n timer = new Timer(true);
\n timer.schedule(new java.util.TimerTask() {
\n public void run() {
\n \/\/server.checkNewMail(); \u68c0\u67e5\u65b0\u90ae\u4ef6
\n }
\n }, 0, 5*60*1000); [\/java]<\/p>\n
\u4f7f\u7528\u8fd9\u51e0\u884c\u4ee3\u7801\u4e4b\u540e\uff0cTimer\u672c\u8eab\u4f1a\u6bcf\u96945\u5206\u949f\u8c03\u7528\u4e00\u904dserver.checkNewMail()\u65b9\u6cd5\uff0c\u4e0d\u9700\u8981\u81ea\u5df1\u542f\u52a8\u7ebf\u7a0b\u3002Timer\u672c\u8eab\u4e5f\u662f\u591a\u7ebf\u7a0b\u540c\u6b65\u7684\uff0c\u591a\u4e2a\u7ebf\u7a0b\u53ef\u4ee5\u5171\u7528\u4e00\u4e2aTimer\uff0c\u4e0d\u9700\u8981\u5916\u90e8\u7684\u540c\u6b65\u4ee3\u7801\u3002
\n \u5728\u300aThe Java Tutorial\u300b\u4e2d\u6709\u66f4\u5b8c\u6574\u7684\u4f8b\u5b50\uff1a<\/p>\n
[java]public class AnnoyingBeep {
\n Toolkit toolkit;
\n Timer timer; <\/p>\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 } <\/p>\n
class RemindTask extends TimerTask {
\n int numWarningBeeps = 3; <\/p>\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(); \/\/Not necessary because we call System.exit
\n System.exit(0); \/\/Stops the AWT thread (and everything else)
\n }
\n }
\n }
\n …
\n} [\/java]
\n\u8fd9\u6bb5\u7a0b\u5e8f\uff0c\u6bcf\u96943\u79d2\u54cd\u94c3\u4e00\u58f0\uff0c\u5e76\u6253\u5370\u51fa\u4e00\u884c\u6d88\u606f\u3002\u5faa\u73af3\u6b21\u3002\u7a0b\u5e8f\u8f93\u51fa\u5982\u4e0b\uff1a
\nTask 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<\/p>\n
Timer\u7c7b\u4e5f\u53ef\u4ee5\u65b9\u4fbf\u5730\u7528\u6765\u4f5c\u4e3a\u5ef6\u8fdf\u6267\u884c\uff0c\u6bd4\u5982\u4e0b\u9762\u7684\u4ee3\u7801\u5ef6\u8fdf\u6307\u5b9a\u7684\u65f6\u95f4\uff08\u4ee5\u79d2\u4e3a\u5355\u4f4d\uff09\u6267\u884c\u67d0\u64cd\u4f5c\u3002\u7c7b\u4f3c\u7535\u89c6\u7684\u5ef6\u8fdf\u5173\u673a\u529f\u80fd\u3002<\/p>\n
…
\n[java 1=”class” 2=”ReminderBeep” 3=”{” 4=”…” 5=”public” 6=”ReminderBeep(int” 7=”seconds)” 8=”{” toolkit=”Toolkit.getDefaultToolkit();” timer=”new” 9=”Timer();” 10=”timer.schedule(new” 11=”RemindTask(),” 12=”seconds*1000);” 13=”}” 14=”class” 15=”RemindTask” 16=”extends” 17=”TimerTask” 18=”{” 19=”public” 20=”void” 21=”run()” 22=”{” 23=”System.out.println("Time's” 24=”up!");” 25=”toolkit.beep();” 26=”\/\/timer.cancel();” 27=”\/\/Not” 28=”necessary” 29=”because” 30=”we” 31=”call” 32=”System.exit” 33=”System.exit(0);” 34=”\/\/Stops” 35=”the” 36=”AWT” 37=”thread” 38=”(and” 39=”everything” 40=”else)” 41=”}” 42=”}” 43=”…” 44=”}” 45=”[\/java” language=”>public”][\/java]<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5728\u5e94\u7528\u5f00\u53d1\u4e2d\uff0c\u7ecf\u5e38\u9700\u8981\u4e00\u4e9b\u5468\u671f\u6027\u7684\u64cd\u4f5c\uff0c\u6bd4\u5982\u6bcf5\u5206\u949f\u68c0\u67e5\u4e00\u4e0b\u65b0\u90ae\u4ef6\u7b49\u3002\u5bf9\u4e8e\u8fd9\u6837\u7684\u64cd\u4f5c\u6700\u65b9\u4fbf\u3001\u9ad8\u6548\u7684\u5b9e\u73b0\u65b9\u5f0f\u5c31\u662f […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[42],"tags":[],"_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":596,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/593\/revisions\/596"}],"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}]}}