JDK built-in scheduled tasks

Import Java. util. timertask;/*** implement scheduled task **/public class mytimertask extends timertask {@ overridepublic void run () {int num = 0; while (Num <3) {num ++; system. out. println (Num + "test... "); try {thread. sleep (1000);} catch (interruptedexception e ){}}}}

Import Java. util. timertask;/*** start scheduled task **/public class mytimer extends Java. util. timer {/*** task: scheduled task delay: after the project is started, the task starts to run after the specified time period. Period: The interval between no scheduled tasks * if the task is executed too long; this will cause the period execution task to be extended */Public void schedule (timertask task, long delay, long period) {super. schedule (task, delay, period);}/*** Java start scheduled task ** @ Param Arg */public static void main (string Arg []) {mytimertask task = new mytimertask (); New mytimer (). schedule (task, 1000,500 0 );}}