创建周期性线程

package _4;

import java.util.Timer;

import java.util.TimerTask;

public class TimerThreadDemo {

static class Blossom extends TimerTask{

public void run() {

System.out.println(Thread.currentThread().getName()+":开花");

}

}

static class Fruit extends TimerTask{

public void run() {

System.out.println(Thread.currentThread().getName()+":结果");

}

}

public static void main(String[]args)throws InterruptedException{

Timer timer=new Timer();

timer.schedule(new Blossom(),300,200);

//300ms后开始执行，每200ms执行一次

timer.schedule(new Fruit(),400,500);

//400ms后执行，每500ms执行一次

Thread.sleep(1000);

//主线程休息1000ms

timer.cancel();

//终止定时器，丢弃所有正在执行的任务

}

}