Timer

package ym.com.yjc;

import java.util.Timer;
import java.util.TimerTask;

/**

• 此类用于定时器循环执行任务
• Created by user on 2017/11/22.
  */
  public class SynchronousDemo

{

public static void main(String[] args) {
                  int  i=0;
    new Timer().schedule(  new MySchedule(),2000);

    while (true){
        System.out.println(i++);

        try {
            Thread.sleep(1000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

    }
}

}

class MySchedule extends TimerTask{
@Override
public void run() {

    System.out.println("爆炸了，快跑");
    System.out.println(Thread.currentThread().getName());
    new Timer().schedule(new MySchedule(),2000);
}

}