java按照时间间隔自动执行一些内容

import java.util.Timer;
import java.util.TimerTask;
public class EggTimer {   
    private final Timer timer = new Timer();
    private final int minutes;
    public EggTimer(int minutes) { 
       this.minutes = minutes;
    }
    public void start() { 
       timer.schedule(new TimerTask() { 
           public void run() { 
               playSound(); 
               timer.cancel();
               EggTimer eggTimer = new EggTimer(2); 
               eggTimer.start();
            } 
           private void playSound() { 
               System.out.println("Your egg is ready!");
                // Start a new thread to play a sound...
            } 
       }, minutes * 1 * 1000);
    } 
   public static void main(String[] args) { 
       EggTimer eggTimer = new EggTimer(2); 
       eggTimer.start();
    }
}