import java.util.concurrent.locks.*;

class Do9

{

    public static void main(String[] args)

    {

        Ds d=new Ds();

        Thread t1=new Thread(d);

        Thread t2=new Thread(d);

        Thread t3=new Thread(d);

        t1.start();

        t2.start();

        t3.setDaemon(true);//变成后台线层，要在start()之前

        t3.start();

        for (int i=0; i<9999;i++ )

        {

            if(i==9997)

            {

            t1.interrupt();

            t2.interrupt();

            break;

            }

            System.out.println(i);

        }

    }

}

class Ds implements     Runnable

{

  private boolean flag=true;

  public synchronized void run()

  {

    while(flag)

      {

    try{wait();}catch(InterruptedException e){System.out.println(Thread.currentThread().getName()+"..."+e);}

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

    break;

      }

  }

  public void setFlag()

    {

    flag=false;

    }

}