java 後台線層也叫守護線層

標籤：

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);//變成後台線層，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;    }}

 

java 後台線層也叫守護線層