死锁的问题

Question

public class TestDeadLock{
static Object O1 = new Object ();
static Object O2 = new Object ();
public static void main(String args[]){
Runner6 T1 = new Runner6();
Runner6 T2 = new Runner6();
T1.flag = false;
T1.start();
T2.start();
}
}

class Runner6 extends Thread{
public boolean flag = true;
public void run(){

    if(flag){
    synchronized(TestDeadLock.O1){
        System.out.println("O1锁住了");
        try{sleep(1000);}catch(InterruptedException e){}
        }
    synchronized(TestDeadLock.O2){
        System.out.println("2");
        }
 } 
 else{
    synchronized(TestDeadLock.O2){
                System.out.println("O2锁住了");
        try{sleep(1000);}catch(InterruptedException e){ }
        }       
    synchronized(TestDeadLock.O1){
        System.out.println("1");
        }
    }

    }
}   

怎么把这串代码搞成死锁？

Answer 1

[code="java"]

给个采纳！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！

[/code]