死锁

/*
死锁
*/
public class fuck12{
public static void main(String[] args){
Object o1=new Object();
Object o2=new Object();

Thread t1=new Thread(new T1(o1,o2));
Thread t2=new Thread(new T2(o1,o2));

t1.start();
t2.start();
}
}


class T1 implements Runnable{
Object o1;
Object o2;

T1(Object o1,Object o2){
this.o1=o1;
this.o2=o2;
}

public void run(){
synchronized(o1){
try{Thread.sleep(1000);}catch(InterruptedException e){}
synchronized(o2){}
}
}
}


class T2 implements Runnable{
Object o1;
Object o2;

T2(Object o1,Object o2){
this.o1=o1;
this.o2=o2;
}

public void run(){
synchronized(o2){
try{Thread.sleep(1000);}catch(InterruptedException e){}
synchronized(o1){}
}
}
}