不懂帮顶

这里哪有争夺资源？不是一人一份资源吗

public class DeadLock implements Runnable {
public int flag = 0;
static Object o1 = new Object(),o2 = new Object();
public void run(){
System.out.println("flag = "+flag);
if(flag == 0){
synchronized(o1){
try{
Thread.sleep(500);
}catch(Exception e ){
e.printStackTrace();
}
synchronized(o2){
System.out.println("0");
}
}
}
if(flag == 1){
synchronized(o2){
try{
Thread.sleep(500);
}catch(Exception e ){
e.printStackTrace();
}
synchronized(o1){
System.out.println("1");
}
}
}
}
public static void main(String[] args) {
DeadLock d1 = new DeadLock();
DeadLock d2 = new DeadLock();
d1.flag=1;
d2.flag=0;
Thread t1 = new Thread(d1);
Thread t2 = new Thread(d2);
t1.start();
t2.start();
}
}
修改之后的死锁是这样的， 但是如果
static Object o1 = new Object(),o2 = new Object();
取消static关键字后
Object o1 = new Object(),o2 = new Object();
为什么就不是死锁了？？