初学者问问行家们， 这个程序为什么没有锁死？？？
public class TestDeadLock implements Runnable{
public int flag = 1;
static Object o1 = new Object();
static Object o2 = new Object();
public void run() {
System.out.println("flag : " + flag);
if (flag==1){
synchronized(o1) {
try{
Thread.sleep(500);
}catch(InterruptedException ir) {ir.printStackTrace();}
}
synchronized(o2) {
System.out.println("1");
}
}
if (flag==0){
synchronized(o2) {
try{
Thread.sleep(500);
}catch(InterruptedException ir) {ir.printStackTrace();}
}
synchronized(o1) {
System.out.println("0");
}
}
}
public static void main(String[] args) {
TestDeadLock td1 = new TestDeadLock();
TestDeadLock td2 = new TestDeadLock();
td1.flag = 1;
td2.flag = 0;
Thread t1 = new Thread(td1);
Thread t2 = new Thread(td2);
t1.start();
t2.start();
}
}
