如果运行结果没有同时出现 o1没出现死锁 和 o2没出现死锁，表示两个线程已死锁
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public class DeadLockClass {
public static void main(String[] args) {
new Thread(new DeadLock(true)).start();
new Thread(new DeadLock(false)).start();
}
private static class DeadLock implements Runnable {
private boolean mFlag;
private static final Object LOCK_0 = new Object();
private static final Object LOCK_1 = new Object();
public DeadLock(boolean flag) { mFlag = flag; }
public void run() {
synchronized (mFlag ? LOCK_0 : LOCK_1) {
try {
Thread.sleep(1000);
} catch (InterruptedException ignore) {
}
synchronized (mFlag ? LOCK_1 : LOCK_0) {
System.out.println("o1没出现死锁");
}
}
}
}
}