java多线程死锁实例

以下是一个Java多线程死锁的实例：

public class DeadLock implements Runnable {
    private boolean flag;
    private static Object o1 = new Object();
    private static Object o2 = new Object();

    public DeadLock(boolean flag) {
        this.flag = flag;
    }

    @Override
    public void run() {
        if (flag) {
            synchronized (o1) {
                System.out.println(Thread.currentThread().getName() + "获取了o1锁");
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                synchronized (o2) {
                    System.out.println(Thread.currentThread().getName() + "获取了o2锁");
                }
            }
        } else {
            synchronized (o2) {
                System.out.println(Thread.currentThread().getName() + "获取了o2锁");
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                synchronized (o1) {
                    System.out.println(Thread.currentThread().getName() + "获取了o1锁");
                }
            }
        }
    }
}

public class DeadLockTest {
    public static void main(String[] args) {
        Thread t1 = new Thread(new DeadLock(true), "线程1");
        Thread t2 = new Thread(new DeadLock(false), "线程2");
        t1.start();
        t2.start();
    }
}

上述代码中，两个线程分别获取o1和o2锁，但是获取锁的顺序不同，导致两个线程互相等待对方释放锁，从而形成死锁。