检测死锁两种方式

方式1:

public class DeadLockDemo {

    public static void main(String[] args) {
        Object o1 = new Object();
        Object o2 = new Object();
        new Thread(() -> {
            synchronized (o1) {
                try {
                    TimeUnit.MILLISECONDS.sleep(200);
                    System.out.println(Thread.currentThread().getName() + "拿到锁o1,试图抢锁o2");
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                synchronized (o2) {
                    System.out.println(Thread.currentThread().getName() + "抢到锁o2");
                }
            }
        }, "A1").start();

        new Thread(() -> {
            synchronized (o2) {
                System.out.println(Thread.currentThread().getName() + "拿到锁o2,试图抢锁o1");
                synchronized (o1) {
                    System.out.println(Thread.currentThread().getName() + "抢到锁o1");
                }
            }
        }, "A2").start();
    }
}

 

 

 

 

 

 

 方式2: