Java synchronized关键字实现死锁demo

public class DeadLockDemo {
    private static final String A = "A";
    private static final String B = "B";

    public static void main(String[] args) {
        new Thread(new Runnable() {
            @Override
            public void run() {
                synchronized (A) {
                    try {
                        Thread.sleep(1000);
                        System.out.println("Try to enter lock B");
                        synchronized (B) {
                            System.out.println("This is Thread A!!!");
                        }
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
            }
        }).start();

        new Thread(new Runnable() {
            @Override
            public void run() {
                synchronized (B) {
                    try {
                        Thread.sleep(1000);
                        System.out.println("Try to enter lock A");
                        synchronized (A) {
                            System.out.println("This is Thread B!!!");
                        }
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
            }
        }).start();
    }
}

运行结果：

Try to enter lock A

Try to enter lock B