Java多线程死锁

package com.wkcto.intrinsiclock;

/**
 * 死锁
 *  在多线程程序中,同步时可能需要使用多个锁,如果获得锁的顺序不一致,可能会导致死锁
 *  如何避免死锁?
 *      当需要获得多个锁时,所有线程获得锁的顺序保持一致即可
 * Author: 老崔
 */
public class Test10 {
    public static void main(String[] args) {
        SubThread t1 = new SubThread();
        t1.setName("a");
        t1.start();

        SubThread t2 = new SubThread();
        t2.setName("b");
        t2.start();
    }

    static class  SubThread  extends Thread{
        private static final  Object lock1 = new Object();
        private static final  Object lock2 = new Object();

        @Override
        public void run() {
            if ("a".equals(Thread.currentThread().getName())){
                synchronized (lock1){
                    System.out.println("a线程获得了lock1锁,还需要获得lock2锁");
                    synchronized (lock2){
                        System.out.println("a线程获得lock1后又获得了lock2,可以想干任何想干的事");
                    }
                }
            }
            if ("b".equals(Thread.currentThread().getName())){
                synchronized (lock2){
                    System.out.println("b线程获得了lock2锁,还需要获得lock1锁");
                    synchronized (lock1){
                        System.out.println("b 线程获得lock2后又获得了lock1,可以想干任何想干的事");
                    }
                }
            }
       }
    }
}