java死锁写法

死锁产生条件：多线程，多个锁，锁嵌套（拿到资源1后还想要别人已经获取的资源2）

package Thread;
/*
* 死锁产生条件：多线程，多个锁，锁嵌套*/
public class DeadLockDemo {
    public static void main(String[] args) {
        //两个不同的锁对象
        Object obj1=new Object();
        Object obj2=new Object();

        new Thread(new Runnable() {
                @Override
                public void run() {
                    String name = Thread.currentThread().getName();
                    synchronized(obj1){//在拿到锁1的基础上去拿锁2
                        System.out.println(name+"拿到锁1，想要锁2");
                        try {
                            Thread.sleep(1000);
                        } catch (InterruptedException e) {
                            e.printStackTrace();
                        }
                        synchronized (obj2){
                            System.out.println(name+"拿到了锁2");
                        }
                    }

                }


        },"线程A").start();

        new Thread(new Runnable() {
            @Override
            public void run() {
                String name = Thread.currentThread().getName();
                synchronized (obj2){//在拿到锁2的基础上去拿锁1
                    System.out.println(name+"拿到了锁2，想要锁1");
                    try {
                        Thread.sleep(1000);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    synchronized(obj1){
                        System.out.println(name+"拿到了锁1");
                    }
                }


            }
        },"线程B").start();
    }
}