java中死锁的案例

//小明和小丽两人争夺水壶和水杯喝水。
//最后各执水壶或水杯，都喝不到水，造成死锁。

public class DeadLock {

    //水壶
    private Object object1=new Object();
    //水杯
    private Object object2=new Object();


    public static void main(String[] args) {

        new DeadLock().test();


    }



    private void test() {
        // TODO Auto-generated method stub

        //people 1
        Thread th1= new Thread(new Dead(0),"小明");
        //people 2
        Thread th2=new Thread(new Dead(1),"小丽");

        th1.start();
        th2.start();

        try {
            Thread.sleep(6000);
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }



    /**
     * 死锁类
     */
    class Dead implements Runnable{

        private int tag=0;

        public Dead(int _tag) {
            tag=_tag;
            // TODO Auto-generated constructor stub
        }

        @Override
        public void run() {
            // TODO Auto-generated method stub

            if(tag==0){
                //尝试着拿水壶
                synchronized (object1) {
                    System.out.println(Thread.currentThread().getName()+"拿到了水壶");
                    try {
                        Thread.sleep(3000);
                    } catch (InterruptedException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }
                    //尝试着去拿水杯
                    System.out.println(Thread.currentThread().getName()+"尝试着拿水杯");
                    synchronized (object2) {
                            System.out.println(Thread.currentThread().getName()+"也拿到了水杯");
                    }
                }

            }else{

                //尝试着拿水杯
                synchronized (object2) {
                    System.out.println(Thread.currentThread().getName()+"拿到了水杯");
                    try {
                        Thread.sleep(3000);
                    } catch (InterruptedException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }

                    //尝试着去拿水壶
                    System.out.println(Thread.currentThread().getName()+"尝试着拿水壶");
                    synchronized (object1) {
                            System.out.println(Thread.currentThread().getName()+"也拿到了水壶");
                    }   
                }
            }   
        }
    }
}