java中死锁的案例

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//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");                    }                   }            }           }    }}
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