java死锁_JAVA_编程开发_程序员俱乐部

package cn.com.io.threadDemo.ThreadSyn;   
9.  
10./**  
11. * 通过两个属性值创建死锁  
12. * 本程序通过两个线程各自锁定一个属性值，这样两个线程都无法结束，造成死锁  
13. * @author Administrator  
14. *  
15. */  
16.public class ThreadSyn2 implements Runnable{   
17.    
18. private static Object obj1=new Object();   
19.    
20. private static Object obj2=new Object();   
21.  
22. /**  
23.  * @param args  
24.  */  
25. public static void main(String[] args) {   
26.  ThreadSyn2 ts1=new ThreadSyn2();   
27.  ThreadSyn2 ts2=new ThreadSyn2();   
28.     
29.  Thread t1=new Thread(ts1);//线程1   
30.  Thread t2=new Thread(ts2);//线程2   
31.  t1.setName("theOne");   
32.  t2.setName("theTwo");   
33.     
34.  t1.start();   
35.  t2.start();   
36.  
37. }   
38.  
39. public void run() {   
40.  String name=Thread.currentThread().getName();   
41.  if(name.equals("theOne")){   
42.   method1(name);   
43.  }else{   
44.   method2(name);   
45.  }   
46.     
47. }   
48.  
49. //线程1的方法锁定obj1，线程2就无法完成   
50. private void method1(String name) {   
51.  System.out.println(name);   
52.  synchronized(obj1){   
53.   try {   
54.    Thread.sleep(1000);   
55.   } catch (InterruptedException e) {   
56.    e.printStackTrace();   
57.   }   
58.   synchronized(obj2){   
59.    System.out.println(obj2);   
60.   }      
61.  }     
62. }   
63.  
64.    //线程1的方法锁定obj2，线程1就无法完成   
65. private void method2(String name) {   
66.  System.out.println(name);   
67.  synchronized(obj2){   
68.   try {   
69.    Thread.sleep(1000);   
70.   } catch (InterruptedException e) {   
71.    e.printStackTrace();   
72.   }   
73.   synchronized(obj1){   
74.    System.out.println(obj1);   
75.   }   
76.  }     
77. }   
78.}