手写一个死锁Demo

相互持有对方锁，导致死锁

 1 package jesse.test04;
 2 
 3 public class DeadLockSample extends Thread{
 4     
 5     private String first;
 6     private String second;
 7     public DeadLockSample(String name,String first, String second) {
 8         super(name);
 9         this.first = first;
10         this.second = second;
11     }
12     
13     @Override
14     public void run(){
15         synchronized(first){
16             System.out.println(this.getName()+" obtained: "+ first);
17             try {
18                 Thread.sleep(1000L);
19                 synchronized(second){
20                     System.out.println(this.getName()+" obtained: "+ second);
21                 }
22             } catch (InterruptedException e) {
23                 e.printStackTrace();
24             }
25         }
26         
27     }
28     public static void main(String[] args) throws InterruptedException {
29         String lockA = "lockA";
30         String lockB = "locakB";
31         DeadLockSample t1 = new DeadLockSample("thread1", lockA, lockB);
32         DeadLockSample t2 = new DeadLockSample("thread2", lockB, lockA);
33         t1.start();
34         t2.start();
35         t1.join();
36         t2.join();
37     }
38     
39     
40 }