Java手写死锁并用jps和jstack查看

 1 package com.test;
 2 
 3 public class DeadLockTest {
 4     public static void main(String[] args) {
 5          new Thread(new DeadLock("TESTA","TESTB"),"ThreadAAAA").start();
 6          new Thread(new DeadLock("TESTB","TESTA"),"ThreadBBBB").start();
 7     }
 8 }
 9 
10 class DeadLock implements Runnable{
11     String a;
12     String b;
13 
14     public DeadLock(String str1, String str2){
15         this.a = str1;
16         this.b = str2;
17     }
18 
19     @Override
20     public void run() {
21         synchronized (a){
22             System.out.println(Thread.currentThread().getName()+"已经获得"+a+"\t尝试获得"+b);
23             synchronized (this){
24                 System.out.println(Thread.currentThread().getName()+"已经获得=========");
25             }
26             try { Thread.sleep(1000); } catch (InterruptedException e) { e.printStackTrace(); }
27             synchronized (b){
28                 System.out.println(Thread.currentThread().getName()+"已经获得"+a+"\t尝试获得"+b);
29             }
30         }
31     }
32 }

 在terminal里输入tps -l 查看当前系统运行的java进程，根据包名类名找到当前运行的进程以及pid，jstack pid查看详细信息