Java手写死锁并用jps和jstack查看

package com.test;

public class DeadLockTest {
    public static void main(String[] args) {
         new Thread(new DeadLock("TESTA","TESTB"),"ThreadAAAA").start();
         new Thread(new DeadLock("TESTB","TESTA"),"ThreadBBBB").start();
    }
}

class DeadLock implements Runnable{
    String a;
    String b;

    public DeadLock(String str1, String str2){
        this.a = str1;
        this.b = str2;
    }

    @Override
    public void run() {
        synchronized (a){
            System.out.println(Thread.currentThread().getName()+"已经获得"+a+"	尝试获得"+b);
            synchronized (this){
                System.out.println(Thread.currentThread().getName()+"已经获得=========");
            }
            try { Thread.sleep(1000); } catch (InterruptedException e) { e.printStackTrace(); }
            synchronized (b){
                System.out.println(Thread.currentThread().getName()+"已经获得"+a+"	尝试获得"+b);
            }
        }
    }
}

 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