死锁简要笔记 死锁死锁测试实例：package com.sw.lock; import java.util.concurrent.TimeUnit; /** * @Author suaxi * @Date 2021/2/22 23:48 * 死锁Demo */ public class DeadLockTest { public static void main(String[] args) { String lockA = "lockA"; String lockB = "lockB"; new Thread(new DeadLock(lockA,lockB),"A").start(); new Thread(new DeadLock(lockB,lockA),"B").start(); } } class DeadLock implements Runnable{ private String lockA; private String lockB; public DeadLock(String lockA, String lockB) { this.lockA = lockA; this.lockB = lockB; } @Override public void run() { synchronized (lockA){ System.out.println(Thread.currentThread().getName()+"--->现在的锁是:"+lockA+"，想获取的资源是："+lockB); try { TimeUnit.SECONDS.sleep(3); } catch (InterruptedException e) { e.printStackTrace(); } synchronized (lockB){ System.out.println(Thread.currentThread().getName()+"--->现在的锁是:"+lockB+"，想获取的资源是："+lockA); } } } } 解决思路：1、jps -l查看进程号2、jstack 进程号查看具体的死锁信息