java手写一个死锁并用工具查找死锁位置【jps,jstack】

package lock;

import java.util.concurrent.ThreadFactory;

/**
* @author Mr.Zhao 
* @Description:  资源竞争类
* @date 2019/12/28 10:16
* @version 1.0 
*/
class LockResource implements Runnable{
    
    
    private String lockA;
    private String lockB;

    public LockResource(String lockA, String lockB) {
    
    
        this.lockA = lockA;
        this.lockB = lockB;
    }

    @Override
    public void run() {
    
    
        synchronized (lockA) {
    
    
            System.out.println(Thread.currentThread().getName() + "自己持有" + lockA + "尝试获取" + lockB);
            synchronized (lockB) {
    
    
                System.out.println(Thread.currentThread().getName() + "自己持有" + lockB + "尝试获取" + lockA);
            }
        }
    }
}

/**
 * @author Mr.Zhao
 * @version 1.0
 * @Description: 手写一个死锁
 * @date 2019/12/28 10:08
 */
public class DeadLock {
    
    
    public static void main(String[] args) {
    
    
        new Thread(new LockResource("lockA","lockB"), "ThreadAAAA").start();
        new Thread(new LockResource("lockB","lockA"), "ThreadBBBB").start();

    }
}

输入jps查看java进程，查找自己进程的pid

输入jstack 进程id，查看详细信息


可以看到两个线程相互等待，进入死锁

愿你心如花木，向阳而生