Java检测死锁案例

package com.study.train;

import java.io.IOException;

import java.lang.management.ManagementFactory;

import java.lang.management.ThreadInfo;

import java.lang.management.ThreadMXBean;

import java.lang.reflect.Field;

import java.util.*;

import java.util.concurrent.ArrayBlockingQueue;

import java.util.concurrent.ConcurrentHashMap;

import java.util.concurrent.FutureTask;

import java.util.concurrent.LinkedBlockingQueue;

import java.util.concurrent.locks.Lock;

import java.util.concurrent.locks.ReentrantLock;

import static java.lang.Thread.yield;

public class Main extends Thread{

     private Object o1;

     private Object o2;

     Main(Object oa,Object ob,String name) {

         super (name);

         o1 = oa;

         o2 = ob;

     }

     @Override

     public void run() {

         synchronized (o1) {

             System.out.println( "thread: " +Thread.currentThread().getName() + " get lock" );

             try {

                 Thread.sleep( 1000 );

             } catch (InterruptedException e) {

                 e.printStackTrace();

             }

             synchronized (o2) {

                 System.out.println( "two lock is get" );

             }

         }

     }

     public static void main(String[] args) throws InterruptedException {

        Object oj1 = new Object();

        Object oj2 = new Object();

        Main m1 = new Main(oj1,oj2, "thread1" );

        Main m2 = new Main(oj2,oj1, "thread2" );

        m1.start();

        m2.start();

        m1.join();

        m2.join();

     }

}