写一个java死锁的demo

package com.simon.study; /** * 线程死锁 一个线程要同时拥有两个对象的资源才能进行下一步操作； * @author: Simon * @date: 2017年7月29日 下午9:48:43 */ public class DeadLock implements Runnable{ static Object o1=new Object(),o2=new Object(); public int flag=1; public void run() { // TODO Auto-generated method stub System.out.println("flag***********"+flag); if(flag==1){ synchronized (o1) { try { Thread.sleep(500); } catch (Exception e) { // TODO: handle exception } synchronized (o2) { System.out.println("这里线程1获取所有的线程权限"); } } } if(flag==0){ synchronized (o2) { try { Thread.sleep(500); } catch (Exception e) { // TODO: handle exception } synchronized (o1) { System.out.println("这里线程2获取所有的线程权限"); } } } } public static void main(String[] args){ DeadLock deadLock1=new DeadLock(); DeadLock deadLock2=new DeadLock(); deadLock1.flag=1; deadLock2.flag=0; Thread r1=new Thread(deadLock1); Thread r2=new Thread(deadLock2); r1.start(); r2.start(); } }