java写一个死锁的简单例子_一个简单的java死锁示例-优快云博客

本文链接：https://blog.youkuaiyun.com/jin_linperfect/article/details/6748193

本文深入探讨了死锁的概念，通过一个简单的示例代码展示了死锁的发生过程，并阐述了如何通过合理设置同步机制来避免死锁问题。

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自己今天想到死锁，就试着写了一个。

package com.ljl.thread;
public class DealLock implements Runnable {
	private int flag = 1;
	// 此对象必须是静态的，同步必须是被多个线程共享
	static Object resource1 = new Object(), resource2 = new Object();

	public void run() {
		if (flag == 1) {
			synchronized (resource1) {
				System.out.println("resource1");
				try {
					Thread.sleep(1000);
				} catch (InterruptedException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
				synchronized (resource2) {
					System.out.println("resource2");
				}
			}
		}
		if (flag == 0) {
			synchronized (resource2) {
				System.out.println("resource2");
				try {
					Thread.sleep(1000);
				} catch (InterruptedException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
				synchronized (resource1) {
					System.out.println("resource1");
				}
			}
		}
	}

	public static void main(String[] args) {
		DealLock lock1 = new DealLock();
		DealLock lock2 = new DealLock();
		lock1.flag = 1;
		lock2.flag = 0;
		Thread ll1 = new Thread(lock1);
		Thread ll2 = new Thread(lock2);
		ll1.start();
		ll2.start();
	}
}