线程同步——Lock

版权声明：JAVA https://blog.csdn.net/weixin_43190126/article/details/84961481

package com.qyl.maipiao.one3;

import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

public class eldrlyLock implements Runnable{
	int count = 50;
	private final ReentrantLock lock = new ReentrantLock();
	@Override
	public void run() {
		while (count>0) {		
			lock.lock();
			if (count>0) {
				try {
						System.out.println(Thread.currentThread().getName()+"正在销售"+count+"张票");
						count--;							
				} finally {
					lock.unlock();
				}
			}
		}
	}
}

package com.qyl.maipiao.one3;

public class count {
	
	public static void main(String[] args) {	
		eldrlyLock eld = new eldrlyLock();	
		new Thread(eld,"老人").start();
		new Thread(eld,"小孩").start();
		new Thread(eld,"军人").start();	
	}
}