编程开发之--java多线程学习总结（5）

4、对继承自Runnable的线程进行锁机制的使用

package com.lfy.ThreadsSynchronize;import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;public class TicketSellSolution4 implements Runnable {private static int num = 50;//创建一个锁对象Lock l = new ReentrantLock();@Overridepublic void run() {for(int i = 0 ; i < 50 ;i ++){//获取锁
            l.lock();try {if(num > 0){Thread.sleep(10);System.out.println(Thread.currentThread().getName()+"卖出一张票，剩余"+(--num)+"张");}} catch (Exception e) {e.printStackTrace();}finally{//释放锁
                l.unlock();}}}}