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();

    @Override
    public 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();
            }
        }
    }

}