多线程卖票

package com.yangyuanyuan.juc1205;


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

class Ticket //资源类 = 实例变量+实例方法
{
    private int number = 30;
    // List list = new ArrayList();
    Lock lock = new ReentrantLock();

    public void sale()
    {
        lock.lock();
        try
        {
            if(number > 0)
            {
                System.out.println(Thread.currentThread().getName()+"	卖出第："+(number--)+"	 还剩下： "+number);
            }
        }catch (Exception e){
            e.printStackTrace();
        }finally {
            lock.unlock();
        }
    }


}

/**
 *
 * 题目：三个售票员         卖出          30张票
 * 笔记：如何编写企业级的多线程代码
 *  固定的编程套路+模板是什么？
 *
 *  1 在高内聚低耦合的前提下，线程        操作      资源类
 *
 *    1.1 一言不合，先创建一个资源类
 *
 */
public class SaleTicketDemo01
{
    public static void main(String[] args)//主线程，一切程序的入口
    {
        Ticket ticket = new Ticket();


//
//        @FunctionalInterface
//        public interface Runnable {
//
//            public abstract void run();
//        }


        //2、lambda表达式
        new Thread(() -> { for (int i = 1; i <=40; i++) ticket.sale(); },"A").start();
        new Thread(() -> { for (int i = 1; i <=40; i++) ticket.sale(); },"B").start();
        new Thread(() -> { for (int i = 1; i <=40; i++) ticket.sale(); },"C").start();


        new Thread(new Runnable()
        {
            @Override
            public void run()
            {
                for (int i = 1; i <=40; i++) ticket.sale();
                {
                    ticket.sale();
                }
            }
        }, "A").start();


        //业务逻辑一行 括号可省略for (int i = 1; i <=40; i++) ticket.sale();



        //1、匿名内部类
        //Thread(Runnable target, String name) Allocates a new Thread object.
        /*new Thread(new Runnable()
        {
            @Override
            public void run()
            {
                for (int i = 1; i <=40; i++)
                {
                    ticket.sale();
                }
            }
        }, "A").start();
        new Thread(new Runnable()
        {
            @Override
            public void run()
            {
                for (int i = 1; i <=40; i++)
                {
                    ticket.sale();
                }
            }
        }, "B").start();
        new Thread(new Runnable()
        {
            @Override
            public void run()
            {
                for (int i = 1; i <=40; i++)
                {
                    ticket.sale();
                }
            }
        }, "C").start();
        */



    }
}