多线程 《多线程操作同一变量》

【代码说明】

两个线程“Window1”和“Window2”操作同一变量ticketCount(卖票)。

【代码示例】

1、MyThread.java

package com.wcs.java.thread;public class MyThread implements Runnable{        private int ticketCount;        public MyThread(int ticketCount) {        this.ticketCount = ticketCount;    }         public synchronized int sellTicket() {        return --ticketCount;    }    @Override    public void run() {        while(ticketCount > 0) {            System.out.println(Thread.currentThread().getName() + " sell one ticket,remainder ticket count is : " + sellTicket());        }    }}

2、TestMyThread.java

package com.wcs.java.thread;public class TestMyThread {    public static void main(String[] args) {        MyThread myThread = new MyThread(10);        Thread t1 = new Thread(myThread, "Window 1");        Thread t2 = new Thread(myThread, "Window 2");        t1.start();        t2.start();    }}

【运行结果】

Window 1 sell one ticket,remainder ticket count is : 9
Window 1 sell one ticket,remainder ticket count is : 7
Window 1 sell one ticket,remainder ticket count is : 6
Window 2 sell one ticket,remainder ticket count is : 8
Window 2 sell one ticket,remainder ticket count is : 4
Window 2 sell one ticket,remainder ticket count is : 3
Window 2 sell one ticket,remainder ticket count is : 2
Window 2 sell one ticket,remainder ticket count is : 1
Window 2 sell one ticket,remainder ticket count is : 0
Window 1 sell one ticket,remainder ticket count is : 5