本文展示了一个使用Java多线程实现的售票程序案例。通过创建三个线程并发执行售票任务，演示了线程间共享资源的问题及解决方法。代码中使用了`synchronized`关键字来确保票务操作的原子性，防止出现票数错误。
package sell_ticket;
public class ThreadTicket {
<wbr><wbr><wbr><wbr> public static void main(String[] args) {<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> MyThread m = new MyThread();<wbr><wbr><wbr><wbr><wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> Thread t1 = new Thread(m);<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> Thread t2 = new Thread(m);<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> Thread t3 = new Thread(m);<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> t1.start();<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> t2.start();<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> t3.start();<br><wbr><wbr><wbr><wbr><wbr><wbr> }<wbr><wbr><wbr><br><wbr><wbr><wbr><wbr><br><wbr><wbr><wbr><wbr><br> }<br><br> class MyThread implements Runnable{<br><wbr><wbr><wbr> private int ticket=100;<br><wbr><wbr><wbr><br><wbr><wbr><wbr><br><wbr><wbr><wbr> public void run(){<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr> while(true){<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>try {<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>Thread.sleep(1000);<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>} catch (InterruptedException e) {<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>// TODO Auto-generated catch block<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>e.printStackTrace();<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> }<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>//用synchronized包起来，形成同步代码块,但后来发现用不用其实一样<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>synchronized(this){<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>if(ticket>0){<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>
public class ThreadTicket {
<wbr><wbr><wbr><wbr> public static void main(String[] args) {<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> MyThread m = new MyThread();<wbr><wbr><wbr><wbr><wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> Thread t1 = new Thread(m);<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> Thread t2 = new Thread(m);<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> Thread t3 = new Thread(m);<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> t1.start();<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> t2.start();<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> t3.start();<br><wbr><wbr><wbr><wbr><wbr><wbr> }<wbr><wbr><wbr><br><wbr><wbr><wbr><wbr><br><wbr><wbr><wbr><wbr><br> }<br><br> class MyThread implements Runnable{<br><wbr><wbr><wbr> private int ticket=100;<br><wbr><wbr><wbr><br><wbr><wbr><wbr><br><wbr><wbr><wbr> public void run(){<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr> while(true){<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>try {<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>Thread.sleep(1000);<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>} catch (InterruptedException e) {<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>// TODO Auto-generated catch block<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>e.printStackTrace();<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> }<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>//用synchronized包起来，形成同步代码块,但后来发现用不用其实一样<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>synchronized(this){<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>if(ticket>0){<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>
扫一扫
被折叠的 条评论
为什么被折叠?
到【灌水乐园】发言
