两个线程交替打印奇数和偶数

最新推荐文章于 2025-05-13 11:02:07 发布

转载最新推荐文章于 2025-05-13 11:02:07 发布 · 347 阅读

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原文链接：http://www.cnblogs.com/trnanks/p/11517954.html

本文展示了一个使用Java实现的线程同步示例，通过两个线程分别打印奇数和偶数，演示了如何利用synchronized关键字和notifyAll、wait方法来确保线程间的正确同步。代码中定义了一个Count类，包含一个静态锁对象，以及两个实现了Runnable接口的类PrintEven和PrintOdd，分别用于打印偶数和奇数。

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public class ThreadTest {
    public static void main(String[] args) {
        Thread evenThread = new Thread(new PrintEven(),"打印奇数");
        Thread oddThread = new Thread(new PrintOdd(),"打印偶数");
        evenThread.start();
        oddThread.start();
    }
}

class Count{
    public static final Object lock = new Object();
}

class PrintEven implements Runnable{
    @Override
    public void run() {
        synchronized (Count.lock) {
            for(int i = 1; i < 10; i += 2) {
                System.out.println(Thread.currentThread().getName() + " : " + i);
                Count.lock.notifyAll();
                try {
                    Count.lock.wait();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
            Count.lock.notifyAll();
        }
    }
}

class PrintOdd implements Runnable{
    @Override
    public void run() {
        synchronized (Count.lock) {
            for(int i = 2; i < 10; i += 2) {
                System.out.println(Thread.currentThread().getName() + " : " + i);
                Count.lock.notifyAll();
                try {
                    Count.lock.wait();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
            Count.lock.notifyAll();
        }
    }
}

运行结果：

转载于:https://www.cnblogs.com/trnanks/p/11517954.html