两个线程一个打印偶数一个打印奇数直到等于100时停止

最新推荐文章于 2023-12-15 16:00:38 发布

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本文介绍了一个使用Java进行并发编程的示例，通过两个线程交替打印奇数和偶数到100的过程，展示了synchronized关键字、wait和notifyAll方法的使用。此示例有助于理解线程同步和原子操作的概念。

@RunWith(SpringJUnit4ClassRunner.class)
public class ThreadTest {
    private  Object lock = new Object();
    private AtomicInteger a = new AtomicInteger(0);

    @Test
    public void tu() {
        new Thread(new lock(lock,a),"偶数").start();
        try {
            Thread.sleep(10);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        new Thread(new lock(lock,a),"奇数").start();
    }
}
class lock implements Runnable{
    private  Object lock = null;
    private  AtomicInteger a;

    public lock(Object lock,AtomicInteger a) {
        this.lock = lock;
        this.a = a;
    }

    @Override
    public void run() {
        while (a.intValue() <= 100) {
            synchronized (lock) {
                System.out.println(Thread.currentThread().getName()+":"+ a.intValue());
                a.addAndGet(1);
                lock.notifyAll();
                try {
                    if (a.intValue() <= 100) {
                        lock.wait();
                    }
                }catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }
    }
}