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最新推荐文章于 2024-11-10 08:00:00 发布

Ssun_135

最新推荐文章于 2024-11-10 08:00:00 发布

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本文链接：https://blog.youkuaiyun.com/qq_27344913/article/details/79856268

本文提供了一个使用synchronized关键字实现线程同步的Java示例。通过两个线程交替打印递增计数器的值，展示了如何确保线程安全地访问共享资源。

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class SyncThread implements Runnable {
    private String name;

    private static int count;

    public SyncThread(String name){
        this.name=name;
    }
    public SyncThread() {
        count = 0;
    }

    public  void run() {
        synchronized(this) {
            for (int i = 0; i < 5; i++) {
                try {
                    System.out.println(Thread.currentThread().getName() + ":" + (count++));
                    Thread.sleep(100);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }
    }

    public int getCount() {
        return count;
    }

}//    public static void main(String[] args) {

//        SyncThread syncThread = new SyncThread();
//        Thread thread1 = new Thread(syncThread, "SyncThread1");
//        Thread thread2 = new Thread(syncThread, "SyncThread2");
//        thread1.start();
//        thread2.start();
//    }

输出如下：SyncThread1:1
SyncThread1:2
SyncThread1:3
SyncThread1:4
SyncThread2:5
SyncThread2:6
SyncThread2:7
SyncThread2:8

SyncThread2:9

public class SyncThreadTest {
    public static void main(String[] args) {

//        SyncThread syncThread = new SyncThread();
//        Thread thread1 = new Thread(syncThread, "SyncThread1");
//        Thread thread2 = new Thread(syncThread, "SyncThread2");
        new Thread(new SyncThread("SyncThread1") ).start();
        new Thread(new SyncThread("SyncThread2") ).start();
//        thread1.start();
//        thread2.start();
    }
}