Executors.newSingleThreadExecutor() 测试

最新推荐文章于 2025-07-05 07:30:00 发布

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本文通过Qiao3类的main方法展示了如何使用`Executors.newSingleThreadExecutor()`创建一个单线程执行器。代码创建了三个线程，但执行器确保同一时间仅有一个线程运行，打印数字序列111到666，同时主线程在所有任务启动后立即打印'ok'。

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public class Qiao3 {
    public static void main(String[] args) {
        Thread thread1 = new Thread(()->{
            System.out.println("111");
            try {
                Thread.sleep(5000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            System.out.println("222");
        });
        Thread thread2 = new Thread(()->{
            System.out.println("333");
            try {
                Thread.sleep(5000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            System.out.println("444");
        });
        Thread thread3 = new Thread(()->{
            System.out.println("555");
            try {
                Thread.sleep(5000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            System.out.println("666");
        });
        ExecutorService executorService = Executors.newSingleThreadExecutor();
        executorService.execute(thread1);
        executorService.submit(thread2);
        executorService.execute(thread3);
        System.out.println("ok");

    }
}