java随笔一（关于定时任务）

public class ThreadTest {

    class MyTask implements Runnable{

        public void run() {
            say();
        }
    }

    public void init(){
        say();
        MyTask myTask = new MyTask();
        ScheduledExecutorService executorService = Executors.newScheduledThreadPool(1);
        executorService.scheduleAtFixedRate(myTask,5,5,TimeUnit.SECONDS);
    }

    public static void say(){
        System.out.println("Hello world");
    }

    public static void main(String[] args)  {
        ThreadTest threadTest = new ThreadTest();
        threadTest.init();
    }
}