타이머 컨트롤

package com.meiran;

import org.junit.Test;

import java.util.Date;
import java.util.Timer;
import java.util.TimerTask;

/**
 *     
 */
public class TimerTest {
    @Test
    public void test() {
        Timer timer = new Timer();
        TimerTask task = new TimerTask() {
            @Override
            public void run() {
                System.out.println("bomb!");
            }
        };
        //2    run()
        timer.schedule(task, 2000);
        //     ，main         ，JVM       Timer2     。
        while (true) {
            System.out.println(new Date().getSeconds());
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }

    @Test
    public void test2() {
        Timer timer = new Timer();
        TimerTask task = new TimerTask() {
            @Override
            public void run() {
                System.out.println("bomb!");
            }
        };
        //2    run(),   2     
        timer.schedule(task, 2000, 2000);
        while (true) {
            System.out.println(new Date().getSeconds());
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }

    /**
     *         ，        ，      
     */
    @Test
    public void test3() {
        Timer timer = new Timer();
        TimerTask task = new MyTimerTask();
        timer.schedule(task, 2000);
        while (true) {
            System.out.println(new Date().getSeconds());
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }

    private int count = 0;

    class MyTimerTask extends TimerTask {
        @Override
        public void run() {
            count = (count + 1) % 2;
            System.out.println("bomb!");
            Timer timer = new Timer();
            TimerTask task = new MyTimerTask();
            timer.schedule(task, 2000 + 2000 * count);
        }
    }
}