定时器Timer&ScheduledThreadPoolExecutor

定时器Timer&ScheduledThreadPoolExecutor

/**
 * @ClassName: TimerTest
 * @author: daniel.zhao
 * @date: 2018年10月15日 下午3:04:26
 */
public class TimerTest {

	private static final Logger logger = Logger.getLogger(TimerTest.class.getSimpleName());

	@Test
	public void test() throws IOException {
		Timer timer = new Timer(true);
		timer.schedule(new TimerTask() {

			@Override
			public void run() {
				logger.info("time: " + System.currentTimeMillis());
			}
		}, 2000, 4000); // 2000表示第一次执行任务延迟时间，40表示以后每隔多长时间执行一次run里面的任务
		System.in.read();
	}
}

/**
 * @ClassName: ScheduledThreadPoolExecutorTest
 * @author: daniel.zhao
 * @date: 2018年10月15日 下午3:15:01
 */
public class ScheduledThreadPoolExecutorTest {

	private static final Logger logger = Logger.getLogger(ScheduledThreadPoolExecutorTest.class.getSimpleName());

	@Test
	public void test() throws IOException {
		ScheduledThreadPoolExecutor executor = new ScheduledThreadPoolExecutor(2);
		executor.scheduleAtFixedRate(new Runnable() {

			@Override
			public void run() {
				logger.info("time: " + System.currentTimeMillis());
			}
		}, 2000, 40, TimeUnit.MILLISECONDS); // 2000表示首次执行任务的延迟时间，40表示每次执行任务的间隔时间，TimeUnit.MILLISECONDS执行的时间间隔数值单位
		System.in.read();
	}
}