package day01;

import java.text.SimpleDateFormat;
import java.util.Timer;
import java.util.TimerTask;

public class Test01 {
  public static void main(String[] args) {
    final Timer timer = new Timer();
    //timer.scheduleAtFixedRate(new TimerTask() {
    timer.schedule(new TimerTask() {//分别注释这行和上面这行试一试效果
      int count = 1;

      @Override
      public void run() {
        count++;
        if (count == 10) {
          try {
            Thread.sleep(5000);
          } catch (InterruptedException e) {
            System.out.println("延迟5s");
            e.printStackTrace();
          }
        }
        SimpleDateFormat sf = new SimpleDateFormat(
            "yyyy MM dd hh:mm:ss");
        System.out.println("当前时间："
            + sf.format(System.currentTimeMillis()) + "计划时间："
            + sf.format(scheduledExecutionTime()));
      }
    }, 1000, 1000);
  }
}