Java：利用java Timer类实现定时执行任务的功能

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

public class TimerDemo {
    public static String getCurrentTime() {
        Date date = new Date();
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        return sdf.format(date);
    }

    public static void main(String[] args) throws InterruptedException {
        System.out.println("main start:"+getCurrentTime());
        startTimer();
        Thread.sleep(1000*5); //休眠5秒
        System.out.println("main   end:"+getCurrentTime());
    }

    public static void startTimer(){
        TimerTask task = new TimerTask() {
            @Override
            public void run() {
                System.out.println("task   run:"+getCurrentTime());
            }
        };
        Timer timer = new Timer();
        timer.schedule(task, 0);
    }
}