java.time 时间和简单任务

java.time是jdk1.8才用的

　　时间管理

package com.test.time;


import java.time.*;

/**
 * Created by MY on 2017/8/7.
 */
public class TimeTest {
    public static void main(String[] args) {
        //当前日期 输出为2017-08-07
        LocalDate date = LocalDate.now();
        //三天后 2017-08-10
        LocalDate days = date.plusDays(3);
        //当前时间  12:03:13.276
        LocalTime time = LocalTime.now();
        //五分钟前 11:59:32.276
        LocalTime time1 = time.minusMinutes(5);
        //生日
        MonthDay monthDay = MonthDay.of(8, 7);
       //获取当前的月和日
        MonthDay day = MonthDay.from(date);
        //获取月   AUGUST
        Month month = Month.from(date);
        //获取周几 Monday
        DayOfWeek week = DayOfWeek.from(date);
        if (monthDay.equals(day)){
            System.out.println("生日");
        }else{
            System.out.println("不是");
        }
        /*System.out.println(month);
        System.out.println(day);*/
        LocalDateTime now = LocalDateTime.now();
        System.out.println(now);
    }
}

　　任务管理

package com.test.time;

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

/**
 * Created by MY on 2017/8/7.
 */
public class MyTask {
    public static void main(String[] args) {
        //计时器
        Timer timer=new Timer();
        //执行任务
        timer.schedule(new TimerTask() {
            @Override
            public void run() {
                System.out.println("yj");
            }
            //延迟三秒，每秒执行一次
        },3000,1000);
    }
}