第12次作业--你的生日

题目：利用Calendar类计算自己的出生日期距今天多少天，再将自己的出生日期利用SimpleDateFormat类设定的格式输出显示

package cn.exercise;

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Scanner;

/**
 * @author WH
 * @project Java
 * @package cn.exercise
 * @date 2019/11/24 17:38
 */
public class WhBirthday {
    public static void main(String[] args) {
        System.out.println("input your birthday:");
        Date now = new Date();
        Scanner scanner=new Scanner(System.in);
        int year=scanner.nextInt();
        int month=scanner.nextInt();
        int day=scanner.nextInt();
        Calendar calendar=Calendar.getInstance();
        calendar.set(1998, Calendar.AUGUST,15);
        SimpleDateFormat matter=new SimpleDateFormat("yyyy年MM月dd日");
        System.out.println(matter.format(calendar.getTime()));
        int dayday= (int)((now.getTime()-calendar.getTimeInMillis())/(1000*60*60*24));
        System.out.println(dayday);
    }
}