利用Date类计算生活时间

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

public class DateInput {
    public static void main(String[] args) throws ParseException {
        Scanner scanner = new Scanner(System.in);

//        System.out.print("请输入出生年份(xxxx)：");
//        String next1 = scanner.next();
//        System.out.print("请输入出生月份(xx)：");
//        String next2 = scanner.next();
//        System.out.print("请输入当月号数(xx)：");
//        String next3 = scanner.next();
//        String time=next1+"年"+next2+"月"+next3+"日";

        System.out.print("请输入出生年月日(xxxx年xx月xx日)：");
        String time=scanner.next();
        
        SimpleDateFormat format = new SimpleDateFormat("yyyy年MM月dd日");
        Date date = new Date();
        Date s=format.parse(time);
        long tm=date.getTime()-s.getTime();
        System.out.println("您已出生"+tm/1000/60/60/24+"天！"+
                "\n约"+tm/1000/60/60/24/365+"年!");
    }
}