Java计算从今天到生日的时间跨度

/* 

 * Calculate the span of time from today until your birthday, assuming your

 * birthday occured on January 1st. The calculation is done using both

 * months and days (using Period) and days only (using ChronoUnit.between).

 */

import java.time.LocalDate;

import java.time.Month;// from N o w J a v a . c o m

import java.time.Period;

import java.time.temporal.ChronoUnit;


import java.io.PrintStream;


public class Birthday {


    public static void main(String[] args) {


        LocalDate today = LocalDate.now();

        LocalDate birthday = LocalDate.of(1960, Month.JANUARY, 1);
/** from N o w  J a v a  .   c o m**/

        LocalDate nextBDay = birthday.withYear(today.getYear());


        //If your birthday has occurred this year already, add 1 to the year.

        if (nextBDay.isBefore(today) || nextBDay.isEqual(today)) {

            nextBDay = nextBDay.plusYears(1);

        }


        Period p = Period.between(today, nextBDay);

        long p2 = ChronoUnit.DAYS.between(today, nextBDay);

        System.out.println("There are " + p.getMonths() + " months, and "

                + p.getDays() + " days until your next birthday. (" + p2

                + " total)");

    }

}