Question

用java写一个程序可以计算2个日期之间的天数差.

Answer 1

import java.util.*;

public class MyDate{

int day;

int month;

int year;

public MyDate(){}

public MyDate(int day,int month,int year){

this.day = day;

this.month = month;

this.year = year;

}

public void funtion(MyDate d){

int newDay = d.day;

int newMonth = d.month;

int newYear = d.year;

Calendar c1 = Calendar.getInstance();

c1.set(newYear,newMonth,newDay);

long n1 = c1.getTimeInMillis();

Calendar c2 = Calendar.getInstance();

c2.set(year,month,day);

long n2 = c2.getTimeInMillis();

System.out.println( "相差天数为:" + Math.abs((n1 - n2)/24/3600000)); }

public static void main(String[] args){

MyDate d1 = new MyDate(1,1,2008);

MyDate d2 = new MyDate(2,1,2001);

d1.funtion(d2);

}

}