/*
 
 
File name    		:		LL.java
Date			:		27 March 2013
Author			:		Shivam Tiwari
Organization		:		http://mycodedock.blogspot.in/
Description		:		Calculating number of days between two dates in java
 
 
*/
 
//import the Calendar and Date  library
import java.util.Calendar;
 
//import scanner library to get inputs
import java.util.Scanner;
 
//this is the main class
public class Main {
 
    //this is the main function
    public static void main(String[] args) {
 
        //create a new Scanner object
        Scanner ScannerObj = new Scanner(System.in);
 
        //create two calendar instance
        Calendar FirstDate = Calendar.getInstance();
        Calendar SecondDate = Calendar.getInstance();
 
        //integer variables to hold input from user
        int FirstDateInputYear, FirstDateInputMonth, FirstDateInputDay, SecondDateInputYear, SecondDateInputMonth, SecondDateInputDay;
 
        //get input from user
        System.out.println("Enter first date's year STRICTLY in YYYY syntax -");
        FirstDateInputYear = ScannerObj.nextInt();
 
        System.out.println("Enter first date's month STRICTLY in MM syntax -");
        FirstDateInputMonth = ScannerObj.nextInt();
 
        System.out.println("Enter first date's day STRICTLY in DD syntax -");
        FirstDateInputDay = ScannerObj.nextInt();
 
        System.out.println("Enter second date's year STRICTLY in YYYY syntax -");
        SecondDateInputYear = ScannerObj.nextInt();
 
        System.out.println("Enter second date's month STRICTLY in MM syntax -");
        SecondDateInputMonth = ScannerObj.nextInt();
 
        System.out.println("Enter second date's day STRICTLY in DD syntax -");
        SecondDateInputDay = ScannerObj.nextInt();
 
 
        //set these dates in calendar instances
        FirstDate.set(FirstDateInputYear, FirstDateInputMonth, FirstDateInputDay);
        SecondDate.set(SecondDateInputYear, SecondDateInputMonth, SecondDateInputDay);
 
        //get the days in between
        int DaysInBetween = daysInBetween(FirstDate.getTimeInMillis(),SecondDate.getTimeInMillis());
 
        //print result
        System.out.println("The number of days between " + FirstDateInputYear + " " + FirstDateInputMonth + " " + FirstDateInputDay + " and " + SecondDateInputYear + " " + SecondDateInputMonth + " " + SecondDateInputDay + " are " + DaysInBetween + ".");
    }
 
    //making the daysBetweenTwoDates function
    public static int daysInBetween(long f, long s){
 
        //24 hours in a day
        //60 minutes in each hour
        //60 seconds in each minute
        //1000 milliseconds in each second
        return (int)((s - f)/(1000*60*60*24));
    }
 
}