java coding For getting no of Days in a month

import java.util.Scanner;

public class DateDemo
{
public static void main(String[] args)
{
//Create scanner object to obtain input from user
Scanner input = new Scanner (System.in);

int MonthNum; //To hold the month from user input
int Year; //To hold the year
int numDays;
String Month;

System.out.print("Please enter the Month #");
MonthNum = input.nextInt();
System.out.print("Please enter the Year");
Year = input.nextInt();

if (MonthNum == 2)
{
if ( (Year % 4 == 0) && (Year % 400 == 0)
&& !(Year % 100 == 0) )
numDays = 29;
else
numDays = 28;
}
else if (MonthNum == 1 || MonthNum == 3 || MonthNum == 5 || MonthNum == 7 || MonthNum == 8
|| MonthNum == 10 || MonthNum == 12)
numDays = 31;
else
numDays = 30;

if (MonthNum == 1)
Month = "January";
else if (MonthNum == 2)
Month = "Feburary";
else if (MonthNum == 3)
Month = "March";
else if (MonthNum == 4)
Month = "April";
else if (MonthNum == 5)
Month = "May";
else if (MonthNum == 6)
Month = "June";
else if (MonthNum == 7)
Month = "July";
else if (MonthNum == 8)
Month = "August";
else if (MonthNum == 9)
Month = "September";
else if (MonthNum == 10)
Month = "October";
else if (MonthNum == 11)
Month = "November";
else if (MonthNum == 12)
Month = "December";


System.out.println(Month + " " + Year " has " + numDays "." );
System.out.println(Month);
System.out.println(numDays);
}
}

Difference Between Two Days

package org.kodejava.example.java.util;

02.

03.import java.util.Calendar;

04.

05.public class DateDifferentExample

06.{

07. public static void main(String[] args)

08. {

09. // Creates two calendars instances

10. Calendar cal1 = Calendar.getInstance();

11. Calendar cal2 = Calendar.getInstance();

12.

13. // Set the date for both of the calendar instance

14. cal1.set(2006, 12, 30);

15. cal2.set(2007, 05, 03);

16.

17. // Get the represented date in milliseconds

18. long milis1 = cal1.getTimeInMillis();

19. long milis2 = cal2.getTimeInMillis();

20.

21. // Calculate difference in milliseconds

22. long diff = milis2 - milis1;

23.

24. // Calculate difference in seconds

25. long diffSeconds = diff / 1000;

26.

27. // Calculate difference in minutes

28. long diffMinutes = diff / (60 * 1000);

29.

30. // Calculate difference in hours

31. long diffHours = diff / (60 * 60 * 1000);

32.

33. // Calculate difference in days

34. long diffDays = diff / (24 * 60 * 60 * 1000);

35.

36. System.out.println("In milliseconds: " + diff + " milliseconds.");

37. System.out.println("In seconds: " + diffSeconds + " seconds.");

38. System.out.println("In minutes: " + diffMinutes + " minutes.");

39. System.out.println("In hours: " + diffHours + " hours.");

40. System.out.println("In days: " + diffDays + " days.");

41. }

42.}