Determining the Number of Days in a Month
This example uses the Calendar class to determine the number of days
in the month of a particular year.
// Create a calendar object of the desired month
Calendar cal = new GregorianCalendar(1999, Calendar.FEBRUARY, 1);
// Get the number of days in that month
int days = cal.getActualMaximum(Calendar.DAY_OF_MONTH); // 28
// Try month in a leap year
cal = new GregorianCalendar(2000, Calendar.FEBRUARY, 1);
days = cal.getActualMaximum(Calendar.DAY_OF_MONTH); // 29
Will it work ? Have you checked in 1.5