java=last-date-of-month
// Create a calendar object and set year and moth
Calendar mycal = new GregorianCalendar(1999, Calendar.FEBRUARY, 1);
// Get the number of days in that month
int daysInMonth = mycal.getActualMaximum(Calendar.DAY_OF_MONTH); // 28
// Try month in a leap year
mycal = new GregorianCalendar(2000, Calendar.FEBRUARY, 1);
daysInMonth= mycal.getActualMaximum(Calendar.DAY_OF_MONTH); // 29
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