Calendar - Year, Month and Day

Calendar calendar = new GregorianCalendar();
Calendar expCalendar = new GregorianCalendar(Calendar.YEAR, Calendar.DECEMBER, 31);
abcTO.setExpirationDate(expCalendar.getTime());

To add 3 years to the current year and set to last day of 3rd successive calender year.

Calendar expCalendar = new GregorianCalendar(calendar.get(Calendar.YEAR)+3, Calendar.DECEMBER, 31);