What's the difference between adding DAY_OF_MONTH or DAY_OF_YEAR to a Calendar object?

Question

I want to increase a certain date by 1 day. I create a Calendar object like:

Calendar cal = Calendar.getInstance();
cal.set(Calendar.YEAR, 2012);
cal.set(Cal         


        

Answer 1

It doesn't make any difference when you call add. However the getters return different results :D

code snippet from GregorianCalendar#add

case DAY_OF_MONTH: // synonym of DATE
 case DAY_OF_YEAR:
 case DAY_OF_WEEK:
    break;