Bug or featur

[urswag]

Bug or feature?
The result shoud be Dec 9 1966
but I get
birthday = Mon Jan 09 00:00:00 CET 1967
What can I do else?

 Calendar calendar = GregorianCalendar.getInstance();
 calendar.clear();
 calendar.set(Calendar.YEAR, 1966);
 calendar.set(Calendar.DAY_OF_MONTH, 9);
 calendar.set(Calendar.MONTH, 12);
 Date birthday = calendar.getTime();

 System.out.println("birthday = " + birthday);

[lafr]

http://java.sun.com/j2se/1.5.0/docs/api/java/util/Calendar.html#MONTH

[urswag]

Thanks
I recognized it, Janary is 0.