java. util. Calendar WEEK_ OF_ Year provides 1 for 365 and 366 days

An attempt was made to find the week for the given date

Question: December 29, 2012 = week 52 December 30, 2012 = week 1 December 30, 2013 = week 52 December 31, 2013 = week 1

When current year share = 365 or 366, it provides one week of the year to 1 It seems that something has happened How to solve this problem?

import java.util.Calendar;
import java.util.GregorianCalendar;

public class cal2{
   public static void main (String[] args) {

   Calendar mycal = GregorianCalendar.getInstance();  

   mycal.setLenient(false);

   int year  = 2012;
   int month = 11;  //0=Jan,11=Dec
   int date  = 29; 

   mycal.set(year,1);
   mycal.setFirstDayOfWeek(mycal.get(mycal.DAY_OF_WEEK));

   mycal.set(year,month,date);
   System.out.println("\n>>>>>>>>WEEK :"+mycal.get(mycal.WEEK_OF_YEAR));

   // System.out.println("\nDATE :"+mycal);

   }

}

Solution

See here from docs

First week