Getting incorrect week while using Calendar class

Question

when i ran the following file , I am getting the incorrect results.
import java.util.*;
public class Week
public static void main( String args[] ) throws Exception
//String sdate = "30-DEC-2006";
String sdate = "31-DEC-2006";
String sdate1 = "01-JAN-2007";
java.text.SimpleDateFormat sdf = new java.text.SimpleDateFormat("dd-MMM-yyyy");
java.util.Date dt = sdf.parse(sdate);
java.util.Date dt1 = sdf.parse(sdate1);
Calendar calendar = Calendar.getInstance();
calendar.setFirstDayOfWeek(Calendar.SUNDAY);
calendar.setMinimalDaysInFirstWeek(7);
calendar.setTime(dt);
System.out.println("Week of year for 31-DEC-2006 is : =>"+calendar.get(Calendar.WEEK_OF_YEAR));
calendar.setTime(dt1);
System.out.println("Week of year for 01-JAN-2007 is : =>"+calendar.get(Calendar.WEEK_OF_YEAR));
output:
Week of year for 31-DEC-2006 is : =>53
Week of year for 01-JAN-2007 is : =>53
Can anyone tell me how to fix this issues.
Thanks

Answer 1

Did you listen about documentation? It takes about one minute to find followed:
For example, a specific Calendar subclass may designate the week before week 1 of a year as week n of the previous year.
You should spend few minutes more to find how to fix it.