Using Calendar.set() method problem

Question

Hi all,
First of all sorry to bother with such a trivial(?) matter but I cannot solve it by myself.
I have a piece of code which I simply want to handle the current date with the GregorianCalendar object so that the date would be set to the Calendar.SUNDAY (of the current week). Simple enough?
Code as follows:
import java.util.*;
import java.text.*;
public class Foo
public static void main(String[] args)
     Foo foo = new Foo();
     Date newdate = foo.bar();
public Date bar()
     GregorianCalendar m_calendar = new GregorianCalendar(new Locale("fi","FI"));
     m_calendar.setFirstDayOfWeek(Calendar.MONDAY);
     Date newDate = null;
     try
          m_calendar.setTime(new Date());
          System.out.println("Calendar='" + m_calendar.toString() + "'");
          m_calendar.set(Calendar.DAY_OF_WEEK, Calendar.SUNDAY);
          SimpleDateFormat sdf = new SimpleDateFormat("yyyy.MM.dd");
          StringBuffer sb = new StringBuffer();
          sdf.format(m_calendar.getTime(), sb, new FieldPosition(0));
          System.out.println("Date in format (" + sdf.toPattern()          + ") = '" + sb.toString() + "'");
     catch(Exception e)
          e.printStackTrace();
     return m_calendar.getTime();
This should work at least accoring to my understanding of the SDK documentation as follows with
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.1_01-b01)
Java HotSpot(TM) Client VM (build 1.4.1_01-b01, mixed mode)
Calendar='java.util.GregorianCalendar[time=1054636838494,areFieldsSet=true,areAllFieldsSet=true,lenient=true,zone=sun.util.calendar.ZoneInfo[id="Europe/Helsinki",offset=7200000,dstSavings=3600000,useDaylight=true,transitions=118,lastRule=java.util.SimpleTimeZone[id=Europe/Helsinki,offset=7200000,dstSavings=3600000,useDaylight=true,startYear=0,startMode=2,startMonth=2,startDay=-1,startDayOfWeek=1,startTime=3600000,startTimeMode=2,endMode=2,endMonth=9,endDay=-1,endDayOfWeek=1,endTime=3600000,endTimeMode=2]],firstDayOfWeek=2,minimalDaysInFirstWeek=4,ERA=1,YEAR=2003,MONTH=5,WEEK_OF_YEAR=23,WEEK_OF_MONTH=1,DAY_OF_MONTH=3,DAY_OF_YEAR=154,DAY_OF_WEEK=3,DAY_OF_WEEK_IN_MONTH=1,AM_PM=1,HOUR=1,HOUR_OF_DAY=13,MINUTE=40,SECOND=38,MILLISECOND=494,ZONE_OFFSET=7200000,DST_OFFSET=3600000]'
Date in format (yyyy.MM.dd) = '2003.06.08'
Which is the sunday of this week. But as I run the same code with:
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.1.06-020625-14:20)
Java HotSpot(TM) Server VM (build 1.3.1 1.3.1.06-JPSE_1.3.1.06_20020625 PA2.0, mixed mode)
Calendar='java.util.GregorianCalendar[time=1054636630703,areFieldsSet=true,areAllFieldsSet=true,lenient=true,zone=java.util.SimpleTimeZone[id=Europe/Helsinki,offset=7200000,dstSavings=3600000,useDaylight=true,startYear=0,startMode=2,startMonth=2,startDay=-1,startDayOfWeek=1,startTime=3600000,startTimeMode=2,endMode=2,endMonth=9,endDay=-1,endDayOfWeek=1,endTime=3600000,endTimeMode=2],firstDayOfWeek=2,minimalDaysInFirstWeek=4,ERA=1,YEAR=2003,MONTH=5,WEEK_OF_YEAR=23,WEEK_OF_MONTH=1,DAY_OF_MONTH=3,DAY_OF_YEAR=154,DAY_OF_WEEK=3,DAY_OF_WEEK_IN_MONTH=1,AM_PM=1,HOUR=1,HOUR_OF_DAY=13,MINUTE=37,SECOND=10,MILLISECOND=703,ZONE_OFFSET=7200000,DST_OFFSET=3600000]'
Date in format (yyyy.MM.dd) = '2003.06.01'
Which is sunday of the previous week and incorrect in my opinion. The latter result is run on HP-UX B.11.11 U 9000/800 and first on NT.
Any ideas why this is happening? Thanks in advance!
Greets, Janne

Answer 1

Thanks for your answer!
The problem is that I have to work with this older SDK version. :) But I got it solved by using the roll method with the following syntax:
int delta = [dayToSet] - m_calendar.get(Calendar.DAY_OF_WEEK);
in which the delta is of course the difference (negative or positive to the current day of the week)
and then using the roll call:
m_calendar.roll(Calendar.DAY_OF_WEEK, delta);
which doesn't alter the current week. So this works if someone else has a similar problem with the version 1.3.1
Greets, Janne