getting the start date for a week number

[Dar Var]

Hi,
I am trying to get the start date for a week when given the week number an year.

My calender setting will be

Calendar gregorianCalendar = new GregorianCalendar();
gregorianCalendar.setFirstDayOfWeek(Calendar.MONDAY);
gregorianCalendar.setMinimalDaysInFirstWeek(4);

for example:
if my method is passed in 40/2005 i.e. week 40 in year 2005
The method should pass back 03/10/2005 i.e. 3rd Oct 2005

[Ritesh Agrawal]

Hi Dar,

I have added a couple of lines to your code. Lets see if this is what you were looking for.

 
import java.util.Calendar;
import java.util.GregorianCalendar;
 
public class FirstDayofWeek {
 
    public static void main(String[] args) {
        Calendar gregorianCalendar = new GregorianCalendar();
        gregorianCalendar.setFirstDayOfWeek(Calendar.MONDAY);
        gregorianCalendar.setMinimalDaysInFirstWeek(4);
        
        int numWeekofYear = 40;  //INPUT
        int year = 2005;         //INPUT
        
        gregorianCalendar.set(Calendar.YEAR , year);
        gregorianCalendar.set(Calendar.WEEK_OF_YEAR , numWeekofYear);
       
        System.out.println( gregorianCalendar.get(Calendar.DAY_OF_MONTH) 
                            + "/" + (gregorianCalendar.get(Calendar.MONTH) 
                            + 1 ) + "/" + gregorianCalendar.get
                            (Calendar.YEAR));
    }
}
 
Output:
3/10/2005
 

Cheers!!!

[ October 03, 2005: Message edited by: Ritesh Agrawal ]