Problem in getting exact week of the year (Reposted)

Question

Hi,
Can somebody respond to my posting please. I am posting it second time since nobody replied me till yet.
I make use of below code to get exact week of the year.
// Assumes the provided date is in 'ddMMM' format
SimpleDateFormat sdf = new SimpleDateFormat ( "ddMMM" );
Date parsedDate = sdf.parse( dateString );
Calendar calendar = Calendar.getInstance();
calendar.setTime( parsedDate );
int week = calendar.get( Calendar.WEEK_OF_YEAR );
Problem which I am facing is that when I pass "dateString" as
"22Mar" then it gives week as 13 instead of 12 for year 2007.
I find out that making use of cal.setFirstDayOfWeek( Calendar.MONDAY ); and cal.setMinimalDaysInFirstWeek( 4 ); statement eradicates the problem, ideally values should be
cal.setFirstDayOfWeek( Calendar.SUNDAY); and cal.setMinimalDaysInFirstWeek( 7); because for US first day of the week should be SUNDAY and minimum number of days should be 7 when I start from Sunday.
Please help me to understand the resolution. Is it correct or not?
Is it possible to solve the problem without specifying cal.setFirstDayOfWeek( Calendar.MONDAY ); and cal.setMinimalDaysInFirstWeek( 4 ).
This seems to be hardcoded for each year.

Answer 1

What am I missing? If you can't accept the ISO rules then you are going to define and implement your own algorithm. UsingSimpleDateFormat sdf = new SimpleDateFormat( "yyyy/MM/dd" );
        Date parsedDate = sdf.parse( "2007/01/01" );
        Calendar calendar = Calendar.getInstance();
        calendar.setFirstDayOfWeek(Calendar.MONDAY);
        calendar.setTime( parsedDate );
        for (int count = 0; count < 366; count++)
            int week = calendar.get( Calendar.WEEK_OF_YEAR );
            System.out.println(week + "\t" + sdf.format(calendar.getTime()));
            calendar.add(Calendar.DAY_OF_YEAR, 1);
        }I get the week as 12 not 13 but I specified THIS year. If you don't specify a year then, quite rightly, it takes 1970.