get WEEK_OF_YEAR in ISO 8601

Question

I try to get the "week of year", so the question is basically that I use this code to obtain the week of year but this give me wrong week. for example today is 27/04/16 so this code brings me 18 but I search online and the real week is 17. Whats I need to change in my code to get the week 17 ?

I try this..

    Calendar calendar = new GregorianCalendar();
    calendar.setTime(new Date());  
    weekOfYear = calendar.get(Calendar.WEEK_OF_YEAR);

And this.

    Calendar calendar = Calendar.getInstance()
    calendar.setTime(new Date());  
    weekOfYear = calendar.get(Calendar.WEEK_OF_YEAR);

In Wikipedia https://en.wikipedia.org/wiki/ISO_week_date#First_week

April have this weeks 14 to 17 May 18 to 22

This code is in Java 7 Android. Help me. please.

Thanks

This is just because of differences in your time zone with calendar's default time zone. Set calendar time zone to yours. — PEHLAJ, Apr 27 '16 at 11:54
Week of Year is Locale dependent. You can set it like : DateFormat sdf = new SimpleDateFormat("dd/MM/yyyy"); Date mydate = sdf.parse("27/04/2016");Calendar mycalendar = Calendar.getInstance(Locale.US); mycalendar.setTime(mydate ); — Stacey Morgan, Apr 27 '16 at 12:00

score 2 · Answer 1 · answered Apr 27 '16 at 13:45

2

So, the answer is use the German Locale to get the Week 17 of the year. In the ISO8901.

Calendar calDe = Calendar.getInstance(Locale.GERMAN);
calDe.setTime(new Date());
weekOfYear = calDe.get(Calendar.WEEK_OF_YEAR);

answered Apr 27 '16 at 13:45

exequielc

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get WEEK_OF_YEAR in ISO 8601

1 Answers1