How to check given timestamp is weekend?

Question

Can anyone help me to complete this function in Java? thanks

// e.g. "20130218001203638"
boolean isWeekend(String date)
{
    ... ...
}

Find a post giving the exact answer I want.

Check A Date String If Weekend In Java

Lookup calendar & date classes. I think Calendar since date got deprecated — Caffeinated, May 14 '13 at 15:41
That string can be parsed into a `Calendar` using a `DateFormatter` (IIRC). A `Calendar` can tell you the day of the week. — Lee Meador, May 14 '13 at 15:42
Possible duplicate of [java example to get all weekend dates in a given month](http://stackoverflow.com/questions/3272454/java-example-to-get-all-weekend-dates-in-a-given-month) — Smit, May 14 '13 at 15:45
possible duplicate of [How to get localized short day-in-week name (Mo/Tu/We/Th...)](http://stackoverflow.com/questions/3790954/how-to-get-localized-short-day-in-week-name-mo-tu-we-th) — Burkhard, May 14 '13 at 15:48

Subhrajyoti Majumder · Answer 1 · 2013-05-14T15:50:50.053

5

Calendar#get(DAY_OF_WEEK) it return values SUNDAY, MONDAY, ...

what you can just conditionally check with Calendar.SATURDAY or Calendar.SUNDAY.

edited May 14 '13 at 15:50

answered May 14 '13 at 15:44

Subhrajyoti Majumder

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score 1 · Answer 2 · answered May 14 '13 at 15:48

Something like this should help:

boolean isWeekend = false;
Date date = new Date();
//assuming your date string is time in long format, 
//if not then use SimpleDateFormat class
date.setTime(Long.parseLong("20130218001203638"));
Calendar calendar = new GregorianCalendar();
calendar.setTime(date);

if(calendar.get(Calendar.DAY_OF_WEEK) == Calendar.SATURDAY ||
         calendar.get(Calendar.DAY_OF_WEEK) == Calendar.SUNDAY){
    isWeekend = true;
}
return isWeekend;

score 0 · Answer 3 · answered May 14 '13 at 15:46

Just as date calculation is wearisome

SimpleDateFormat df = new SimpleDateFormat("yyyyMMdd");
Date d = df.parse(date);
Calendar cal = Calendar.getInstance();
cal.setTime(d);
int wday = cal.get(Calendar.DAY_OF_WEEK);
return wday == Calendar.SATURDAY || wday == Calendar.SUNDAY;

How to check given timestamp is weekend?

3 Answers3