CODEWITHSUNDEEP
javadatecalendar
Saurabh
Saurabh

Reputation: 159

Calendar not working fine

I am a 3 month old java student. For one of my module I tried to make first day of week as tuesday(so that a real friday should now be at index 3) but it didn't show expected result.

I am inputting day through scanner. Below is the concerned piece of code and output:

 Calendar c= Calendar.getInstance();
    c.setFirstDayOfWeek(Calendar.TUESDAY);

    c.setTime(date);
    int dayOfWeek=c.get(Calendar.DAY_OF_WEEK);
    System.out.println(dayOfWeek);



Output:

Enter the date(dd/mm/yyyy):
03/07/2014
6

Don't know where I am wrong. Tried a lot googling around and even set minimalDAysOfFirstWeek but nothing working out. What i want is 03/07/2014 to be shown as index 3. How to achieve so?

Upvotes: 1

Views: 176

Answers (2)

jamp
jamp

Reputation: 2275

switch (c.get(Calendar.DAY_OF_WEEK)) {
case Calendar.TUESDAY:
    return 0;

case Calendar.WEDNESDAY:
    return 1;

// And so on...

default:
    break;
}

Upvotes: 0

Jon Skeet
Jon Skeet

Reputation: 1499800

I think you've misunderstood the purpose of setFirstDayOfWeek.

That doesn't change c.get(Calendar.DAY_OF_WEEK) works at all - it changes the result of calling c.get(Calendar.WEEK_OF_MONTH) and c.get(Calendar.WEEK_OF_YEAR), as per the documentation:

When setting or getting the WEEK_OF_MONTH or WEEK_OF_YEAR fields, Calendar must determine the first week of the month or year as a reference point. The first week of a month or year is defined as the earliest seven day period beginning on getFirstDayOfWeek() and containing at least getMinimalDaysInFirstWeek() days of that month or year.

In other words, Sunday is always Sunday... but whether Sunday June 10th is in the same week as Monday June 11th or not depends on what is considered to be the first day of the week.

Upvotes: 6

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