Getting int value for day of week from Calendar class 2

[ob1kanobee]

I have my Calendar date set for Wednesday, February 1, 2006.

I am trying to get the int value for the day of week for that date, which I assume should return 3 for a Wednesday.

Calendar myCal = Calendar.getInstance();
firstCal.set(Calendar.MONTH,2);
firstCal.set(Calendar.DAY_OF_MONTH,1);
firstCal.set(Calendar.YEAR,2006);

int firstDayOfWeek = firstCal.DAY_OF_WEEK;

It returns a 7. What am I doing wrong?

 

[Diancecht]

You're setting March, not February. Use the constans defined for each month instead of numbers to be sure you're correct.

http://java.sun.com/j2se/1.4.2/docs/api/java/util/Calendar.html#FEBRUARY

Cheers,
Dian

 

[ob1kanobee]

Thanks Dian.

 

[ob1kanobee]

I'm confused.
The value I'm getting back now for variable firstCal is correct for Wednesday, February 1, 2006, but the firstCal.DAY_OF_WEEK is still returning a 7?

 

[Diancecht]

Post your actual code.

Cheers,
Dian

 

[ob1kanobee]

Here's an easy example that will result in day of week is 7:
Date thisDate = new Date("1-Feb-2006 10:35:00 PM");
Calendar firstCal = Calendar.getInstance();
firstCal.setTime(thisDate);
System.out.println("Date = " + firstCal.getTime());
int firstday = firstCal.DAY_OF_WEEK; // The first day (0-6) of the target month.


What I am really trying to do is take the code below which is a floating holiday method and replace everywhere I am using the Date function calls with the Calendar class.

Arguments are: current year, month number, week number, day number, event name
This should return me the day of the month, which works correctly using the Date method as shown below.

        Long dayofmonth = floatingHoliday(new Long(2006),new Long(1),new Long(3),new Long(2),"Martin Luther King's Birthday");

    public Long floatingHoliday(Long eventYear,Long eventMonth,Long weekNumber,Long dayOfWeek,String eventName) throws Exception {
        // Floating holidays/events of the events.js file uses:
        //      the Month field for the Month (here it becomes the targetmo field)
        //      the Day field as the Cardinal Occurrence  (here it becomes the cardinaloccurrence field)
        //              1=1st, 2=2nd, 3=3rd, 4=4th, 5=5th, 6=6th occurrence of the day listed next
        //      the Year field as the Day of the week the event/holiday falls on  (here it becomes the targetday field)
        //              1=Sunday, 2=Monday, 3=Tuesday, 4=Wednesday, 5=Thurday, 6=Friday, 7=Saturday
        //      example: "F",   "1",    "3",    "2", = Floating holiday in January on the 3rd Monday of that month.
        //
        // In our code below:
        //      targetyr is the active year
        //      targetmo is the active month (1-12)
        //      cardinaloccurrence is the xth occurrence of the targetday (1-6)
        //      targetday is the day of the week the floating holiday is on
        //              0=Sun; 1=Mon; 2=Tue; 3=Wed; 4=Thu; 5=Fri; 6=Sat
        //              Note: subtract 1 from the targetday field if the info comes from the events.js file
        //
        // Note:
        //      If Memorial Day falls on the 22nd, 23rd, or 24th, then we add 7 to the dayofmonth to the result.
        //
        // Example: targetyr = 2052; targetmo = 5; cardinaloccurrence = 4; targetday = 1
        //      This is the same as saying our floating holiday in the year 2052, is during May, on the 4th Monday
        //
        Long dayofmonth = new Long(0);     // zero out our TransitExceptions day variable.
        Long dayOffset = new Long(0);
        if(eventName.startsWith("Memorial") && eventMonth.equals(new Long("5")))
        { // Get last Monday of the month
            Long lastdayInMay = new Long("31");
            Date lastdate = new Date(eventMonth.toString()+"/"+ lastdayInMay.toString() +"/"+eventYear.toString());      // Object Storing the first day of the current month.
            int lastday = lastdate.getDay() + 1; // The first day (1-7 = Sun-Sat) of the target month.
            if(lastday == 2) // lastday is a Monday, leave as is...
            {
                dayofmonth = lastdayInMay;
            } else if(lastday == 1) { // lastday is a Sunday...
                dayofmonth = new Long(Math.round(lastdayInMay.longValue() - new Long("5").longValue()));
            } else if(lastday > 2) { // lastday is a Tue-Sat...
                dayOffset = new Long(Math.round(lastday - 2));
                dayofmonth = new Long(Math.round(lastdayInMay.longValue() - dayOffset.longValue()));
            }
        } else {
            Date firstdate = new Date(eventMonth.toString()+"/1/"+eventYear.toString());      // Object Storing the first day of the current month.
            int firstday = firstdate.getDay() + 1; // The first day (1-7) of the target month.

            if(dayOfWeek.intValue() >= firstday)
            {
                weekNumber = new Long(weekNumber.longValue() - 1);
            }
            dayofmonth = new Long(Math.round(Math.round(Math.round(dayOfWeek.intValue() - firstday)+1)+Math.round(weekNumber.longValue()*7)));
        }
        return dayofmonth;
    }

 

[feherke]

Hi

[s]int firstday = firstCal.DAY_OF_WEEK;[/s]

int firstday = firstCal.get(Calendar.DAY_OF_WEEK);

Feherke.

http://rootshell.be/~feherke/

 

[ob1kanobee]

Thanks again Feherke.