How do I discover the Quarter of a given Date?

Question

Given a java.util.Date object how do I go about finding what Quarter it\'s in?

Assuming Q1 = Jan Feb Mar, Q2 = Apr, May, Jun, etc.

Answer 1

Since quarters are a localized (Western) concept, specify a Locale rather than using the platform default:

Calendar cal = Calendar.getInstance(Locale.US);
/* Consider whether you need to set the calendar's timezone. */
cal.setTime(date);
int month = cal.get(Calendar.MONTH); /* 0 through 11 */
int quarter = (month / 3) + 1;

This will avoid getting the thirteenth month (Calendar.UNDECIMBER) on non-Western calendars, and any skew caused by their shorter months.

Answer 2

I use this method.

 public static Integer getQuarter(Date d){
    Calendar c = Calendar.getInstance();
    c.setTime(d);
    int month = c.get(Calendar.MONTH);
    return (month /3)+1;
}

Answer 3

JFreeChart has a Quarter class. If you're curious, check out the javadoc. The source is also available from SourceForge if you want to check out the implementation.

Answer 4

You could use

int quarter = (myDate.getMonth() / 3) + 1;

Be warned, though that getMonth is deprecated:

As of JDK version 1.1, replaced by Calendar.get(Calendar.MONTH).

Answer 5

Make sure that the thisMonth is at least a float or a double, not an int:

String quarter = thisMonth/3 <= 1 ? "Q1" : thisMonth/3 <= 2 ? "Q2" : thisMonth/3 <= 3 ? "Q3" : "Q4";

Regards, MS

Answer 6

int month = Calendar.getInstance().get( Calendar.MONTH ) + 1;

int quarter = month % 3 == 0?  (month / 3): ( month / 3)+1;