Calculate business days difference between two days excluding holidays?

I already have a list of holidays which is a List .

Given two Date object, how could I calcul开发者_开发技巧ate the difference in working days (not counting weekends and holidays) between them?

I have found the library ObjectLab Kit but I think it only knows how to advance days.

Thanks

I found Jollyday useful in earlier projects.

Probably not the most efficient way, but probably fast enough: loop starting with the earliest date, add a day at each iteration until the end date, and increment a counter unless the current day is a weekend or a holiday.

java.util.Calendar is the class to use. It has method to add a day to itself and check if it's a saturday or a sunday.