persianCalendar updatea few days ago Dr. Ghasem Kiani updated his persianCalendar class to be "more" icu4j like. i wrapped it up in CFC and added it to the i18nCalendars package (which now contains 7, count 'em, 7 calendars). you can see it on it's own in a simple testbed here. you can download the persian calendar class from Dr. Ghasem's sourceforge project.
note that this version of the persian calendar uses a "well-known arithmetic algorithm for calculating the leap years" rather than astronomical calculations.
i'd like to publicly thank Dr. Ghasem Kiani for his work on this project, we've been waiting quite a while for a persian calendar to round off our i18n calendars. thanks.