/** * Obtains an instance of {@code HijrahDate} from the era, year-of-era * month-of-year and day-of-month. * * @param era the era to represent, not null * @param yearOfEra the year-of-era to represent, from 1 to 9999 * @param monthOfYear the month-of-year to represent, from 1 to 12 * @param dayOfMonth the day-of-month to represent, from 1 to 31 * @return the Hijrah date, never null * @throws IllegalCalendarFieldValueException if the value of any field is out of range * @throws InvalidCalendarFieldException if the day-of-month is invalid for the month-year */ static HijrahDate of(HijrahEra era, int yearOfEra, int monthOfYear, int dayOfMonth) { Jdk8Methods.requireNonNull(era, "era"); checkValidYearOfEra(yearOfEra); checkValidMonth(monthOfYear); checkValidDayOfMonth(dayOfMonth); long gregorianDays = getGregorianEpochDay(era.prolepticYear(yearOfEra), monthOfYear, dayOfMonth); return new HijrahDate(gregorianDays); }