check whether this event occurs at least once between the two dates given . concode_field_sep Calendar calendar concode_elem_sep int dayOfWeek concode_elem_sep int month concode_elem_sep int dayOfMonth concode_elem_sep GregorianCalendar gCalendar concode_field_sep Date firstAfter concode_elem_sep Date firstBetween concode_elem_sep boolean isOn concode_elem_sep Date computeInYear concode_elem_sep Date doFirstBetween
boolean function ( Date arg0 , Date arg1 ) { return firstBetween ( arg0 , arg1 ) != null ; }