In this paper, implementation issues of object-oriented programming using A
da 95 are addressed. Within the proposed object-oriented programming style
object classes are defined in a general uniform, well-structured manner. Th
e paper investigates mainly the implementation of sequential and concurrent
object classes in Ada 95 and offers a uniform template of the structure of
object classes. Object classes tailored with regard to the template given
allow the derivation of new sequential as well as concurrent object subclas
ses with polymorphic methods from base object classes.