Faculty inherits from Employee who is a CommunityMember.

Student and Alumnus is each an indirect superclass of Faculty, Staff, Administrator and Teacher.

Staff is an indirect superclass of Administrator and Teacher.

Employee is a direct superclass of Faculty and Staff.

Teacher extends Faculty which inherits from Employee who is a CommunityMember.

Staff inherits directly from Student which extends CommunityMember.

Faculty inherits from Employee who is a CommunityMember.

Student and Alumnus is each an indirect superclass of Faculty, Staff, Administrator and Teacher.

Staff is an indirect superclass of Administrator and Teacher.

Employee is a direct superclass of Faculty and Staff.

Teacher extends Faculty which inherits from Employee who is a CommunityMember.

Staff inherits directly from Student which extends CommunityMember.

Faculty inherits from Employee who is a CommunityMember.

Student and Alumnus is each an indirect superclass of Faculty, Staff, Administrator and Teacher.

Staff is an indirect superclass of Administrator and Teacher.

Employee is a direct superclass of Faculty and Staff.

Teacher extends Faculty which inherits from Employee who is a CommunityMember.

Staff inherits directly from Student which extends CommunityMember.

A Cube is a ThreeDimensionalShape and is a Shape.

Triangle inherits from TwoDimensionalShape which extends Shape.

Several is-a relationships follow the arrows from the bottom of the diagram to the topmost superclass in this class hierarchy.

Tetrahedron extends ThreeDimensionalShape which inherits from Shape.

A Shape inherits from TwoDimensionalShape and ThreeDimensionalShape.

A Circle is a TwoDimensionalShape and is a Shape.

Usually commonality will be expressed in the members of the superclass.

Even when a superclass method is appropriate for a subclass, that subclass often needs a customized version of the method.

Objects of all classes that extend a common superclass can be treated as objects of that superclass.

The subclass can redefine the superclass method with an appropriate implementation.

A subclass is not allowed to inherit methods that it does not need or should not have.

A Cube is a ThreeDimensionalShape and is a Shape.

Triangle inherits from TwoDimensionalShape which extends Shape.

Several is-a relationships follow the arrows from the bottom of the diagram to the topmost superclass in this class hierarchy.

Tetrahedron extends ThreeDimensionalShape which inherits from Shape.

A Shape inherits from TwoDimensionalShape and ThreeDimensionalShape.

A Circle is a TwoDimensionalShape and is a Shape.

A Cube is a ThreeDimensionalShape and is a Shape.

Triangle inherits from TwoDimensionalShape which extends Shape.

Several is-a relationships follow the arrows from the bottom of the diagram to the topmost superclass in this class hierarchy.

Tetrahedron extends ThreeDimensionalShape which inherits from Shape.

A Shape inherits from TwoDimensionalShape and ThreeDimensionalShape.

A Circle is a TwoDimensionalShape and is a Shape.

Faculty inherits from Employee who is a CommunityMember.

Student and Alumnus is each an indirect superclass of Faculty, Staff, Administrator and Teacher.

Staff is an indirect superclass of Administrator and Teacher.

Employee is a direct superclass of Faculty and Staff.

Teacher extends Faculty which inherits from Employee who is a CommunityMember.

Staff inherits directly from Student which extends CommunityMember.

Faculty inherits from Employee who is a CommunityMember.

Student and Alumnus is each an indirect superclass of Faculty, Staff, Administrator and Teacher.

Staff is an indirect superclass of Administrator and Teacher.

Employee is a direct superclass of Faculty and Staff.

Teacher extends Faculty which inherits from Employee who is a CommunityMember.

Staff inherits directly from Student which extends CommunityMember.