Limitations and Alternatives
Using inheritance extensively in designing a program imposes certain constraints.
For example, consider a class Person that contains a person's name, address, phone number, age, gender, and race. We can define a subclass of Person called Student that contains the person's grade point average and classes taken, and another subclass of Person called Employee that contains the person's job-title, employer, and salary.
In defining this inheritance hierarchy we have already defined certain restrictions, not all of which are desirable.
Read more about this topic: Inheritance (object-oriented Programming)
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