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Why stack is an abstract data type

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Reference no: EM133216694

1. Explain why a stack is an ADT (an abstract data type)?

2. If a base class has a private field, the derived class inherits it, but does not have direct access to it. It must access it via the getter and setter methods like every other class. Explain the benefit of such a design. Why not just allow the derived class to have direct access to its own field?

3. Explain with an example how polymorphism works with an interface (not base and derived classes).

4. What does the "is-a" relationship mean when inheritance is involved. The answer the derived class is a base class is not sufficient. What does that really mean in terms of code development?

Reference no: EM133216694

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