Chapter 4

Question 1

What is generalization

Answer 1

A base class represents general behavior of different distinct classes.

Question 2

Does IS A relationship important in inheritance

Answer 2

Yes

Question 3

What is sub typing

Answer 3

Behavior compatibility of base and drive class is sub typing. The use of drive class in place of base class and behavior does not change.

Question 4

What is specialization

Answer 4

Specialization is reverse of sub typing. Specialization means that derived class is behaviorally incompatible with the base class. It means base class can not always be replaced by the derived class.

Question 5

What is over riding

Answer 5

The drive class has its own behavior that over ride default behavior of base class. Specialization is related to over riding.

Question 6

Can we instantiate abstract class

Answer 6

No

Question 7

What are concrete classes

Answer 7

Drived classes from abstract class that can be instantiate