Intro To Object Oriented Modelling

Question 1

In OOP, the analysis step in based on what?

Answer 1

Identifying and describing classes

Question 2

What’s the analysis model?

Answer 2

It is what you get when you engage in the phase object oriented analysis. It’s used to define what the system should do ie identify possible candidates for classes.

Question 3

What is data abstraction?

Answer 3

It’s the process of hiding certain details and showing only essential information to the user.

Question 4

How can data abstraction be achieved?

Answer 4

Generally, it’s done by either using abstract classes or interfaces.

Question 5

What’s an abstract class?

Answer 5

It’s a restricted class that cannot be used to create objects.

Question 6

Is it possible to access an abstract class?

Answer 6

Yes. To do so, the abstract class must be inherited from another class.

Question 7

What’s an abstract method?

Answer 7

It’s a method in an abstract class. It doesn’t have a body. The body is provided by the subclass or is inherited from the subclass