OOP

Question 1

Abstraction

Answer 1

Abstraction is the process of hiding the implementation details from the user. Only the functionality will be provided to the user.

Question 2

How is abstraction achieved

Answer 2

Using abstract classes and interfaces

Question 3

Encapsulation

Answer 3

wrapping variables and methods in one single unit with the sole purpose of data hiding from external classes because you want to keep the variables hidden.

Question 4

how is encapsulation achieved

Answer 4

Declare variables of a class as private.
Provide public setter and getter to modify and view the variables.

Question 5

Inheritance

Answer 5

Allows classes to be derived from other classes

Question 6

Polymorphism

Answer 6

Allows subclasses of a class to define their own unique behaviours and yet share some of the same functionality.