OOP Concepts

Question 1

What are the 4 concepts

Answer 1

Abstraction, Encapsulation, Polymorphism, Inheritance.

Question 2

Goals of OOP

Answer 2

Robustness, Reusability, Adaptability, Modularity

Question 3

Abstraction

Answer 3

Using simple things to represent complexity.
ie Hide complexity using simple “black boxes”.

Things like objects, classes, and variables represent more complex underlying code and data.

Question 4

Encapsulation

Answer 4

Keep fields within a class private, then providing access to them via public methods.

Question 5

Inheritance

Answer 5

Create new classes that share some of the attributes of existing classes.

Question 6

Why Abstraction

Answer 6

Hide unnecessary details and complexity from users.

Question 7

Why Encapsulation

Answer 7

We can re-use objects like code components or variables without allowing open access to the data system-wide.

Question 8

Why Inheritance

Answer 8

Allows us to build on previous work without reinventing the wheel.

Question 9

Polymorphism

Answer 9

Allows programmers to use the same word to mean different things in different contexts.