Classes & Objects

Question 1

What is a basic definition of a class (what is it used for)?

Answer 1

Basically, it is used to represent entites.

Question 2

What does a member function do?

Answer 2

Used to add additional functionality to a class.
(Ex. Output values of a variable)

Question 3

What does the “this” keyword do?

Answer 3

Very important keyword that is used to point to the current object.

Question 4

What do class modifiers do?

Answer 4

Can be used to define the visibility or accessibility of the properties of a class or methods.

Question 5

List and define the 3 main class modifiers.

Answer 5

Private - Properties/methods are only available to the class itself.
Protected - Properties/methods are only available to the class itself and subclasses derived from the class.
Public - Properties/methods are available to all classes.

Question 6

What is a constructor?

Answer 6

Constructors are special methods in a class that are called when an object of the class is created. (A constructor has the name of the class).

Question 7

What does the “static” keyword do?

Answer 7

This is used when assigning something and is used to define values that remain the same across all objects of a class.
(Ex. public static int Counter).