A template or blueprint from which objects can be instantiated from.

An instance of a class.

The child class which inherits the methods and attributes from its parent class.

When a sub-class inherits the methods and properties of a parent class.

Also called parent class or base class.

A variable defined within a class to store a value.

A subroutine defined within a class to implement a behaviour.

Object-Oriented Programming

A method of a class that is automatically called when an object is instantiated from this class.

When a class has two or more parent classes.