Module 2.1: Object Relationship | Inheritance

Encapsulation
Inheritance
Polymorphism
Abstraction

The four pillar of OOP

Encapsulation

Bundling data and behavior together and controlling access to them. Data protection and controlled access.

Inheritance

An Object-Oriented Programming mechanism where one class acquires the attributes and methods of another class.

Polymorphism

One interface, many implementations or behaviors.

Abstraction

Hiding complexity behind a simple, focused interface.

Superclass
Parent Class

The existing class whose attributes and methods are inherited by another class.

Subclass
Child Class

extends Keyword

A Java keyword used to declare that one class inherits from another class.

super Keyword

A Java keyword that refers to the superclass portion of the current object.

private Access Modifier

An access modifier restricting access to a member within its declaring class.

protected Access Modifier

An access modifier that permits access within the same package and from subclasses under Java's protected-access rules.

public Access Modifier

An access modifier that permits a member to be accessed from other classes wherever its enclosing class is accessible.