Explore the fundamentals of OOP in Java. Gain insights into inheritance, polymorphism, and more to write clean, modular, reusable code through interactive exercises and practical challenges.

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Object-oriented programming (OOP) has been around for decades. As the original object-oriented language, Java is a mainstay in the world of computer programming. 

Having a foundation in OOP Java concepts will allow you to write cleaner, more modular, and more reusable code, as well as make it easier for you to understand the codebases of different companies you might be interested in joining.

Starting with the basics and reviewing complex topics like inheritance and polymorphism, this course is filled with illustrations, exercises, quizzes, and hands-on challenges. You’ll walk away with an understanding of classes and objects behavior and be able to easily create simple, efficient, reusable and secure code.

Learn Object-Oriented Programming in Java

# Definition

Encapsulation is a fundamental programming technique in OOP used to achieve data hiding.

> **Encapsulation** in OOP refers to binding the **data** and the **methods to manipulate that data** together in a single **unit** (class). 

Depending upon this **unit**, objects are created. Encapsulation is normally done to hide the state and representation of an object from outside. A class can be thought of as a **capsule** having *methods* and *data members* inside it.

In this lesson, you'll get familiar with the component of data hiding i.e. Encapsulation.

Introduction to Object-Oriented Programming

Classes and Objects

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Data Hiding

Composition, Aggregation and Association

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Object Oriented Programming in Java - Exam I

Inheritance

Polymorphism

Abstract Classes and Interfaces

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Object Oriented Programming in Java - Exam II

Encapsulation