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.

cpp17.tar.gz

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

# Method Overloading & Method Overriding

Method overloading and overriding are two completely different concepts.


Let's compare the differences below:

| **Method Overloading** | **Method Overriding** |
| --- | --- |
| Overloading happens at **compile time.** |  Overriding happens at **runtime** |
| Gives better performance because the binding is being done at compile time.  | Gives less performance because the binding is being done at run time. |
| **Private** and **final** methods can be overloaded.  | **Private** and **final** methods can not be overridden. |
| Return type of method does not matter in case of method overloading. | Return type of method must be the same in the case of overriding. |
| Arguments must be different in the case of overloading. | Arguments must be the same in the case of overriding.  |
| It is being done in the same class. | Base and derived classes are required here. |
| Mostly used to increase the readability of the code. | Mostly used to provide the implementation of the method that is already provided by its base class. |

In this lesson, you will get familiar with the differences between method overloading and method overriding.

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

Difference Between the Overloading and Overriding of Methods

Method Overloading & Method Overriding