Top 5 Object Oriented Programming and Design Courses in Java - Best of Lot

There is no doubt that Object-oriented programming is a pillar of software development and also one of the reasons for the massive success of Java. Good knowledge of Object-oriented programming helps you to create better software. It also helps you to communicate your ideas better with your team members and fellow programmers. Despite being such an important technology, it's difficult to find programmers who understand OOP well. Many programmers just think that OOP is nothing more than Abstraction, Inheritance, Encapsulation, and Polymorphism, without truly understanding these concepts and mastering them.

No doubt that they are the four pillars of Object-oriented programming, but OOP is much more than that. OOP is about thinking in terms of class and object, organizing your code following best practices like using SOLID design principles and design patterns to write code, which is easier to maintain and enhance.

It eventually helps you to write better software, which is easier to change and support, and that's why programmers and software developers need to understand OOP well.

In the past, I have shared a couple of books and free courses to learn object-oriented programming, which many of you liked a lot, but general feedback was about sharing more thorough and complete courses to learn both basic and advanced OOP concepts. I have taken your feedback, and this post is a result of that.

In this article, I am going to share some of the best courses which can help you to learn Object-oriented programming and design from scratch. I have also included both beginner and advanced courses in catering Java programmers of different levels of experience.

Top 5 Object-Oriented Programming Courses for Java developers

Without any further ado, here is my list of some of the best object-oriented and design courses for Java programmers. The list includes courses for both beginners as well as Java programmer with a couple of years of experience. No matter whether you know Java and OOP or not, you will learn a thing or two by joining these courses.

1.Master Object-Oriented Design in Java

It's easy to learn Java, but its equally difficult to write production-quality object-oriented code, and that's where this course will help you.

Most of the object-oriented courses you will find on the internet will just explain to you OOP basics like Abstraction, Encapsulation, etc. but doesn't go into detail about how to apply them into the real world.

What problem Abstraction solves? Why it's important? What happens if you don't use the right level of Abstraction or how do you develop the skill to see things at the different levels of Abstraction etc.

This course attempt to bridge that gap by explaining you all the essential tools and concept of Object-oriented programming a professional Java developer should know.

You will start with OOP basics like any other Java course, but slowly you will learn to design and develop software using best practices in Object-oriented programming.

You will learn about SOLID principles and see examples of using them to write better code. You will also learn about several object-oriented design patterns like Template, Factory, Strategy, Observer, Builder patterns, etc.

The course also covers advanced concepts like dependency injection, UML, and show you how to use them by real projects. Overall, an excellent course to learn Object-Oriented programming and design, and I highly recommend this to both junior and intermediate Java developers with a couple of years of experience.

2.Absolute Introduction to Object-Oriented Programming in Java

This is another course form the same author of the previous course. This course is actually a beginner level, and it's better if you take this before joining the previous course, if you don't have any prior background on OOP.

This course is slow-paced, simple, and perfect for beginners who want to understand what are class and object and how they help you write a more organized code.

You will learn about when an object is created and how it behaves with properties and methods and what happens when you run a Java program.

By the end of this course, you will understand the difference between a class and an object and important OOP techniques such as inheritance and polymorphism.

Overall a good course for beginners who wants to understand object-oriented programming.

3.Java - Object-Oriented Programming [For Absolute Beginners]

This is another course that focuses more on Java but covers Object-oriented programming well. You can divide the course into 2 parts, the first part is chapter 1, which is solely focused on OOP. And, the second part is all other chapters which focus on different features of Java, like Threads, IO, Streams, Java Garbage collection, and Exception handling.

In the first part, you will learn about OOP basics like class and objects, constructors, overloading and overriding methods, Data Abstraction, Encapsulation, and Inheritance, etc.

The good part is that it explains each concept with a demo, which makes it easy to digest and remember. The course also focuses on static variables, which OOP didn't recommend and use of abstract class and interface.

4.Object-Oriented Programming in Java: From the Beginning

Most of the courses you will find with Object-oriented programming in Java focus more on Java and less on OOP, but this course is different. It's a true Object-oriented programming course that concentrates just on OOP and tends to use Java, for example.

You will learn about the basics of Object-Oriented Programming e.g.what is the difference between OOP vs. Procedural languages like Java vs. C and things like Abstraction, Encapsulation, Inheritance, Polymorphism, Composition, and Aggregation.

You will also learn about the Abstract class interface and how objects are created using OOP.

The course now focuses on how Java supports OOP like getters and setters, access modifiers, use of interface, composition, overloading, static members, etc.

At last, the course also introduces some of the design patterns in Java and explains how they help you write better OOP code in Java.  In short, a good, short course to learn Object-oriented programming and design in Java. Good for both software engineers and working Java professionals.

5.Learn Object-Oriented Programming with Java in 250 Steps

This is an excellent and up-to-date course to learn Object-oriented programming in Java.

The course teaches you Object-oriented programming using Java 9 i.e., it uses the latest and greatest tools like JShell, Eclipse IDE and others. You will learn about the basics of programming like loops, conditionals, functions, etc.

The course also explains the basics of object-oriented programming e.g. abstract class, interface, constructors, overriding, overloading along with four pillars of OOP likeAbstraction, Encapsulation, Polymorphism, and Inheritance.

The best part of the course is that it's very hands-on and you will learn by doing, which is the best way to learn new technology.

Another great thing about the course is that it's currently FREE but I am not sure how long it will remain free, I am sure it will be turned to a paid course but you can grab it while it's FREE.

That's all about some of the best courses to learn Object-Oriented Programming and Design in Java. These courses are great for anyone starting with both Java and Object-oriented programming first time. It will not only teach you OOP basics like Abstraction, Encapsulation, Inheritance, and Polymorphism but also show you how to design a program using OOP. You will also get to learn about essential Object-oriented design principles such as Coding for Interface and SOLID principles for creating better Java applications.

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