Top 5 Free Object-Oriented Programming Courses for Java Programmers in 2024 [UPDATED]

The OOP or Object Oriented Programming paradigm allows you to write a program by modeling real-world things in terms of class and object. It makes representing a real-world thing in the programming world smoother and will enable you to manage the complexity of your program. Even though several programming paradigms, like procedural and functional, most of the code we write today is object-oriented. Some of the most popular programming languages are object-oriented, like Java, Python, PHP, and JavaScript, all supported object-oriented programming.

Most of us learned object-oriented programming while learning a programming language, like, learning Java or Python. Still, at that time, our focus primarily remains on programming language rather than genuinely understanding OOP concepts.

That's why many programmers end up knowing how to declare a class or instantiate an object rather than understanding the purpose of quality and objective and how to design one.

This is something you learn on the job, where you need to solve a real-world problem. For example, consider Udemy, one of the popular online courses platform.

If you think about how Udemy should store courses, search them, and recommend them to a user, and if you have to implement a similar solution, how would you do that? That's where you start thinking about the Course as a class and each Course an instance of that Course. That's where the definition that "A class is a blueprint for creating objects" starts making sense.

In short, it's essential to have a good understanding of OOP basics, OOP design principles, and OOP patterns to write a robust program to solve real-world problems. Knowledge of these tools and concepts will make you a better programmer and increase your ability to turn a solution or algorithm to code. It will also help you to solve complex problem and think in terms of class and objects. 

By the way, object oriented analysis and design is another topic which is quite important for interview to solve object oriented design questions. 

Once you learn the basics of OOP you should focus on learning object oriented analysis and design and if you afford, I highly recommend going through Grokking the Object-Oriented Design Interview course on Educative. It's a great interactive course to practice real world OOP design problems from interviews. 

6 Best Free Courses to Learn Object-Oriented Programming in 2024

In this article, I will share some of the free courses you can take to learn OOP basics or improve your object-oriented programming skills. This list contains Object-Oriented programming courses on Java and C# programming language from Udemy, Coursera, and Pluralsight.  You can join these free training courses to learn OOP basics online. 

1. Core Java Basics and Object-Oriented Programming  [FREE]

This is a free course to learn Object-Oriented Programming in Java from Udemy. The course will teach you how to structure your code using class and objects and how to do object-oriented programming by bundling attributes and methods within a category.

You also will learn about the four pillars that hold together object-oriented programming, which are:
  • Abstraction
  • Encapsulation
  • Polymorphism
  • Inheritance
  • Interfaces
  • Overloading and Overriding
  • Constructors etc.
At the end of this course, you will be able to write your own object-oriented programs in the Java programming language.

5 Free Object-Oriented Programming Online Courses for Programmers

2.  Master Object-Oriented Programming Concepts in Java [FREE]

This is a free course to learn object-oriented programming in Java from Udemy. It will introduce you to some of the essential OOP concepts in Java, including class, objects, inheritance, and Collections.

You will learn how to use these object-oriented programming concepts in code examples, discover how these concepts are used in real-world applications that require user input and understand the benefits of mastering these concepts in Java.

By the end of the course, you will create your own game (one of the best ways to improve your OOP skill), understand how and when to apply foundational Java concepts, and gain a deeper understanding of the tools and logic that professionalizes Java developers use every day.

free Java object oriented programming course

3. Object-Oriented Programming in Java [Coursera Free Course]

This is one of the best free courses to learn Object Oriented Programming using Java on Coursera. This course is offered by Duke University. It is part of multiple specializations on Coursera like Object Oriented Programming in Java Specialization and Object Oriented Java Programming: Data Structures and Beyond Specialization. This means completing this course will also count towards those certifications. 

In this course, you will learn how to use Object Oriented Programming by following a Data Visualization example; along the way, you will learn about critical object-oriented concepts like class, object, and their relationship.

You will also learn about Inheritance and how to model real-world scenarios into Objects which is really important for any application developer and Java programmer. The best part of this course is that you will get a chance to learn from Google Engineers, which makes an appearance in this course. 

As I said, the course is free-to-audit which means you can learn for free, but you need to pay if you also want certification, and then you need to complete the specialization mentioned above. If you are interested in Coursera Certifications, then I suggest you join Coursera Plus, a subscription program that provides unlimited certification and courses for a monthly fee. 

best free Coursera course to learn Object Oriented Programming in Java

4. Java OOP Basics [Free Udemy Courses to learn OOP]

This is another free course to learn Object Oriented basics from Udemy for Java Programmers. If you are a Java developer, you can use this free online course to learn object-oriented programming and fundamental Java concepts. 

This course will lay the foundations of Object-Oriented Programming (OOP) in your mind, allowing you to progress to more complex, systematic, and cleaner Programming methods.

The course is aimed at students who have at least some coding experience, preferably Java, but given OOP is language-neutral concepts, coding experience with any other similar language like Python, JavaScript, or C# is also acceptable).

Finally, you will build a basic banking application to practice your object-oriented programming skill.

5. SOLID Principles of Object-Oriented Design [Free Trial Pluralsight]

This is a great course to learn object-oriented design principles, which is also an essential part of learning Object-oriented programming.

This online OOP course introduces foundational principles of creating well-crafted code and is appropriate for anyone hoping to improve as a developer.

The SOLID principles are coined by Uncle Bob in his classic book Clean Code (must-read books for any Java program. If you haven't read it yet, then read it now), and they are fundamental to designing maintainable and robust OOP applications.

Whether you've only just begun writing software or have been doing so for years, these principles, when used appropriately, can improve the encapsulation and coupling of your application, making it more manageable and testable in the face of changing requirements.

By the way, you would need a Pluralsight membership to join this course which costs around $29 per month or $299 per year (14% discount). I highly recommend this subscription to all programmers as it provides instant access to more than 7000+ online courses to learn any tech skill. Alternatively, you can also use their 10-day-free-pass to watch this course for FREE.

free Pluralsight course to learn object oriented programming

6. Object-Oriented Programming (OOPs) for JAVA Interviews 

This is another free online course to learn Object Oriented Programming from Udemy, which teaches you OOP concepts for Java interviews. In this free Udemy course, Object-Oriented Programming (OOPs) for JAVA Certification, you review the basics of objects and classes covered in their previous studies.

The best part of this Course is that you will learn OOP by preparing for interviews which is an excellent method to learn as when you prepare for interviews, you are much more focused and research-oriented than at regular times. 

Here are the things you will learn in this course:
  • OOP Basics like class and objects
  • OOP Fundamentals like Abstraction, Encapsulation, Inheritance, and Polymorphism
  • Method Overloading and Overriding, Hiding
  • Abstract class and interface
  • Constructors 
  • Organizing object-oriented code
Overall a comprehensive 13-hour long course to learn vital object-oriented concepts and fundamentals from an interview point of view. 

best free Java Object Oriented Programming course

That's all about some of the free courses to learn object-oriented programming online. A good understanding of object-oriented programming basics, design principles, and design patterns is mandatory for today's programmers. Every beginner programmer should spend some time learning those in their choice of a programming language like Java or Python.

Other Free Online Courses You May like to explore

Thanks for reading this article so far. If you like these best free Object-Oriented Programming training courses, please share them with your friends and colleagues. If you have any questions or feedback, then please drop a note.

P. S. - If you are looking for an Object-Oriented Design Course instead of Object-Oriented Programming, I suggest you join Grokking the Object-Oriented Design Interview course on Educative. On this interactive coding platform, you learn by doing in the browser. 


  1. How do I start learning online

    1. You can start with reading blogs or watching online courses? best way is to start learning online is join a Udemy course like web developer bootcamp or Java Masterclass and if you need free resource then watch a YouTube course, particularly from freeCodeCamp YouTube channel.


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