Using Abstract Classes in Java – When and Why You Should Choose Them
Understand Java abstract classes with real-world examples. Learn when to use them, how they differ from interfaces, and their role in OOP design.
All Tutorials
Final Class, Final Method, Final Variable – OOP Implications in Java
Understand the role of `final` keyword in Java OOP—learn how final classes, methods, and variables impact design, inheritance, and flexibility
Access Modifiers in Java OOP – public, private, protected, default Explained
Learn Java access modifiers – public, private, protected, and default – with syntax, examples, use cases, and OOP principles. Perfect for beginners and pros.
IS-A vs HAS-A Relationship in Java – Inheritance vs Composition Explained with Code
Understand the IS-A vs HAS-A relationship in Java. Learn when to use inheritance or composition, with syntax, real-world examples, UML, and best practices.
this Keyword in Java – How and When to Use It in Object-Oriented Programming
Understand the ‘this’ keyword in Java. Learn how it works, when to use it, common pitfalls, and real-world OOP examples with code and best practices.
Static vs Non-Static in Java – Differences, Syntax, and Real-World Examples Explained
Learn the difference between static and non-static in Java. Covers syntax, use cases, pros/cons, real-world examples, edge cases, and best practices
Getters and Setters in Java – Why They Matter and When to Use Them with Examples
Learn what getters and setters are in Java, how they help with encapsulation, when to use them, and how they work with modern Java features like records
Java Constructor Explained – Default, Parameterized, and Copy Constructors with Examples
Learn Java constructors in depth. Understand default, parameterized, and copy constructors with syntax, examples, use cases, and Java 17+ updates
OOP vs Procedural Programming in Java – Key Differences, Use Cases, and Examples Explained
Learn the core differences between OOP and procedural programming in Java. Covers concepts, syntax, pros, cons, and real-world use cases with examples
Polymorphism in Java – Understanding Method Overloading vs Overriding with Examples
Learn polymorphism in Java with in-depth coverage of method overloading and overriding, real-world examples, best practices, and Java 17+ features.