Explore Object-Oriented Programming (OOP) concepts in Java with this repository. Includes code examples, conceptual questions, and explanations of key OOP principles like inheritance, polymorphism, ...

Learn the four types of polymorphism in Java, then start using subtype polymorphism to execute different forms of the same Java method.

Get started with polymorphism in Java and how to do method invocation in polymorphic method calls.

Sealed classes in Java let developers limit the creation and use of subclasses and preserve the class hierarchy. Here is how sealed classes in Java work.