Abstract classes and interfaces in Java serve fundamentally different purposes. Learn the differences between these Java language elements and how to use them in your programs.

Java supports class reuse through inheritance and composition. This two-part tutorial teaches you how to use inheritance in your Java programs. What you’ll learn in this Java tutorial The first ...

The Java serialization tutorial In this Java serialization example, we will use both the ObjectOutputStream and the ObjectInputStream to save and retrieve the state of a simple JavaBean. The POJO will ...

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.

This is an in-depth java tutorial for beginners. Learn what Java is, how to get started, and how to build basic apps using key concepts!

Learn about serialization in Java with our comprehensive tutorial. We provide examples to help you understand how serialization works.