Classes, fields, methods, constructors, and objects are the building blocks of object-based Java applications. This Java tutorial teaches you how to declare classes, describe attributes via fields ...

Generalization, specialization and dependency define relationships between the objects in your application ...

What does object-oriented programming actually mean? Find out inside PCMag's comprehensive tech and computer-related encyclopedia.

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.

The sample scenarios (or programs, if you will), allow students to interact with a variety of objects, modify classes, and see the results of changing methods easily through the IDE.