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 ...

What are classes in Java? If you’re not familiar with the concept of object-oriented programming, this is the best place to start. If you already know what a class is and just want to learn Java ...

An abstract class is a template definition of methods and variables in a specific class, or category of objects. In programming, objects are units of code, and each object is made into a generic class ...