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, ...

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 ...

When working in applications you might often find that the source code has become so complex that it is difficult to understand and maintain. Fluent interfaces and method chaining are two concepts ...