One of the features that make Java so powerful, is its object-oriented structure. This means that Java uses classes and objects to create more scalable, modular, and organized code.

It is easy to generate Java classes using the xjc binding compiler provided with the Oracle’s JDK 7 implementation. This is shown in the next screen snapshot.

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 ...

Class – Everything in Java is associated with classes and objects. Being a user-defined blueprint, a class in simple terms represents the data structure which is used again and again.

Reference objects aren't just useful when memory is at a premium; they can also be used to provide slick caching abilities to any application.