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 ...

As you learned in my recent introduction to programming with classes and objects, you initialize an object via the code that you place in a class’s constructor. Consider Listing 7. Listing 7.

The Java object serialization example source code. The full code for this Java serialization tutorial is below. This is code uses a single public class and two non-public classes, all of which can be ...

“Object oriented” refers to the way that Java code is structured: in modular sections called “classes” that work together to deliver a cohesive experience.

In the example in Figure A, two objects have been defined and named Version1Connection and Version2Connection (see Listing A for sample code). Each concrete class implements the interface defined ...

Object-oriented systems are usually partitioned into layers of related responsibilities and only dependencies in one direction are allowed, from higher layers (more specific, less reusable) to lower ...

Java is a programming language developed by James Gosling at Sun Microsystems. The general-purpose, object-oriented language is designed to be written once; the code can be run on practically any ...