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 ...

This post explains how to use classes in Java to build objects and organize your code. Also learn: constructors, static methods, and more!

Becoming popular in the early 1990s and the norm today, object-oriented programming (OOP) languages, such as C++ and Java, provide a formal set of rules for creating and managing objects.

Last time, in ”Transitioning into object-oriented programming using Java,” we learned that for a programming language to be truly object-oriented, it should support information hiding ...

Copying objects is a common Java programming operation that has one serious trap. Here's how to avoid copying from an object reference and only copy the instance and values you want.

The next stage is to understand object-oriented programming and classes. This understanding is what really gives Java and languages like it their power, but it can be a little tricky to wrap your ...

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.