Here's how to make classes, fields, methods, constructors, and objects work together in your Java programs.

Here's everything you need to know about initializing Java classes and objects before executing them in the JVM.

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

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 ...

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 ...

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.