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

Examples of using nested classes in your Java programs; ... Java’s standard class library is a runtime library of class files, which store compiled classes and other reference types.

Abstract classes and interfaces in Java serve fundamentally different purposes. Learn the differences between these Java language elements and how to use them in your programs.

Sealed classes make Java an even more powerful and expressive language and set the stage for even more sophisticated techniques such as pattern matching, which we'll explore in a subsequent article. A ...

Inside of a main method or any other piece of Java code, the SimpleConsumerExample class can be instatiated according to traditional Java syntax rules: /* Java Consumer example using a class */ ...