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

This post explains how to call a method in Java. Learn how to define methods, call them from other classes, and pass arguments!

Classes and objects in Java must be initialized before they are used. You’ve previously learned that class fields are initialized to default values when classes are loaded, and that objects are ...

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.

Within Java, dynamic-loading is typically achieved by calling the forName method on the class java.lang.Class; however, when Class.forName is called from within an Extension, strange errors can occur.