This exercise tests your understanding of interfaces through a geometric shape calculator system. The goal is to create a flexible system that can calculate different properties of various shapes ...

In this Java 101 tutorial, I’ve explained how interfaces differ from classes, and showed you how to declare, implement, and extend interfaces in your Java programs.

Why does Java's standard class library contain empty interfaces like Cloneable and Serializable? Find out why in this sixth installment in the "Object-oriented language basics" series. You'll also ...

Shape Interface: Defines methods for calculating properties of shapes; Shape Implementations: Various concrete shapes (Circle, Rectangle, Triangle) Shape Processor: A class that works with any shape; ...