Here's what you need to know about object-oriented programming with classes, methods, objects, and interfaces, with examples in Java, Python, and TypeScript. Object-oriented programming (OOP) is ...

Extensible applications allow you to add functionality without rewriting your application: you dynamically select the classes that make up your application at runtime rather than design time. I once ...

Learn how to use Java annotations to associate metadata with classes, methods, and other application elements in your Java programs. There are times when you need to associate metadata, or data that ...