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 ...

It's not good enough to simply write code that works. That code must be easily maintained, enhanced and debugged when problems happen. One of the reasons why object-oriented programming is so popular ...

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 ...

I'm a big fan of domain driven design. One of the key concepts of that approach are what are called value objects: objects that are considered identical because they have the same values in their ...