Discover the Power of Object-Oriented Programming (OOP): Polymorphism and Interfaces

Object-Oriented Programming (OOP) is a fundamental concept in computer science that enables developers to create robust, scalable, and maintainable code. In this article, we'll explore two key concepts: polymorphism and interfaces.

Polymorphism refers to the ability of an object or method to take on multiple forms. This allows for more flexibility and adaptability in programming, as a single piece of code can be applied to different scenarios. In the example provided, a program can accept any subclass of Card (such as DebitCard or CreditCard) and still execute the same methods (e.g., withdraw and deposit). The behavior changes dynamically based on the type of object invoking the method.

Interfaces, on the other hand, define a contract that must be implemented by any class that adheres to it. This ensures consistency and reusability of code, as each implementing class provides its own implementation of the interface's methods. In the example, the Notificacao interface defines a method for sending messages, which is then implemented by two classes (NotificacaoSMS and NotificacaoEmail). Both classes must provide their own logic for sending notifications.

By understanding these fundamental concepts in OOP, developers can create more efficient and scalable code that is easier to maintain and extend. Whether you're working on a small project or building a large-scale application, mastering polymorphism and interfaces will help you achieve your goals.

Source: https://dev.to/felipe_bs07/programacao-orientada-a-objetos-java-1kfa