Understanding Interfaces in Java
Welcome to the Java Interface Learning Project 👨💻☕. This repository provides a hands-on introduction to interfaces in Java, covering the fundamentals, benefits, and real-world use cases with practical examples.
📌 What’s Inside? 🔹 What is an Interface?
An interface in Java is like a contract — it defines what methods a class must implement, but leaves the how up to the class itself.
🔹 Why Use Interfaces?
Interfaces help developers:
✅ Promote loose coupling – depend on abstractions, not concrete implementations.
✅ Ensure consistency – guarantee that classes share the same set of methods.
✅ Enhance flexibility & testability – swap implementations easily without changing dependent code.
🔹 Key Benefits and Use Cases
Interfaces are widely used in real-world software for designing scalable, maintainable, and reusable systems.
🐾 Real-World Application Examples
This project includes three practical examples:
Animal Interface Example 🐶🐦
Demonstrates polymorphism by defining a common behavior (makeSound, move) across different animals.
Logger Interface Example 📝
Implements logging using ConsoleLogger and FileLogger, showing how multiple classes can share a standard logging contract.
Event Handling Interface Example 🎯
Simulates button click events using an OnClickListener interface, similar to real-world UI frameworks.