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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.