Interfaces in Java: The Invisible Contract That Powers Flexible Applications

1. 1Define an interface in Java using the 'interface' keyword to establish a contract
2. 2Implement the interface in a class using the 'implements' keyword to provide concrete functionality
3. 3Use interface references to invoke methods and access properties in a polymorphic way
4. 4Apply interfaces to design more flexible and extensible applications
5. 5Test and verify interface implementation using Java's built-in testing frameworks

Software engineers and developers benefit from understanding interfaces in Java to create more modular and maintainable code

💡 Interfaces in Java define a contract that must be implemented by any class that implements it, enabling polymorphism and loose coupling

🚀 Master Java interfaces to build flexible & modular apps!