The default Keyword in Interfaces in Java

Java 8 introduced the ability to define concrete methods in interfaces using the default keyword. These methods provide default implementations.

Source Code

interface MyInterface {
    default void newMethod() {
        System.out.println("New default method");
    }
    void existingMethod(String str);
}

Use default methods in interfaces when you need to add new functionality to interfaces without breaking the existing implementation of classes that use these interfaces.

By grasping these concepts, Java beginners can progressively build a solid foundation in programming, enabling them to tackle more complex problems and explore advanced features with confidence.