What is the purpose of a method with a default implementation in an interface?.

The default method implementation in an interface allows defining the method body directly within the interface. This is useful for:

• Adding new methods to an interface without breaking existing implementations.
• Providing a base implementation that can be overridden in classes.

Example:

public interface MyInterface {
    default void defaultMethod() {
        System.out.println("Default implementation");
    }
}

public class MyClass implements MyInterface {
    // Can use the default implementation or override it
}

Thus, default methods increase the flexibility of interfaces and facilitate API evolution.