Given: <pre><code class="java"> interface Animal {

Given:


interface Animal {
    void eat();
}
 
// Insert code here

public class HouseCat implements Feline {
    public void eat() { }
}

Which of the following lines will allow the code to compile successfully?

interface Feline extends Animal { }
interface Feline extends Animal { void eat(); }
interface Feline extends Animal { void eat() { } }
interface Feline extends Animal { default void eat() { } }

Explanation

Declaring the void eat() method in one or both of the interfaces doesn't affect anything. You can define method in an interface with a default keyword The HouseCat class that implements the Feline interface, is correctly implementing the declared method.