Question

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?

Cosmo · Accepted Answer

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.

Cosmo · Accepted Answer

interface Feline extends Animal { }

Cosmo · Accepted Answer

interface Feline extends Animal { void eat(); }

Cosmo · Accepted Answer

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

Cosmo · Answer

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

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