/ Example: Interfaces
// Module: speaker
// Source code file: Dog.java
// Create classes that implement the Speaker interface.

public class Dog extends Pet implements Speaker {

    public Dog(String theName) {
        super(theName);
    }

    @Override
    public String toString( ) {
        return "Dog; " + super.toString( );
    }

    @Override
    public void speak() {
        System.out.println("Woof");
    }
}