​

interface Cat extends Animal {

    public abstract void cry();

}

​

interface Dog extends Animal {

    public abstract void cry();

}

​

class MyPet implements Cat, Dog {

    public void cry() {

        System.out.println("멍멍! 냐옹냐옹!");

    }

}

​

public class prog {

    public static void main(String[] args) {

        MyPet p = new MyPet();

        p.cry();

    }

}