Challenge: Animal Sounds

Lab Java Beginner 10 points

Write a class Animal with a method String sound() that returns ..., and child classes Dog (Woof), Cat (Meow) and Cow (Moo) that override it.

Read n and then n animal names. For each, create the right object (any other name gives a plain Animal) and print <name>: <sound>.

Input

First n, then n words.

Output

One line per animal, e.g. dog: Woof.

Example

Input

3
dog
cat
cow

Output

dog: Woof
cat: Meow
cow: Moo

Sample input available Sample output available

Editor

Java

Hints

Store every object in a variable of type Animal.

Calling a.sound() runs the version of the real object.

Solution explanation

The variable has the parent type, but Java calls each child's overridden sound() – that's polymorphism.

Show solution

import java.util.Scanner;

class Animal {
    String sound() { return "..."; }
}

class Dog extends Animal {
    @Override
    String sound() { return "Woof"; }
}

class Cat extends Animal {
    @Override
    String sound() { return "Meow"; }
}

class Cow extends Animal {
    @Override
    String sound() { return "Moo"; }
}

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        for (int i = 0; i < n; i++) {
            String name = sc.next();
            Animal a;
            if (name.equals("dog")) a = new Dog();
            else if (name.equals("cat")) a = new Cat();
            else if (name.equals("cow")) a = new Cow();
            else a = new Animal();
            System.out.println(name + ": " + a.sound());
        }
    }
}

Output

Answer