Interfaces

Lab Java Intermediate 20 points

Create an interface Greeter with String greet(String name), and implementations English (Hello, NAME), Spanish (Hola, NAME) and Pirate (Ahoy, NAME!). Read a language and names and greet each.

Input

Line 1: en, es or pirate. Line 2: n. Then n names.

Output

n greetings.

Example

Input

pirate
2
Jack
Anne

Output

Ahoy, Jack!
Ahoy, Anne!

Sample input available Sample output available

Editor

Java

Hints

A class implements an interface by providing all its methods.

Interface methods are public, so implementations must be public.

Solution explanation

Code written against an interface works with any implementation - choose one at runtime.

Show solution

import java.util.Scanner;

interface Greeter {
    String greet(String name);
}

class English implements Greeter {
    public String greet(String name) {
        return "Hello, " + name;
    }
}

class Spanish implements Greeter {
    public String greet(String name) {
        return "Hola, " + name;
    }
}

class Pirate implements Greeter {
    public String greet(String name) {
        return "Ahoy, " + name + "!";
    }
}

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String lang = sc.next();
        Greeter g = lang.equals("es") ? new Spanish() : lang.equals("pirate") ? new Pirate() : new English();
        int n = sc.nextInt();
        for (int i = 0; i < n; i++) {
            System.out.println(g.greet(sc.next()));
        }
    }
}

Output

Answer