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package javatest.e0501;
import java.util.Scanner;
interface Soundable {
void makeSound();
void turnUpVolumn();
void turnDownVolumn();
}
class Radio implements Soundable {
private int volumn = 5;
@Override
public void makeSound() {
System.out.println("Radio sound...");
}
@Override
public void turnUpVolumn() {
volumn++;
}
@Override
public void turnDownVolumn() {
volumn--;
}
}
class Walkman implements Soundable {
private int volumn = 5;
@Override
public void makeSound() {
System.out.println("Walkman sound...");
}
@Override
public void turnUpVolumn() {
volumn++;
}
@Override
public void turnDownVolumn() {
volumn--;
}
}
class Mobilephone implements Soundable {
private int volumn = 5;
@Override
public void makeSound() {
System.out.println("Mobilephone sound...");
}
@Override
public void turnUpVolumn() {
volumn++;
}
@Override
public void turnDownVolumn() {
volumn--;
}
}
public class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
String t = scanner.next();
Soundable soundable = null;
switch (t) {
case "radio":
soundable = new Radio();
break;
case "walkman":
soundable = new Walkman();
break;
case "mobilephone":
soundable = new Mobilephone();
break;
default:
System.out.println("Unknown device.");
System.exit(1);
}
soundable.makeSound();
}
}
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