Number as Words

/* Write a program that converts a number in the range [0…999] to words,
 * corresponding to the English pronunciation. */

import java.util.Scanner;

public class NumberAsWords {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Scanner scan = new Scanner(System.in);
        System.out.print("Enter a whole number in the range [0 .. 999]: ");
        int number = scan.nextInt();
        scan.close();

        if (number > 0 && number < 1000) {
            if (number > 99) {
                int hundred = number / 100;
                switch (hundred) {
                case 1:
                    System.out.print("One ");
                    break;
                case 2:
                    System.out.print("Two ");
                    break;
                case 3:
                    System.out.print("Three ");
                    break;
                case 4:
                    System.out.print("Four ");
                    break;
                case 5:
                    System.out.print("Five ");
                    break;
                case 6:
                    System.out.print("Six ");
                    break;
                case 7:
                    System.out.print("Seven ");
                    break;
                case 8:
                    System.out.print("Eight ");
                    break;
                case 9:
                    System.out.print("Nine ");
                    break;

                default:
                    break;
                }

                System.out.print("hundred");

                number %= 100;
                if (number > 0) {
                    System.out.print(" and ");
                }
            }

            if (number >= 20) {
                int ten = number / 10;
                switch (ten) {
                case 2:
                    System.out.print("twenty");
                    break;
                case 3:
                    System.out.print("thirty");
                    break;
                case 4:
                    System.out.print("forty");
                    break;
                case 5:
                    System.out.print("fifty");
                    break;
                case 6:
                    System.out.print("sixty");
                    break;
                case 7:
                    System.out.print("seventy");
                    break;
                case 8:
                    System.out.print("eighty");
                    break;
                case 9:
                    System.out.print("ninety");
                    break;

                default:
                    break;
                }

                int lastDigit = number % 10;
                if (lastDigit > 0) {
                    System.out.print(" ");
                    printTheLastDigitFrom1To9(lastDigit);
                }
            } else {
                if (number < 10) {
                    printTheLastDigitFrom1To9(number);
                } else {
                    switch (number) {
                    case 10:
                        System.out.print("ten");
                        break;
                    case 11:
                        System.out.print("eleven");
                        break;
                    case 12:
                        System.out.print("twelve");
                        break;
                    case 13:
                        System.out.print("thirteen");
                        break;
                    case 14:
                        System.out.print("fourteen");
                        break;
                    case 15:
                        System.out.print("fifteen");
                        break;
                    case 16:
                        System.out.print("sixteen");
                        break;
                    case 17:
                        System.out.print("seventeen");
                        break;
                    case 18:
                        System.out.print("eighteen");
                        break;
                    case 19:
                        System.out.print("nineteen");
                        break;

                    default:
                        break;
                    }
                }
            }

        } else if (number == 0) {
            System.out.println("Zero");
        } else {
            System.out.println("Error! - The number is Out of Range!!!");
        }
    }

    private static void printTheLastDigitFrom1To9(int digit) {
        // TODO Auto-generated method stub
        switch (digit) {
        case 1:
            System.out.print("one");
            break;
        case 2:
            System.out.print("two");
            break;
        case 3:
            System.out.print("three");
            break;
        case 4:
            System.out.print("four");
            break;
        case 5:
            System.out.print("five");
            break;
        case 6:
            System.out.print("six");
            break;
        case 7:
            System.out.print("seven");
            break;
        case 8:
            System.out.print("eight");
            break;
        case 9:
            System.out.print("nine");
            break;

        default:
            break;
        }
    }

}