ISC Computer Science Practical 2011 Number to Words

 ISC Computer Science Practical 2011

Write a program to input a natural number less than 1000 and display it in words.
Test your program on the sample data and some random data.
Sample input and output of the program.Input: 29
Output: TWENTY NINE
Input: 17001
Output: OUT OF RANGE
Input: 119
Output: ONE HUNDRED AND NINETEEN
Input: 500
Output: FIVE HUNDRED 


import java.util.*;
public class NumberWords {
    public static void main(String[] args) {
        ToWords numbObject = new ToWords();
        Scanner in = new Scanner(System.in);
        while (true) {
            System.out.println("Input:");
            int i = in.nextInt();
            if (i >= 1000) {
                System.out.println("Output: OUT OF RANGE");
                continue;
                }
            numbObject.toWord(i);
            System.out.println("Want to input another number? Y/N:");
            String c = in.next();
            if(c.equals("y") || c.equals("Y"))
                continue;
            else
                break;   
            }
        in.close();  
        }
    }
class ToWords {
    public void toWord(int numb) {
        this.number = numb;
        this.word = "";
        String temp = "";
        temp +=number;
        switch(temp.length()) {
            case 1:
                word = oneTwoDigit[number-1];
                          
            break;
          
            case 2:
                if ( number <= 20)
                    word = oneTwoDigit[number-1];
                  
                else {
                    if ( (temp.charAt(1)-48) == 0 )
                         word += tens[(temp.charAt(0)-48)-1];
                      
                    else   
                         word += tens[(temp.charAt(0)-48)-1]+ " "+oneTwoDigit[(temp.charAt(1)-48)-1];
                      
                    }
            break;
          
            case 3:
                if ( (temp.charAt(1)-48) == 0 && (temp.charAt(2)-48) == 0)
                    word += hundreds[(temp.charAt(0)-48)-1];
                  
                else if ( (temp.charAt(2)-48) == 0 )   
                    word += hundreds[(temp.charAt(0)-48)-1]+" AND "+tens[(temp.charAt(1)-48)-1];
                  
                else {
                    if ( (temp.charAt(1)-48) == 0 )
                        word += hundreds[(temp.charAt(0)-48)-1]+" AND "+oneTwoDigit[(temp.charAt(2)-48)-1];
                      
                    else  
                        if ( (temp.charAt(1)-48) == 1 )
                             word += hundreds[(temp.charAt(0)-48)-1]+" AND "+oneTwoDigit[(temp.charAt(2)-48)-1+10];
                        else  
                            word += hundreds[(temp.charAt(0)-48)-1]+" AND "+tens[(temp.charAt(1)-48)-1]+"-"+oneTwoDigit[(temp.charAt(2)-48)-1];  
                      
                    }
            break;
          
            case 4:
                word = "One Thousand";
              
            break;
            }  
        System.out.println(number+" in words: "+word);
        }  
    private String[] oneTwoDigit =  {"ONE","TWO","THREE","FOUR","FIVE","SIX","SEVEN",
                    "EIGHT","NINE","TEN","ELEVEN","TWELVE",
                    "THIRTEEN","FOURTEEN","FIFTEEN","SIXTEEN",
                    "SEVENTEEN","EIGHTEEN","NINETEEN","TWENTY"};  
                  
    private String[] tens =     {"TEN","TWENTY","THIRTY","FORTY","FIFTY","SIXTY",
                     "SEVENTY","EIGHTY","NINETY"};
              
    private String[] hundreds =     {"ONE HUNDRED","TWO HUNDRED","THREE HUNDRED","FOUR HUNDRED","FIVE HUNDRED",
                         "SIX HUNDRED","SEVEN HUNDRED","EIGHT HUNDRED","NINE HUNDRED"};              
    private int number;
    private String word;  
    }