Roman Numeral

package ptc;

import java.util.Scanner;

public class RomanNumeral extends java.lang.Number
{

    final static RomanValue[] ROMAN_VALUE_TABLE = {new RomanValue(1000, "M"), new RomanValue(900, "CM"),
            new RomanValue(500, "D"), new RomanValue(400, "CD"), new RomanValue(100, "C"), new RomanValue(90, "XC"),
            new RomanValue(50, "L"), new RomanValue(40, "XL"), new RomanValue(10, "X"), new RomanValue(9, "IX"),
            new RomanValue(5, "V"), new RomanValue(4, "IV"), new RomanValue(1, "I")};

    public static String int2roman(int n)
    {
        if (n >= 4000 || n < 1)
        {
            throw new NumberFormatException("Numbers must be in range 1-3999");
        }
        StringBuffer result = new StringBuffer(10);

        //... Start with largest value, and work toward smallest.
        for (RomanValue equiv : ROMAN_VALUE_TABLE)
        {
            //... Remove as many of this value as possible (maybe none).
            while (n >= equiv.intVal)
            {
                n -= equiv.intVal; // Subtract value.
                result.append(equiv.romVal); // Add roman equivalent.
            }
        }
        return result.toString();
    }

    private static class RomanValue
    {

        int intVal; // Integer value.
        String romVal; // Equivalent Roman numeral.

        RomanValue( int dec, String rom )
        {
            this.intVal = dec;
            this.romVal = rom;
        }
    }

    public static void main(String args[])
    {
        Scanner scanner = new Scanner( System.in );
        System.out.println("Enter an integer number to convert to Roman Numeral: ");
        int input = scanner.nextInt();
        System.out.println("You entered:" +input);

        String temp = int2roman(input);
        System.out.println(+input+" in Roman Numeral form is: " +temp);

    }

    @Override
    public double doubleValue()
    {
        // TODO Auto-generated method stub
        return 0;
    }

    @Override
    public float floatValue()
    {
        // TODO Auto-generated method stub
        return 0;
    }

    @Override
    public int intValue()
    {
        // TODO Auto-generated method stub
        return 0;
    }

    @Override
    public long longValue()
    {
        // TODO Auto-generated method stub
        return 0;
    }

}