Thread: NumberWords

Hello, I am trying to create a program that will convert any number from 1 to 999 from its digit representation to its word representation. But I cannot figure out how to display it after the user has entered it. Here is what I have so far:

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package numberwords1v1;
import java.io.*;
 
 
/**
 *
 * 
 */
public class NumberWords1V1 {
 
    /**
     * @param args the command line arguments
     */
    public static void main (String args []) throws IOException {
 
        BufferedReader br = new BufferedReader (new InputStreamReader (System.in)); //user input
        System.out.println("Numbers to Words (1-999 Edition)");
        System.out.println("================================ ");
        int tryAgain = 1; //will initiate the first do-while loop of the program.
        do {
            System.out.println();
            System.out.println("Input a number (1-999) and this program will repeat it to you with words.");
            double numInput = Integer.parseInt(br.readLine()); //user inputs number
            System.out.println();
 
            int error = 1; //will initiate error check
 
            do {
                if (numInput < 1 || numInput > 999) {//if the user enters an invalid number
                    System.out.println("Invalid number.  Enter a number between 1 and 999.");
                    numInput = Integer.parseInt(br.readLine()); //user must re-enter a number if they entered an invalid one
                    System.out.println();}
                else {
                    error = 0;} //will end error loop if the number is correct
            } while (error == 1);
 
            System.out.println();
 
            double hundredsDigit = Math.floor(numInput);
            double tensDigit = Math.floor((numInput % 100) / 10);
            double onesDigit = numInput % 10;
 
            System.out.print("Your number in words is: " );
 
            if ((numInput >= 1) && (numInput <= 9)) {//will initiate the ones subroutine
                ones(onesDigit);}
 
            if ((numInput >= 10) && (numInput <= 19)) {//will initiate the teens subroutine
                teens(numInput);}
 
            if ((numInput >= 20) && (numInput <= 99)) {//will initiate the tens and ones subroutine
                tens(tensDigit);
                System.out.print(" "); //puts a space between the tens and ones 
                ones(onesDigit);}
 
            if ((numInput >= 100) && (numInput <= 999)) {//will initiate the hundreds, tens and ones subroutine
                hundreds(hundredsDigit);
                System.out.print(" "); //puts a space between the hundreds and tens
                tens(tensDigit);
                System.out.print(" "); //puts a space between the tens and ones
                ones(onesDigit);
            }
                System.out.println();
                System.out.println();
                System.out.println("Press 1 to try again.");
                tryAgain = Integer.parseInt(br.readLine()); //user decides to try again
                System.out.println();
 
          } while (tryAgain == 1); //will repeat program if user chooses to enter another number
 
          } //closes main body
 
        public static void hundreds(double hundredsDigit){
 
            } //closes hundreds method
 
        public static void tens(double tensDigit){
 
          } //closes tens method
 
        public static void teens(double numInput){
 
          } //closes teens method    
 
        public static void ones(double onesDigit) {
 
          }//closes ones method
 
 
    }

When I try to run the code in a scanner method, I type the number in but it doesn't show the number in words.