Thread: numbers to words using do-while & if-else & JOptionPane

greetings everyone.. this is my first post.. i would just like to ask how to shorten my code.. basically, this is a working code already.. i was told that there is a way to shorten this.. the given problem was to make a working code that would get a number input from 1-15 and display it as a word(one, two..., fifteen).. /*i just shortened it here*/

our college instructor wouldnt tell us how coz he expects us to figure this out on our own.. this code was already submitted to my instructor.. so, this is not in any way a project or a school assignment anymore.. i would just like to know how to shorten my code..

to my disadvantage, i last tackled java way back in 2004.. and havent been using it since... and now, i am stuck to figuring out how to shorten my code..

here it is...

import javax.swing.*;
 
public class NumbersToWords {
	public static void main(String[] args){
 
		int n=0;
		String word="";
 
		do{
			word = JOptionPane.showInputDialog("Enter a Number: ");
			n = Integer.parseInt(word);
 
			if( n == 1 ){
				JOptionPane.showMessageDialog(null, "One");
			}
			else if( n == 2 ){
				JOptionPane.showMessageDialog(null, "Two");
			}
			else if( n == 3 ){
				JOptionPane.showMessageDialog(null, "Three");
			}
			else if( n == 4 ){
				JOptionPane.showMessageDialog(null, "Four");
			}
			else if( n == 5 ){
				JOptionPane.showMessageDialog(null, "Five");
			}
			else{
				JOptionPane.showMessageDialog(null, "Invalid Number!");
			}
		}while((n<=5) && (n>=0));
		System.exit(0);
	}
}

im hoping you guys could give me a helping hand.. like to just point me in the right direction, and i will make the codes myself.. ^_^ thank you so much

Just my guess, but I'd say he was hinting at using an array.

Originally Posted by mikkko

actually, there were some that used array(just found out today, coz that problem was given last tuesday(philippine time))..

i made mine too long coz that was all i know.. ^_^

would it be possible to assign numbers as Strings and initialize them with the equivalent words like:

String 1="One", 2="Two"....

to be able to use them as increments?

If you really want to go that route, it sounds like a job for a Map.

Originally Posted by mikkko

can you please enlighten me as to what that is? im like level 1(EXP:0) here.. ^_^

The first two results for googling "java map":
The Map Interface (The Java™ Tutorials > Collections > Interfaces)
Map (Java 2 Platform SE v1.4.2)

But really, stop worrying so much. There are always going to be ways to shorten your code this early in the game, I really wouldn't spend THAT much time trying to cut it down- unless that's your assignment, in which case asking us how to do it defeats the purpose. Does it work? Do you understand why? Then don't worry about it.