[HELP] Cardinal Number System...

Hi guys, please help me T_T


Here is what is SUPPOSED to happen:

Input Number >> 55
Output >> five-five
Input Number >> 790
Output >> seven-nine-zero

The red is just a system.err message
The green is user input into the Java console
The black is what the application is printing (system.out)


All I am able to produce is single digits and their cardinal outputs.
So, 5 --> five, 8 --> eight, and etc.

When I input numbers with multiple digits such as 425, I don't get any output at all.


My question is: How do I get my program to print multi-digit inputs?
Such as 415 --> four-one-five

Also, a dash is supposed to separate the strings.


Here is my code:

import java.util.Scanner;

public class Lab3 
{
	// instance variable
	private Scanner scan;
	private String cardString;
	
	public static void main (String [] args)
	{		
		Lab3 G = new Lab3();
		
		G.printCardinals();
		
	}
	
	// Initializes the Scanner object for this Lab3 object. 
	public Lab3() 						
	{	
		// create Scanner object
		scan = new Scanner(System.in); 		
	}
	
	// get user input
	// switch statement
	// output cardinal number representation
	public void printCardinals()
	{
		int enter;
		boolean quit = false;
		while (! quit)
		{
			//while (enter)
			// prompt user
			System.err.print("Input a number to get a cardinal number\n" +
					"representation of your number.\n" +
					"(Type any negative number to quit program): ");
			
			int num = scan.nextInt();
			
			
			// if user input is negative, exit program
			if (num < 0)
			{
				quit = true;
				System.err.println("Exiting program, bye!");
			} // end if statement
			
			String cardString  = "";
			
			// if num is not negative, run switch
			switch (num)
			{
				case 0:		cardString = "zero";
					break;
				case 1: 	cardString = "one";
					break;
				case 2:		cardString = "two";
					break;
				case 3:		cardString = "three";
					break;
				case 4:		cardString = "four";
					break;
				case 5:		cardString = "five";
					break;
				case 6:		cardString = "six";
					break;
				case 7:		cardString = "seven";
					break;
				case 8:		cardString = "eight";
					break;
				case 9:		cardString = "nine";
					break;
			} // end switch
					
			// output cardinal numbers 				
			System.out.println(cardString);
			
		} // end while
	} // end printCardinals method
} // end class

One last thing:

I asked my teacher for a HINT and all he said was... "Loop". Derp.