looping

[markpanther]

Can anyone help me w this code some
Im tryin to convert digits to roman numerals and vice versa

import javax.swing.JOptionPane;
[COLOR=red] public class ExerRoman {
	String arabicString = new String(arabic);	String romanString = new String("");
	String aLen = arabicString.length;
	int n = 1;
	while ( n <= aLen ){
	   int i = ( aLen - n );
	   int s = parseInt(arabicString.charAt(i));
	if (n == 1)
 { romanString = RomanI[s]; }	
	if (n == 2) 
{ romanString = RomanX[s]+romanString; }			if (n == 3) 
{ romanString = RomanC[s]+romanString; }			if (n == 4) 
{ romanString = RomanM[s]+romanString; }			n++;	
	return romanString;}	
//read in first user input	
String arabic =	
JOptionPane.showInputDialog( &quot;Enter first number&quot; );
[/color][COLOR=blue]
int RomanI = new Array(&quot;&quot;,&quot;I&quot;,&quot;II&quot;,&quot;III&quot;,&quot;IV&quot;,&quot;V&quot;,&quot;VI&quot;,&quot;VII&quot;,&quot;VIII&quot;,&quot;IX&quot;);

int RomanX = new Array(&quot;&quot;,&quot;X&quot;,&quot;XX&quot;,&quot;XXX&quot;,&quot;XL&quot;,&quot;L&quot;,&quot;LX&quot;,&quot;LXX&quot;,&quot;LXXX&quot;,&quot;XC&quot;);

int RomanC = new Array(&quot;&quot;,&quot;C&quot;,&quot;CC&quot;,&quot;CCC&quot;,&quot;CD&quot;,&quot;D&quot;,&quot;DC&quot;,&quot;DCC&quot;,&quot;DCCC&quot;,&quot;CM&quot;);

int RomanM = new Array(&quot;&quot;,&quot;M&quot;,&quot;MM&quot;,&quot;MMM&quot;,&quot;IV&quot;,&quot;V&quot;,&quot;VI&quot;,&quot;VII&quot;,&quot;VIII&quot;,&quot;IX&quot;);
[/color]
	JOptionPane.showMessageDialog (		null, &quot;The product is &quot; + romanString, &quot;Romanized&quot;,	JOptionPane.PLAIN_MESSAGE );}

 

[markpanther]

Can someone show me how to fix this

    public class RomanNumeral {   
        private final int num; 
         private static int[]   
 numbers =
{1000, 900, 500, 400, 100, 90, 50, 40, 10, 9, 5 , 4, 1) ;                       
 private static String[] letters = { "M",  "CM",  "D",  "CD", "C",  "XC", "L",  "XL",  "X",  "IX", "V",  "IV", "I" };   
     public RomanNumeral(int arabic) {   
       if (arabic < 1)     
        throw new NumberFormatException(&quot;Value of     RomanNumeral must be positive.&quot;);  
        if (arabic > 3999)    
        throw new NumberFormatException(&quot;Value of RomanNumeral must be 3999 or less.&quot;); 
         num = arabic;   
    }    

   public String toRoman() {  
        String roman = &quot;&quot;;    
       int n = num;     
             for (int i = 0; i < numbers.length; i++) {             while (n >= numbers<i>) {                roman += letters<i>;   
            
 n -= numbers<i>; 
            } 
         }    
      return roman;   
    }  
  }




import javax.swing.JOptionPane;

public class ExerRoman {   
   public static void main(String args[]) {  
      String arabic = JOptionPane.showInputDialog
           ( &quot;Enter first number&quot; );  
      RomanNumeral n = new RomanNumeral(Integer.parseInt (arabic));       
     String romanString = n.toRoman();
        JOptionPane.showMessageDialog 
(null, &quot;The product is &quot; + romanString, &quot;Romanized&quot;,JOptionPane.PLAIN_MESSAGE );        System.exit(0); 
    }
}