Convertir Numero Decimal a Romano

no tiene nada que explicar ya se darán cuenta que creamos dos arrays y le damos los valores claves.

package odds;
import java.util.*;
/**
 *
 * @author Reynaldo
 */
public class Odds {

    public static void main(String[] args) {

    int  x, i;
    int  Vn[]={ 1000, 900, 500, 400,
                  100, 90, 50, 40,
                  10, 9, 5, 4, 1 };
      String Vc[]={"m","cm","d","cd","c","xc","l","xl",
                   "x","ix","v","iv","i"};
      
      Scanner in = new Scanner( System.in );
      
      while( true ){
          x = in.nextInt();
          if( x==0 )
              break;
          System.out.printf( "%-4d   ", x);
       
          i = 0;
          while( x>0 ){
              if( x>=Vn[i] ){
                  System.out.print( Vc[i] );
                  x = x - Vn[i];
              }
              else
                  i++;
          }
          System.out.println();
      }
   }
}