Review

class HexArrayField {
   /**
    * The hexadecimal value that is contained
    * in the cells of this field.
    *
    * @return The hexadecimal value of this.
    */
   public byte[] getValue() {
      byte[] data = new byte[length];
      for (int i=0; i < length; i++) {
         /* (1) lcLbl, (2) lcHexLbl, (3) smallerButton, (4) largerButton. */
         HexField tf = (HexField)getComponent(4 + i);
         data[i] = tf.getValue()[0];
      }
      return data;
   }

}