docs: public static boolean isNumeric(String string, boolean bAllowFormatting)
      {
          if ((string == null) || (string.length() == 0))
              return false;
          boolean bIsNumeric = true;
          for (int i = 0; i < string.length(); i++)
          {
              if (!Character.isDigit(string.charAt(i)))
              {
              	if ((!bAllowFormatting)
              		|| (Character.isLetter(string.charAt(i))))
              			bIsNumeric = false;
              }
          }
          return bIsNumeric;
      }