return mf.format(arguments, sb, fp).toString();
return mf.formatInternal(arguments, sb, fp, null).toString();
  public static String format (String pattern, Object arguments[])  {    MessageFormat mf = new MessageFormat (pattern);    StringBuffer sb = new StringBuffer ();    FieldPosition fp = new FieldPosition (NumberFormat.INTEGER_FIELD);    return mf.format(arguments, sb, fp).toString();  }