code: private static String convertISO88591toUTF8(String value) {
      try {
        return new String(value.getBytes(CharEncoding.ISO_8859_1), CharEncoding.UTF_8);
      }
      catch (UnsupportedEncodingException ex) {
        // ignore and fallback to original encoding
        return value;
      }
    }
docs: Converts a string from ISO-8559-1 encoding to UTF-8.
  @param value ISO-8559-1 value
  @return UTF-8 value