private ZipFile doGetZipFile() throws IOException {
        if (FILE_PROTOCOL.equals(myURL.getProtocol())) {
          String s = unescapePercentSequences(myURL.getFile().replace('/', File.separatorChar));
          if (new File(s).exists()) {
            return new ZipFile(s);
          }
        }

        return null;
      }
private ZipFile doGetZipFile()