code: public static void main(final String[] args) {
          String url = "http://files.grouplens.org/datasets/movielens/ml-100k.zip";
          String folder = "data3/ml-100k";
          DataDownloader dd = new DataDownloader(url, folder);
          dd.downloadAndUnzip();
      }
docs: Main method.
  
  @param args argument (not used)