code: public static void main(String[] args) throws IOException {
      if (args.length != 2) {
        System.out.println("java -cp " + RuntimeConstants.ALLUXIO_JAR
            + " alluxio.examples.BasicCheckpoint <FileFolder> <Files>");
        System.exit(-1);
      }
      FileSystemContext fsContext =
          FileSystemContext.create(new InstancedConfiguration(ConfigurationUtils.defaults()));
      boolean result = CliUtils.runExample(new BasicCheckpoint(args[0], Integer.parseInt(args[1]),
          fsContext));
      System.exit(result ? 0 : 1);
    }
docs: Example program for using checkpoints.
  Usage: {@code java -cp <ALLUXIO-VERSION> alluxio.examples.BasicCheckpoint <FileFolder> <Files>}
  
  @param args the folder for the files and the files to use