code: public static void printStatInfo(String outputDirPath, File pdfFile, int pageNum, int tableNum) {
      	try {
      		File classificationData = new File(outputDirPath, "statInfo");
      		if (!classificationData.exists()) {
      			classificationData.mkdirs();
      		}
      		File fileName = new File(classificationData, "tableNumStatInfo.txt");
      		BufferedWriter bw0 = new BufferedWriter(new FileWriter(fileName, true));
      		bw0.append(outputDirPath+pdfFile.getName() + "\t\t" + pageNum + " PAGES\t\t" +  tableNum + " TABLES\n");
      		bw0.close();
      	}
      	catch (IOException e){
      		System.out.printf("[Debug Error] IOException\n");
      	}
      }
docs: After processing all the PDF documents, this method helps us to get the statistic information of all the PDF documents
  such as the total number of pages, tables, etc.
  
  @param outputDirPath
  the directory path where the middle-stage results will go to
  @param pdfFile
  the PDF file being processed
  @param pageNum
  the total number of pages in the PDF directory
  @param tableNum
  the total number of detected tables in the PDF directory
  @throws IOException