// Create a new workbook Workbook workbook = new Workbook(); workbook.open(this.getResourceStream("xlsx/ConfigIsAutoFirstPageNumber.xlsx")); IWorksheet worksheet = workbook.getWorksheets().get(0); worksheet.getPageSetup().setCenterFooter("&P"); //Set auto page number, original first page number is 3. worksheet.getPageSetup().setIsAutoFirstPageNumber(true); // Save to an excel file workbook.save("SetIsAutoFirstPageNumber.xlsx");