// Create a new workbook Workbook workbook = new Workbook(); workbook.open(this.getResourceStream("xlsx/PageSetup Demo.xlsx")); IWorksheet worksheet = workbook.getWorksheets().get(0); //Set center, default is false. worksheet.getPageSetup().setCenterHorizontally(true); worksheet.getPageSetup().setCenterVertically(true); // Save to an excel file workbook.save("ConfigPageCenter.xlsx");