// Create a new workbook Workbook workbook = new Workbook(); //ToJson&FromJson can be used in combination with spread.sheets product //Document Solutions for Excel import an excel file. //Change the path to real source file path. String source = "source.xlsx"; workbook.open(source); //Open the same user file Workbook new_workbook = new Workbook(); new_workbook.open(source); for (IWorksheet worksheet : workbook.getWorksheets()) { //Do any change of worksheet //... //Document Solutions for Excel export a worksheet to a json string. String json = worksheet.toJson(); //Use the json string to initialize spread.sheets product. //Product spread.sheets will show the excel file contents. //Use spread.sheets product export a json string of worksheet. //Document Solutions for Excel use the json string to update content of the corresponding worksheet. new_workbook.getWorksheets().get(worksheet.getName()).fromJson(json); } //Document Solutions for Excel export workbook to an excel file. //Change the path to real export file path. String export = "export.xlsx"; new_workbook.save(export);