Class Libraries & REST APIs for the developers to manipulate & process Files from Word, Excel, PowerPoint, Visio, PDF, CAD & several other categories in Web, Desktop or Mobile apps. Develop & deploy on Windows, Linux, MacOS & Android platforms...." ) file_format_type = FileFormatType workbook...dataDir + "HelloWorld.xls" , file_format_type . EXCEL_97_TO_2003 )...