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....Workbook workbook = new Workbook (); //Adding a new worksheet to the...pkg . createWorksheetPart ( new PartName ( "/xl/worksheets/sheet1...