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 (); // Put sample text in the first cell of the first...get ( "A1" ). putValue ( "DEMO TEXT ON SHEET1" ); // Add second...