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....a new Workbook. //Open an existing Excel file. Workbook wb = new...new Workbook ( "ResultedBook.xls" ); //Create a Worksheets object...