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....//Instantiating a Workbook object Workbook workbook = new Workbook ( "../...worksheet Worksheet sheet = workbook . Worksheets [ 0 ]; //Create...