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....resides on the Second Plot Java //Load an existing spreadsheet containing...Workbook ( dir + "PieBar.xlsx" ); //Load the Worksheet at 0 index Worksheet...