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 ( i ); } catch ( Exception x ) { return null ; } String key...catch ( MalformedURLExceptio x ) { msg . sendMessageDialog (...