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....to find out what format (PPT, PPTX, ODP, and others) the presentation...getPresentationInfo ( "pres.pptx" ); System . out . println (...