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.... Date () calendar = self . Calendar cl = calendar . getInstance...setTime ( d1 ) cl . add ( calendar . HOUR , 1 ) d2 = cl . getTime...