The flickrj-android library is designed to wrap the Flickr API and provide improved support for Android and the Google App Engine. This library also supports Java 5 syntax and the new Flickr OAuth authentication model.
So, you're trying to share some files with someone who only has access to an old version of Word. Or maybe that Microsoft-hating friend of yours who only uses WordPerfect. Perhaps you want that old-school ebook to be an epub, rather than .lit. For any of these problems, there are desktop apps that work, of course. However, sometimes you want to be able to do that within a program. If so, Doxument and the beautiful Doxument API are what you need.