In this project, an app was created with 2 flavors (paid and free) that uses multiple libraries and Google Could Endpoints. The app consists of four modules. A Java library that provides jokes, a Google Could Endpoints (GCE) project that serves those jokes, an Android Library containing an activity for displaying jokes, and an Android app that fetches jokes from the GCE module and passes them to the Android Library for display.
Simply click button to display various (computer related) jokes via a toast.