How to configure Voice control in OpenHab Home Automation system
Tutorial : build full Java server with Tomcat8 at public IP with Raspberry Pi
It can not be truly easier to build your own Java server with Tomcat and expose it to public IP address. You will get facility to host you Java apps with zero cost for hosting plus users will able to use it at public IP. Ideal for hobby-coders.
Tutorial : Google Custom Search in Android app
If you want to search something inside your Android app using Google – this tutorial can be usefull.
Tutorial : Openshift DIY GlassFish setup
Build your own Java EE GlassFish server and place it to OpenShift Cloud for free.