In this way Android reminds me very much of Erlang or QNX Neutrino RTOS.
I also used this classes in Quickdroid a lot. Quickdroid allows you to quickly search, find and launch apps, contacts, bookmarks, artists, albums and songs on your Android phone. It is just like Quicksilver for Mac OS X, Launchy for Microsoft Windows or GNOME Do for Linux.
The Quickdroid source code is freely available here under the Apache 2 license.