This episode will teach you a very important tip to elevate your plugins: Allowing your configuration file to be reloaded in-game. Now, server owners don't need to restart every time the modify a configuration file!
Code:
Announcer.java ~ http://pastebin.com/mLeDer1L
config.yml ~ http://pastebin.com/nXd8jAct
plugin.yml ~ http://pastebin.com/gqJNyvEH