Use something like: Code: public void onBlockRedstone(BlockRedstoneEvent event) { //Your code } Please see http://javadoc.lukegb.com/BukkitAPI/ for future reference.
You can also take a look at this: http://robhol.net/wiki/index.php?title=OnBlockRedstoneChange The fact that my efforts aren't being appreciated doesn't mean the existing "fruits" of my apparently pointless labor can't help anyone, I guess.