Earthquakes in Japan?

Japan is very used to earthquakes, they happen just about everyday. Most aren't very big, bit every once in awhile a large earthquake will happen (like the 9.0) and earthquakes/aftershocks will continue to occur for a few months. They should be alright for a long time. Japan's buildings are built to withstand earthquakes so I wouldn't worry too much. Besides, most of the damage was caused by the tsunami, and not the earthquake itself.