In what way the Japan prepare for disaster?

Question:

when did Japan prepared to face disaster?

Answer:

Japan is a country with a history of very powerful earthquakes. In that case the Japanese are ready to face earthquakes below the magnitude of 9.0, which they got a bit lucky few weeks ago.The buildings were able to withstand the release of power through the earthquake. But unfortunately, they weren't expecting a Tsunami to occur. Hopefully, they'll come up with another defense mechanism for it like a stone bunker around the country or something. I know a bit of Tsunami, because i live in Sri Lanka and it is a country which faced a severe Tsunami attack than Japan in 2006. Mostly huge wave breakers are the only possible way....as I've heard. If there are any other ways....its great!