what r the laws and punishment for each laws in Japan ?

If you want to knoow about Japanese laws, this is a very broad subject. It might be helpful if you indicated which laws or areas of laws interested you.

Since this is not my area of expertise, I searched Google under the key words "Japan laws" to get these possible sources:

http://www.japanlaw.info/
http://www.washlaw.edu/forint/asia/japan.html
http://www.mizuho-sc.com/english/ebond/law.html
http://www.japanlaw.co.jp/
(Broken Link Removed)

I hope this helps. If not, repost and indicate more specifically what information you want. Thanks for asking.