I have some data in Japanese character and when i try to query one of the table those JP char turns out to be rubbish characters.

I've tried the steps below:

   1. copy unicode fonts file to JRE lib/fonts folder
   2. change Regional Option to Japanese (in General and Advanced tab).
   3. change font type in Fonts tab in Global Preference.

However, all these changes still wont resolve the rubbish character problem. Appreciate any help. Thanks