Java Programming

We are retrieving Chinese data from a file and displaying it to our web page. However, for some reason, certain chinese characters are destroyed, thus resulting to 3 different characters instead of 1 character.

I found out that:
If we directly copy the bytes from the file into a new file, the chinese chars can be viewed properly in our web browser.
If we save the bytes into a new String, the chinese is displayed properly but 1 or 2 characters are destroyed (displaying 3 different garbage characters each).

Any idea on how to resolve this? Any help will be appreciated.

Thanks and Regards,
Kerwin