Encoding in java

I have a server running on java and client running on c. The client may send me data in chinese or english. How do i decode and encode the strings? When i try to display chinese unicode character on the screen ? are displayed.Please help me. Thanks in advance
[273 byte] By [javabb] at [2007-9-30 19:49:45]
# 1
This chapter in the tutorial has some information which you may find of great use - particularly the "Character and Byte Streams" section. http://java.sun.com/docs/books/tutorial/i18n/text/convertintro.html
lt.led at 2007-7-7 0:37:19 > top of Java-index,Administration Tools,Sun Connection...