I get wrong error message when i use ant server or compile server

I am using jde2.35,cedet1.0 pre3,emacs 22.1.50,jdk1.4.2 to
develop java application.But ant server and compile
server can't output the correct japaneses message.
the japanese message like \\203\\204...
I think it is encoding problem and
I'd like to know How to resove it.

Thanks.