postgers problem in bytea on windows os

Hello Dear

I am one of the user of postgres open source DB and i am getting the
problem from the reading the binary data of bytea field on 9.0 onwards
version with the windows OS only but it is working fine on 8.4 version on
same platform.

Problem is this produce the content size just double of original size of
content with the reading code on java language.

get bytes("bytefieldname");

if the content size in 1002 byte, it will get the data of size 2005 byte.

So plz can u help me what can i do to reduce this problem.

Thanks

Achyut