jdbcs cuts string longer than 255 bytes

Hi all

I have Sybase 12.5 with jConnect4.5.

I have a table with a varchar column. When I insert data of more than 
255 bytes with the JConnect4.5's jdbc driver there's no problem. If I 
try to get the data of this column, the same jdbc driver cuts the data 
after 255 bytes.

Does anybody know why?

Simon