Get binary with JNDI - maybe OT

["Rudi Verago \[vlain\]" <vlain@libero.it>]

I have a directory where are save file in different formats.
In the beginning I use datahandler, after convert to byte[] and save on LDAP.
When I try to get with:
answer = ctx.getAttributes(rni,attr).get("dataBinary");
byte[] resultByte = ((byte[])answer.get());

I obtain cast exception, why?
If data are text file and I made a string cast I see it correctly.
Sorry for my English,
Thanks,

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