Using RECORD returning functions with JDBC

Hi, now I know that in order to call a SETOF RECORD function i have to put
something like:
Select foo(param1,param2) as (ccolname1,colname2)

Now I am using JDBC and CallableStatement.
How should I give the column name list so that the function works ok?
Suppose i have the foo function that returns a SETOF RECORD and a callable
statement c.

Thanks a lot!

JuanF
(A newbie in evolution!)