Passing an array or record to a stored procedure in PostgreSQL

Hi Highly Respected Hackers!

I have a task to pass arrays, records and in some cases array of
records as a parameter to the stored procedures in PostgreSQL. I will
use JDBC to work with PostgreSQL 9.0 At first I would like to learn
how to pass arrays.

Any ideas?

p.s. Google and http://dba.stackexchange.com/ gave me no answer...

Thank you in advance!
Max