Sybase Stored Procedure ResultSet streaming?

Question

I am certain that this is documented somewhere, but I can't seem to find it.

Does anybody know if JDBC stored procedure results are streamed in Sybase?

In particular, if I use a CallableStatement to call a Sybase stored procedure, is it possible for the Java code start to read rows from the resulting ResultSet before the stored procedure is finished executing?

I know that this is possible in some databases, but what about Sybase?

Thanks very much!