thanks for your replies! Unfortunately I cld'nt pick them up.
Well, At this contract where I work I might have to use javastored procedures , but I'm not sure when and where to use it over PL/SQL stored procedures. Besides this is a hot area and I cld'nt find any study materials on this.
As per your query regarding where to use java stored procedure over pl/sql,
To give u an example :In my organization we wanted to use host command to delete a file, but that's not possible from pl/sql, but u can do that through java stored procedure.