Java Database Connectivity (JDBC)

Hi

I would like to know how to import custom java jar/class files into oracle to be used in
java stored procedure.

I am developing a oracle pl/sql procedure to call java program. The java program will be
created as procedure and will be published.

But, my question is that I do have a other external jar/class file that need to be imported
into this java program.

example
-------
raise_sal.java
--------------
import java.util.*;
import oracle.sql.*;


import cmpmsgsvc.xxxx.* ;
import cmpmsgsvc.yyyy.* ;
import cmpmsgsvc.zzzz.* ;
...........
............
............
-----------

how do I import the cmpmsgsvc jar/class file into oracle so that I don't have any
compilation errros on raise_sal.java program ??

what are the steps to import/compile and validate to do this?

thanks for your help in advance.

Thanks
rrb.