i getting a NullPointerException when
trying get a session ,and i found it is because i got a null sessionFactory

i am new to hibernate, and now doing with a one-to-many case.
i am sure the connection to db is well, and web application can find the datasource........ i can see these from command line of tomcat:
using datasource: java:comv/env/jdbc/pim

so .... why the sessionFactory is null?

the code is:

try {
sessionFactory = (new Configuration()).configure().buildSessionFactory();
}catch(HibernateException he) {

}

i put all *.hbm.xml and hibernate.cfg.xml under classes.

help~~~~~~~~~~~~~~~~~~~

Have you got a hibernate.cfg.xml or hibernate.properties file in the root of your classpath?

If the problem persists:
1) Read the documentation
2) enabled logging in your log4j.properties file (log4j.logger.net.sf.hibernate=debug) and post the trace.

And put some feedback in the catch block !