I am new to Hibernate and i am using 
NetBeans IDE 5.0 for developing J2EE application which uses 
Struts and 
Hibernate. 
There is a User class and UserFacade class, I am creating an object of UserFacade in an execute() method of Struts Action class, but when ever calling generate() (generating few datas) , or findByName(String) method it shows the following exception. 
Code:
java.lang.ExceptionInInitializerError
   com.model.HibernateUtil.getSessionFactory(HibernateUtil.java:42)
   com.model.HibernateUtil.currentSession(HibernateUtil.java:53)
   com.model.UserFacade.saveUser(UserFacade.java:11)
   com.model.UserFacade.generate(UserFacade.java:23)
   com.service.action.LoginAction.execute(LoginAction.java:44)
   org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
   org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
   org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
   org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
   javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
   javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
But in some other example i have executed the same code using JSP page, there werent such Exceptions. Please help me to solve this problem.