"org.hibernate.Session" ClassNotFoundException

[talha06]

Hello to all,

Despite I added all necessary .jar files to project, I always take boring exception warnings that say "class not found". I added the code and exception output below. I'll be so happy if someone can help me.

Thanx in advance..
With regards,
T
-----------------------------------------------------
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
KisiHelper kh = new KisiHelper(); // ======> *Exception Warning!!!*
try {
JSONArray arr = kh.getAll();
response.getWriter().write(arr.toString());
} catch(Exception e) {
e.printStackTrace();
}
}
---------------------------------------------------------
public class KisiHelper {

public JSONArray getAll() {
JSONArray arr = null;

try {
System.out.println("KisiHelper calisti..");
SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory();
Session session = sessionFactory.openSession();
Transaction transaction = session.beginTransaction();
String hql = "from Kisi";
Query query = session.createQuery(hql);
List<Kisi> list = query.list();
List<Kisi> kisiList = list;
arr = JSONArray.fromObject(kisiList);
transaction.commit();
session.close();
} catch(Exception e) {
e.printStackTrace();
}
return arr;
}
}
----------------------------------------------------------------
*Exception:*

java.lang.ClassNotFoundException: org.hibernate.Session
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1387)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
* at servlets.tabloDoldur.doGet(tabloDoldur.java:34)*
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
at java.lang.Thread.run(Thread.java:619)