JSP and EJB exception

[star111792]

helo all

i am working with JSP and EJBs. i have written a simple code for verifying username and password of user by using session beans. my problem is that i am getting the following exception:

[EXCEPTION]

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.S ervletException : VerifyUser not bound
org.apache.jasp er.runtime.Page ContextImpl.doH andle PageException(P ageContextImpl. java:848)
org.apache.jasp er.runtime.Page ContextImpl.han dlePa geException(Pag eContextImpl.ja va:781)
org.apache.jsp. Verify_jsp._jsp Service(org.apa che.j sp.Verify_jsp:9 8)
org.apache.jasp er.runtime.Http JspBase.service (Http JspBase.java:97 )
javax.servlet.h ttp.HttpServlet .service(HttpSe rvlet .java:810)
org.apache.jasp er.servlet.JspS ervletWrapper.s ervic e(JspServletWra pper.java:322)
org.apache.jasp er.servlet.JspS ervlet.serviceJ spFil e(JspServlet.ja va:314)
org.apache.jasp er.servlet.JspS ervlet.service( JspSe rvlet.java:264)
javax.servlet.h ttp.HttpServlet .service(HttpSe rvlet .java:810)
org.jboss.web.t omcat.filters.R eplyHeaderFilte r.doF ilter(ReplyHead erFilter.java:8 1)

root cause

javax.naming.Na meNotFoundExcep tion: VerifyUser not bound
org.jnp.server. NamingServer.ge tBinding(Naming Serve r.java:491)
org.jnp.server. NamingServer.ge tBinding(Naming Serve r.java:499)
org.jnp.server. NamingServer.ge tObject(NamingS erver .java:505)
org.jnp.server. NamingServer.lo okup(NamingServ er.ja va:278)
org.jnp.interfa ces.NamingConte xt.lookup(Namin gCont ext.java:610)
org.jnp.interfa ces.NamingConte xt.lookup(Namin gCont ext.java:572)
javax.naming.In itialContext.lo okup(InitialCon text. java:347)
org.apache.jsp. Verify_jsp._jsp Service(org.apa che.j sp.Verify_jsp:6 7)
org.apache.jasp er.runtime.Http JspBase.service (Http JspBase.java:97 )
javax.servlet.h ttp.HttpServlet .service(HttpSe rvlet .java:810)
org.apache.jasp er.servlet.JspS ervletWrapper.s ervic e(JspServletWra pper.java:322)
org.apache.jasp er.servlet.JspS ervlet.serviceJ spFil e(JspServlet.ja va:314)
org.apache.jasp er.servlet.JspS ervlet.service( JspSe rvlet.java:264)
javax.servlet.h ttp.HttpServlet .service(HttpSe rvlet .java:810)
org.jboss.web.t omcat.filters.R eplyHeaderFilte r.doF ilter(ReplyHead erFilter.java:8 1)

note The full stack trace of the root cause is available in the Apache Tomcat/5.5.9 logs.
--------------------------------------------------------------------------------
Apache Tomcat/5.5.9

[/EXCEPTION]


im also presenting code for ur consideration

 
VerifyUser.java
------------------------
 
package hina.mahmood;
import javax.ejb.*;
import java.rmi.*;
 
public interface VerifyUser extends javax.ejb.EJBObject
{
public Boolean Verify(String user, String pswd) throws RemoteException;
}// end interface
---------------------------------------------------------------------------
 
 
VerifyUserHome.java
-------------------------------
 
package hina.mahmood;
import javax.ejb.*;
import java.rmi.*;
import javax.ejb.EJBHome;
 
public interface VerifyUserHome extends javax.ejb.EJBHome
{
public VerifyUser create() throws RemoteException,CreateException;
}// end interface
--------------------------------------------------------------------------------
 
 
VerifyUserBean.java
-------------------------------
package hina.mahmood;
import javax.ejb.*;
import java.rmi.*;
import java.sql.*;
 
public class VerifyUserBean implements SessionBean
{
private SessionContext ctx;
public Boolean Verify(String user,String pswd) throws RemoteException
{
int flag=0;
Boolean bool=new Boolean("false");
try{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection con=DriverManager.getConnection("jdbc:odbc:honie");
Statement stmt=con.createStatement();
String query="Select username,password from hina";
ResultSet rs=stmt.executeQuery(query);
 
while(rs.next())
{
if((rs.getString("username").equals(user))&&(rs.getString("password").equals(pswd)))
{
flag=1;
break;
}
}// end while
}// end try
 
catch(Exception e)
{System.out.println(e);}
 
if(flag==0)
{
bool=new Boolean("false");
return bool;
}
 
else
if(flag==1)
{
bool=new Boolean("true");
return bool;
}
 
return bool;
}// end method
 
public void ejbcreate() throws RemoteException,CreateException
{}// end method
 
public void setSessionContext(SessionContext ctx)
{
this.ctx=ctx;
}
 
public void ejbPassivate()
{}
 
public void ejbActivate()
{}
 
public void ejbRemove()
{}
}// end class
----------------------------------------------------------------------------
 
[note]
Verify.jsp is the page that uses the session bean
[/note]
-------------------------------------
 
<%@ page import="java.rmi.*,javax.naming.Context,javax.naming.Initi alContext,hina.mahmood.*"%>
<%
 
String username=request.getParameter("user");
String password=request.getParameter("pswd");
InitialContext cxt=new InitialContext();
Object obj=cxt.lookup("VerifyUser");
VerifyUserHome userHome=(VerifyUserHome)javax.rmi.PortableRemoteO bject.narrow(obj,VerifyUserHome.class);
VerifyUser vs=userHome.create();
Boolean b=vs.Verify(username,password);
boolean bool=b.booleanValue();
 
if(bool)
response.sendRedirect("main.jsp");
 
else
response.sendRedirect("error.jsp");
%>
-------------------------------------------
 

can anyone plz tel me that what this exception is and how can i get rid of it???

thanks