EJB 3 TrailBlazer Demo Class Cast

[pkraemer]

Well I know that there are several Threads about the ClassCast Problem, but nothing helped me realy - except looking that I did not have these errors.

So, I use JBoss 4.04 and started with the TrailBlazer Demo about StatelessSessionBeans.

I can start the JSP but I got a ClassCastException during it.

I have deployed it to TrailBalzerApplication.ear which contains:

TrailBlazerApplication.ear
 application.xml
 jboss-app.xml
 TrailBlazerEJB.jar
 TrailBlazerWeb.war

The application.xml:

<application xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="1.4" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/application_1_4.xsd">
 <display-name>TrailBlazerApplication</display-name>

 <module id="myeclipse.1170763402122">
 <ejb>TrailBlazerEJB.jar</ejb>
 </module>

 <module id="myeclipse.1170763401891">
 <web>
 <web-uri>TrailBlazerWeb.war</web-uri>
 <context-root>TrailBlazerWeb</context-root>
 </web>
 </module>
</application>

The jboss-app.xml

<?xml version="1.0" encoding="UTF-8"?>
<jboss-app>
 <loader-repository>
 trailblazerOne:app=ejb3
 </loader-repository>
</jboss-app>

The SessionBean

package trail.slsb;

import org.jboss.annotation.ejb.LocalBinding;

import javax.ejb.*;

@Stateless
@LocalBinding (jndiBinding="EJB3TrailBlazer/slsb/Calculator")
public class StatelessCalculator implements Calculator {

 public double calculate (int start, int end, double growthrate, double saving) {
 double tmp = Math.pow(1. + growthrate / 12., 12. * (end - start) + 1);
 return saving * 12. * (tmp - 1) / growthrate;
 }

}

Part of the jsp:

 <%@ page import="trail.slsb.*, javax.naming.*, java.text.*"%>

 <%!
 private Calculator cal = null;
 public void jspInit () {
 try {
 InitialContext ctx = new InitialContext();
 cal = (Calculator) ctx.lookup(
 "EJB3Trail/StatelessCalculator/local");
 } catch (Exception e) {
 e.printStackTrace ();
 }
 }
 %>

There are no errors during deployment

Can anybody please help me?

Thanks