JDeveloper Tutorial does not work

Tutorial: "Developing a WEB Application Using the EJB Technology Scope"
does not work I get to step 3 - item 11 which is running the browseDepartments jsp. I get a :
500 Internal Server Error
java.lang.NoSuchMethodError: int java.lang.StringBuffer.indexOf(java.lang.String).. etc.
I have started over several time just to make sure I am following the tutorial correctly. I still get the following error. Is there an errata document on this tutorial?
Thank for any help,
Bob

500 Internal Server Error
java.lang.NoSuchMethodError: int java.lang.StringBuffer.indexOf(java.lang.String)
     java.lang.Object oracle.adf.model.binding.DCUtil.findContextObject(oracle.adf.model.BindingContext, java.lang.String)
          DCUtil.java:294
     oracle.adf.model.binding.DCBindingContainer oracle.adf.model.binding.DCUtil.findBindingContainer(oracle.adf.model.BindingContext, java.lang.String)
          DCUtil.java:537
     void oracle.adf.controller.lifecycle.LifecycleContext.initialize(oracle.adf.controller.lifecycle.Lifecycle, java.lang.String, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
          LifecycleContext.java:121
     void oracle.adf.controller.lifecycle.LifecycleContext.initialize(oracle.adf.controller.lifecycle.Lifecycle, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
          LifecycleContext.java:77
     void oracle.adf.controller.struts.actions.DataActionContext.initialize(oracle.adf.controller.lifecycle.Lifecycle, org.apache.struts.action.ActionMapping, org.apache.struts.action.ActionForm, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
          DataActionContext.java:51
     org.apache.struts.action.ActionForward oracle.adf.controller.struts.actions.DataAction.execute(org.apache.struts.action.ActionMapping, org.apache.struts.action.ActionForm, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
          DataAction.java:154
     org.apache.struts.action.ActionForward org.apache.struts.action.RequestProcessor.processActionPerform(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse, org.apache.struts.action.Action, org.apache.struts.action.ActionForm, org.apache.struts.action.ActionMapping)
          RequestProcessor.java:484
     void org.apache.struts.action.RequestProcessor.process(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
          RequestProcessor.java:274
     void org.apache.struts.action.ActionServlet.process(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
          ActionServlet.java:1482
     void org.apache.struts.action.ActionServlet.doPost(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
          ActionServlet.java:525
     void javax.servlet.http.HttpServlet.service(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
          HttpServlet.java:760
     void javax.servlet.http.HttpServlet.service(javax.servlet.ServletRequest, javax.servlet.ServletResponse)
          HttpServlet.java:853
     void com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.ResourceFilterChain.doFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse)
          ResourceFilterChain.java:65
     void oracle.security.jazn.oc4j.JAZNFilter.doFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse, javax.servlet.FilterChain)
     void com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.EvermindFilterChain.doFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse)
          EvermindFilterChain.java:16
     void oracle.adf.model.servlet.ADFBindingFilter.doFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse, javax.servlet.FilterChain)
          ADFBindingFilter.java:228
     void com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.ServletRequestDispatcher.invoke(javax.servlet.ServletRequest, javax.servlet.ServletResponse)
          ServletRequestDispatcher.java:600
     void com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.ServletRequestDispatcher.forwardInternal(javax.servlet.ServletRequest, javax.servlet.http.HttpServletResponse)
          ServletRequestDispatcher.java:317
     boolean com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.HttpRequestHandler.processRequest(com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.ApplicationServerThread, com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.EvermindHttpServletRequest, com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.EvermindHttpServletResponse, java.io.InputStream, java.io.OutputStream, boolean)
          HttpRequestHandler.java:790
     void com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.HttpRequestHandler.run(java.lang.Thread)
          HttpRequestHandler.java:270
     void com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.HttpRequestHandler.run()
          HttpRequestHandler.java:112
     void com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].util.ReleasableResourcePooledExecutor$MyWorker.run()
          ReleasableResourcePooledExecutor.java:192
     void java.lang.Thread.run()
          Thread.java:484
There is no code lines that are indetified as error.
Thanks,
Bob

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at org.jboss.axis.providers.java.RPCProvider.processMessage(RPCProvider.java:103)
at org.jboss.axis.providers.java.JavaProvider.invoke(JavaProvider.java:358)
I test this web service in a Java client and it works very fine, but with delphi client it does not work :(
Can someone help me?
[]s, Welington B. Souza

Welington,
Could you post the source of the web service that gives you the error?

JDeveloper Tutorial does not work

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