topic = (Topic) initialContext.lookup("topic/topicAboutMe");
topic = (Topic) initialContext.lookup(Config.PrefixTopicName+"topicAboutMe");
  public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException  {    String  password=null, username=null;     Integer userId=null;        sp = new ServletPrinter(response, "About me");    username = request.getParameter("nickname");    password = request.getParameter("password");        // Authenticate the user    if ((username != null && !username.equals("")) || (password != null && !password.equals("")))    {      try      {        initialContext = new InitialContext();      }       catch (Exception e)       {        printError("Cannot get initial context for JNDI: " + e+"<br>");        return ;      }     }    else    {      printError("You must provide valid username and password.");      return ;    }    sp.printHTMLheader("RUBiS: About Me");    TopicConnectionFactory topicFactory = null;    TopicConnection connection = null;    TopicSession session  = null;    Topic topic = null;    String html;    try     {      // lookup the connection factory      topicFactory = (TopicConnectionFactory)initialContext.lookup(Config.TopicConnectionFactoryName);      // create a connection to the JMS provider      connection = topicFactory.createTopicConnection();      // lookup the destination      topic = (Topic) initialContext.lookup("topic/topicAboutMe");      // create a session      session  = connection.createTopicSession(false, Session.AUTO_ACKNOWLEDGE); // no transaction and auto ack    }     catch (Exception e)    {      sp.printHTML("Cannot connect to message bean MDB_AboutMe : " +e+"<br>");      return ;    }    try     {      // create a requestor to receive the reply      TopicRequestor requestor = new TopicRequestor(session, topic);      // create a message      MapMessage message = session.createMapMessage();      // set parameters      message.setString("username", username);      message.setString("password", password);      message.setJMSCorrelationID("aboutMe");      // send the message and receive the reply      connection.start(); // allows message to be delivered (default is connection stopped)      TextMessage reply = (TextMessage)requestor.request(message);      connection.stop();      // read the reply      html = reply.getText();      // close connection and session      requestor.close(); // also close the session      connection.close();    }     catch (Exception e)    {      sp.printHTML("Cannot retrieve information about you: " +e+"<br>");      return ;    }    sp.printHTML(html);    sp.printHTMLfooter();  }