sessionFactory = new Configuration().configure().buildSessionFactory();

Session session = HibernateUtil.getSessionFactory().openSession();
       
        try {
            Query getMessages = session.createQuery("from Message order by id desc");
            getMessages.setMaxResults(5);
            this.messageList = getMessages.list();
        } finally {
//            session.close();
        }

<session-factory name="sessionOne">
    <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
    <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
    <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/test</property>
    <property name="hibernate.connection.username">user</property>
    <property name="hibernate.connection.password">pass</property>
    <property name="hibernate.connection.provider_class">org.hibernate.connection.C3P0ConnectionProvider</property>
    <property name="hibernate.connection.pool_size">10</property>
    <property name="hibernate.c3p0.min_size">5</property>
    <property name="hibernate.c3p0.max_size">10</property>
    <property name="hibernate.c3p0.timeout">300</property>
    <property name="hibernate.c3p0.max_statements">50</property>
    <property name="hibernate.c3p0.idle_test_period">300</property>
    <!-- Disable second-level cache. -->
    <property name="hibernate.cache.provider_class">org.hibernate.cache.NoCacheProvider</property>
    <property name="hibernate.cache.use_query_cache">false</property>
    <property name="hibernate.cache.use_minimal_puts">false</property>
    <property name="hibernate.max_fetch_depth">3</property>
    <!-- Print SQL to stdout. -->
    <property name="hibernate.show_sql">true</property>
    <property name="hibernate.format_sql">true</property>
    <!-- Bind the getCurrentSession() method to the thread. -->
    <property name="hibernate.current_session_context_class">thread</property>
    <property name="hibernate.hbm2ddl.auto">update</property>

    <mapping resource="model/Message.hbm.xml"/>
  </session-factory>

jstack <app-server-pid>

<%
            boolean populateCurrentMessages = mm.populateCurrentMessages();
            model.Message message = null;
            int count = mm.getMessageList().size();
            Iterator<model.Message> itr = mm.getMessageList().iterator();
         
                while (itr.hasNext()) {
                    message = (model.Message) itr.next();
    %>
    <div class="message" id="message<%=message.getId()%>">
    <p id="message-item">
        <b><%=message.getSender().getUserName()%></b>

    </p>
       
    <p> <%=message.getUser().getUserName()%>   
    </p>

    </div>
   
    <%

        }

    %>

message.getSender().getUserName()

and/or

message.getUser().getUserName()

<%
            boolean populateCurrentMessages = mm.populateCurrentMessages();
            model.Message message = null;
            int count = mm.getMessageList().size();
            Iterator<model.Message> itr = mm.getMessageList().iterator();
         
                while (itr.hasNext()) {
                    message = (model.Message) itr.next();
    %>
    <div class="message" id="message<%=message.getId()%>">
    <p id="message-item">
        <b><%=message.getSender().getUserName()%></b>

    </p>
       
    <p> <%=message.getUser().getUserName()%>   
    </p>

    </div>
   
    <%
          mm.closeSession();  // you must implement this method by closing the session you used for making the query
        }

    %>