Duvida com web.xml

Front-end
#1

Ola Pessoal!

É os seguinte:
criei uma servlet que implementa ServletContextListener

package servlet;

import java.io.IOException;
import java.util.Date;

import javax.servlet.ServletContext;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet implementation class ControleDeAplicacao2
 */
public class ControleDeAplicacao2 extends HttpServlet implements ServletContextListener{
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public ControleDeAplicacao2() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		
	}

	@Override
	public void contextDestroyed(ServletContextEvent event) {
		
	}

	@Override
	public void contextInitialized(ServletContextEvent event) {
		Date inicializacao = new Date();
		ServletContext context = event.getServletContext();
		context.setAttribute("inicializacao", inicializacao);
		}

}

e criei outra servlet para testar a inicialização da primeira

package servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Date;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet implementation class AcessaAplicacao
 */
public class AcessaAplicacao extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public AcessaAplicacao() {
        super();
        // TODO Auto-generated constructor stub
    }

    
    public void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        ServletContext aplicacao = getServletContext();
        Date inicial = (Date) aplicacao.getAttribute("inicializacao");
        Date agora = new Date();
        long diferenca = agora.getTime() - inicial.getTime();
        double minutos = diferenca / (60 * 1000.0);
		PrintWriter mostra = response.getWriter();
		mostra.println("<html>");
		mostra.println("hora inicial getTime: " + inicial.getTime());
		mostra.println("hora atualgetTime: " + agora.getTime());
		mostra.println("hora inicial: " + inicial);
		mostra.println("hora atual: " + agora);
		mostra.println("diferença: " + (agora.getTime() - inicial.getTime()));
		mostra.println("minutos: " + minutos);
	}

}

e mapiei no web.xml da seguinte maneira:

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">

  <display-name>Web</display-name>
  <servlet>
     <servlet-name>AdicionaContatoServlet</servlet-name>
     <servlet-class>servlet.AdicionaContatoServlet</servlet-class>
  </servlet>
  <servlet-mapping>
     <servlet-name>AdicionaContatoServlet</servlet-name>
     <url-pattern>/AdicionaContatoServlet</url-pattern>
  </servlet-mapping>      
  <welcome-file-list>
    <welcome-file>teste1.jsp</welcome-file>
  </welcome-file-list>
  <error-page>
    <exception-type>java.sql.SQLException</exception-type>
    <location>/erro.jsp</location>
  </error-page>
  <servlet>
    <description></description>
    <display-name>TestaParametro2</display-name>
    <servlet-name>TestaParametro2</servlet-name>
    <servlet-class>servlet.TestaParametro2</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>TestaParametro2</servlet-name>
    <url-pattern>/TestaParametro2</url-pattern>
  </servlet-mapping>
   <listener>
     <listener-class>servlet.ControleDeAplicacao</listener-class>
  </listener>
  <servlet>
    <description></description>
    <display-name>AcessaAplicacao</display-name>
    <servlet-name>AcessaAplicacao</servlet-name>
    <servlet-class>servlet.AcessaAplicacao</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>AcessaAplicacao</servlet-name>
    <url-pattern>/AcessaAplicacao</url-pattern>
  </servlet-mapping>
 

</web-app>

obs: já mapiei a outra servlet(ControleDeAplicacao2) e também não funciona.

Quando testo a url [link]http://localhost:8080/nomeDoMeuProjeto/AcessaAplicacao[/link] não funciona.

obs2: se eu tirar o <listener> <listener-class>servlet.ControleDeAplicacao</listener-class> </listener> do web.xml tudo funciona, menos o link acima, e seu colocar o <listener> <listener-class>servlet.ControleDeAplicacao</listener-class> </listener> nada funciona.

O que tem de errado?
Como eu faço pra dar certo?

desde já agradeço

#2