Erro class AdicionaContatoAction

bom galera eu to lendo a apostila da caelum de desenvolvimento pra web e nao consegui passar da parte de struts

na qual eu adiciono um contato ao banco de dados por algum motivo ele lança um NullPointerException

tah ai o codigo galera

meu struts-config.xml

[code]<?xml version="1.0" encoding="ISO-8859-1"?>

<action path="/novoContato" name="ContatoForm" type="br.com.caelum.struts.action.AdicionaContatoAction">
	<forward name="sucess" path="/listaContatos.do"/>
</action>

<action path="/teste" type="br.com.caelum.struts.action.TesteSimplesAction">
	<forward name="ok" path="/exemplo.jsp"/>
</action>

<action path="/listaContatos" type="br.com.caelum.struts.action.ListaContatosStruts">
	<forward name="lista" path="/lista.jsp"/>
	<forward name="vazia" path="/lista-vazia.jsp"/>
</action>

[/code]

meu AdicionaContatoAction

[code]package br.com.caelum.struts.action;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

import br.com.caelum.jdbc.Contato;
import br.com.caelum.jdbc.ContatoDAO;
import br.com.caelum.struts.form.ContatoForm;

public class AdicionaContatoAction extends Action {

@Override
public ActionForward execute(ActionMapping map, ActionForm form, 
		HttpServletRequest request, HttpServletResponse response) 
		throws Exception {
	System.out.println(request.getParameter("nome"));
	ContatoForm formulario = (ContatoForm)form;
	
	Contato contato = formulario.getContato();
	
	ContatoDAO dao = new ContatoDAO();
	
	dao.addContato(contato);
	
	return map.findForward("sucess");
	

}

}[/code]

o ContatoForm

[code]package br.com.caelum.struts.form;

import org.apache.struts.action.*;

import br.com.caelum.jdbc.Contato;

public class ContatoForm extends ActionForm {

private Contato contato = new Contato();

public Contato getContato(){
	
	return this.contato;
}

}[/code]

e por fim o .jsp

[code]<%@ taglib uri=“http://struts.apache.org/tags-html” prefix=“html” %>

html:html

Adicionando um contato

<html:errors/>

<html:form action="/novoContato" method="post" focus="contato.nome">

Nome:
<html:text property="contato.nome"/><br/>

Email:
<html:text property="contato.email"/><br/>

Endereco:
<html:text property="contato.endereço"/><br/>

<html:submit>Enviar Dados</html:submit><br/>

</html:form>

</html:html>[/code]

quem puder me ajudar ficarei muito grato!!

Ah galera pra ficar melhor o relatorio dos erros


HTTP Status 500 -

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: javax.servlet.ServletException: java.lang.NullPointerException
	org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
	org.apache.struts.action.ActionServlet.process(ActionServlet.java:1858)
	org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:459)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

root cause

javax.servlet.ServletException: java.lang.NullPointerException
	org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
	org.apache.struts.action.ActionServlet.process(ActionServlet.java:1858)
	org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:459)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	org.apache.struts.chain.commands.servlet.PerformForward.handleAsForward(PerformForward.java:99)
	org.apache.struts.chain.commands.servlet.PerformForward.perform(PerformForward.java:82)
	org.apache.struts.chain.commands.AbstractPerformForward.execute(AbstractPerformForward.java:51)
	org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:48)
	org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
	org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:304)
	org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
	org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:280)
	org.apache.struts.action.ActionServlet.process(ActionServlet.java:1858)
	org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:459)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

root cause

java.lang.NullPointerException
	br.com.caelum.jdbc.Contato.setNome(Contato.java:12)
	br.com.caelum.jdbc.ContatoDAO.getLista(ContatoDAO.java:37)
	br.com.caelum.struts.action.ListaContatosStruts.execute(ListaContatosStruts.java:16)
	org.apache.struts.chain.commands.servlet.ExecuteAction.execute(ExecuteAction.java:53)
	org.apache.struts.chain.commands.AbstractExecuteAction.execute(AbstractExecuteAction.java:64)
	org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:48)
	org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
	org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:304)
	org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
	org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:280)
	org.apache.struts.action.ActionServlet.process(ActionServlet.java:1858)
	org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:459)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	org.apache.struts.chain.commands.servlet.PerformForward.handleAsForward(PerformForward.java:99)
	org.apache.struts.chain.commands.servlet.PerformForward.perform(PerformForward.java:82)
	org.apache.struts.chain.commands.AbstractPerformForward.execute(AbstractPerformForward.java:51)
	org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:48)
	org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
	org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:304)
	org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
	org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:280)
	org.apache.struts.action.ActionServlet.process(ActionServlet.java:1858)
	org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:459)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)