Não copila meu list | Java Servlet: programação web Java

Classe Banco, ja adiciona duas empresas no meu list
package br.com.alura.servelet;

import java.util.ArrayList;
import java.util.List;

public class BancoDados {


    private static List<Empresa> lista = new ArrayList<>();

static {

        Empresa obj = new Empresa();
        obj.setNome("Alura");

        Empresa obj2 = new Empresa();
        obj2.setNome("Caelum");

        BancoDados.lista.add(obj);
        BancoDados.lista.add(obj2);

    }

    public void adiciona(Empresa empresa) {

        BancoDados.lista.add(empresa);        

    }


    public List<Empresa> getEmpresa(){

        return BancoDados.lista;
    }

}

Classe recupera o list e coloca dentro de uma Servlet



package br.com.alura.servelet;

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

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.sun.media.sound.RealTimeSequencerProvider;

/**
 * Servlet implementation class ListaEmpresa
 */
@WebServlet("/listaEmpresa")
public class ListaEmpresa extends HttpServlet {
    private static final long serialVersionUID = 1L;

    protected void service(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {

BancoDados banco = new BancoDados();

        List<Empresa> lista = banco.getEmpresa();
        PrintWriter out = response.getWriter();

        request.setAttribute("empresas", lista);


        RequestDispatcher rd = request.getRequestDispatcher("/list.jsp");
        rd.forward(request, response);

    }
}


Pega os resultados da Servelet e imprime em HTML



<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
    <%@page import="java.util.List, br.com.alura.servelet.Empresa"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
    <ul>
        <%

        List<Empresa> lista =(List<Empresa>)request.getAttribute("empresas");
        for(Empresa empresa : lista) {

        %>
        <li> <%= empresa.getNome()%></li>
        <%    
        } 
        %>            
        </ul>

</body>
</html>

E apresenta o seguinte erro.

HTTP Status 500 – Internal Server Error
Type Exception Report

Message An exception occurred processing [list.jsp] at line [16]

Description The server encountered an unexpected condition that prevented it from fulfilling the request.

Exception

org.apache.jasper.JasperException: An exception occurred processing [list.jsp] at line [16]

13:         <%
14:         
15:         List<Empresa> lista =(List<Empresa>)request.getAttribute("empresas");
16:         for(Empresa empresa : lista) {
17:             
18:         %>
19:         <li> <%= empresa.getNome()%></li>


Stacktrace:
    org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:625)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:514)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:385)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:329)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
Root Cause

java.lang.NullPointerException
    org.apache.jsp.list_jsp._jspService(list_jsp.java:135)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:476)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:385)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:329)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)