[RESOLVIDO]Probleminha simples com Servlet

Front-end
#1

Bom, eu estou iniciando com servlets e estou tentando fazer um exemplo contendo uma caixa com nome e senha, ai vc digita e se estiver correto exibe uma mensagem, só que, estou tendo problemas quando executo o arquivo aparece no browser, tudo direitinho, as caixas, os labels, e o botão logar, só que quando clico no logar abre uma nova aba no browser a aparece um negócio escrito 404 error e nao sei como resolver, estou colocando os 3 arquivos que fiz no netbeans 5.5:
Esse é o index.jsp

<%@page contentType="text/html"%>
<%@page pageEncoding="UTF-8"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   "http://www.w3.org/TR/html4/loose.dtd">

<html>
    <head>
        <title>Fazendo um teste com login e senha</title>
    </head>
    
    <body>
        <form action="NovoServlet" method="processRequest">
            Login: <input type="text" name="login" />
            Senha :<input type="text" name="senha" />
            <input type="submit" value="Logar" />
        </form>
    </body>
</html>

Esse é o NovoServlet.jsp

import java.io.IOException;
import java.io.PrintWriter;
import java.net.*;

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


public class NovoServlet extends HttpServlet {
    
    public void destroy(){
        super.destroy();
    }
   
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        
        response.setContentType("text/html;charset=ISO-8859-1");
        
        String usuario = request.getParameter("usuario");
        String senha = request.getParameter("senha");
        
        String html = 
                "<html><head>"+
                "<title>Fazendo um teste com campos</title>"+
                "</head>"+
                "<body>";
                
        if (usuario.equalsIgnoreCase("a") && senha.equalsIgnoreCase("a"))
            html = "Ok, bem vindo Moa.";
        else
            html = "usuario nao autorizado";
        html += "</body></html>";
        
        response.setContentType("text/html");
        PrintWriter writer = response.getWriter();
        writer.print(html);
        writer.close();
    }
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        
    }
    public void init() throws ServletException {
        super.init();
    }
    public String getServletInfo() {
        return "Short description";
    }
}

E esse é o web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
    <servlet>
        <servlet-name>NovoServlet</servlet-name>
        <jsp-file>/index.jsp</jsp-file>
        </servlet>
    <servlet-mapping>
        <servlet-name>NovoServlet</servlet-name>
        <url-pattern>/NovoServlet</url-pattern>
    </servlet-mapping>
    <session-config>
        <session-timeout>
            30
        </session-timeout>
    </session-config>
    <welcome-file-list>
	<welcome-file>
            index.jsp
        </welcome-file>
    </welcome-file-list>
</web-app>
#2

coloca post no method

#3

Tente fazer assim:

index.jsp

<form action="/NovoServlet" method="post">

NovoServlet.jsp

import java.io.IOException;
import java.io.PrintWriter;
import java.net.*;

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


public class NovoServlet extends HttpServlet {
    
    public void destroy(){
        super.destroy();
    }
   
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        
        response.setContentType("text/html;charset=ISO-8859-1");
        
        String usuario = request.getParameter("usuario");
        String senha = request.getParameter("senha");
        
        String html = 
                "<html><head>"+
                "<title>Fazendo um teste com campos</title>"+
                "</head>"+
                "<body>";
                
        if (usuario.equalsIgnoreCase("a") && senha.equalsIgnoreCase("a"))
            html = "Ok, bem vindo Moa.";
        else
            html = "usuario nao autorizado";
        html += "</body></html>";
        
        response.setContentType("text/html");
        PrintWriter writer = response.getWriter();
        writer.print(html);
        writer.close();
    }
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        doPost(request, response);
    }
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }
    public void init() throws ServletException {
        super.init();
    }
    public String getServletInfo() {
        return "Short description";
    }
}

jjander.cunha, tem que mudar o metodo doPost no servlet tb

#4