Servlet de resgate de dados do banco

package Controller;

import java.io.*;
import java.net.*;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;

import javax.servlet.*;
import javax.servlet.http.*;

public class Resgate extends HttpServlet {

    private String TESTE_OK;
    private String erro;
    PreparedStatement stmt=null;
    private String n;
    ResultSet rs = null;
    private String teste;
    Connection con = null;     
  
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        
          
      
          try{
    String email=request.getParameter("email"); 
       
    Class.forName("com.mysql.jdbc.Driver");       
    con = DriverManager.getConnection("jdbc:mysql://localhost:3306/teste","root","root");       
    stmt = con.prepareStatement("select nome from teste2 where email=?");    
    stmt.setString(1,email);
    rs = stmt.executeQuery();
               
             String nome;
             int flag=0;
          if (rs.next())
               {
                 nome=rs.getString("nome"); 
                 request.setAttribute("nome","nome"); 
                 RequestDispatcher requestDispatcher= request.getRequestDispatcher("/index.jsp"); 
                 requestDispatcher.forward(request, response); 
                   flag=1;
              }
    
   
             if (flag==1)
              {
                    request.setAttribute("error","Dado nao encontrado"); 
                 RequestDispatcher requestDispatcher= request.getRequestDispatcher("/index.jsp"); 
                 requestDispatcher.forward(request, response); 
               }
           
    }
    catch(Exception e)
       {
          erro = e.getMessage();   
        }
        
    }
      
     protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }
    
       protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }
    
      public String getServletInfo() {
        return "Short description";
    }
    // </editor-fold>
}