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 * and open the template in the editor.
 */

import com.mysql.jdbc.Connection;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 *
 * @author Prasanth
 */
public class update extends HttpServlet {

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException, ClassNotFoundException, SQLException {
        response.setContentType("text/html;charset=UTF-8");
         Class.forName("com.mysql.jdbc.Driver");
        System.out.println("Connecting to database......");
        String h=Insert.uu;
         Connection con=(Connection) DriverManager.getConnection("jdbc:mysql://localhost/j2ee","root","root");
        System.out.println("Connected to Database");

        try (PrintWriter out = response.getWriter()) {
            /* TODO output your page here. You may use following sample code. */
            Cookie ck[]=request.getCookies();
            String u=ck[0].getValue();
            //System.out.println(u);
             String p = request.getParameter("pass");
             String n=request.getParameter("name");
              String a = request.getParameter("ag");
              int age=Integer.parseInt(a);


                HttpSession session=request.getSession(false);
                String uidd=(String)session.getAttribute("uname");

            String sql="update userinfo set pass=?,name=?,age=? where uid=?";
            PreparedStatement stmnt;
            stmnt=con.prepareStatement(sql);
            stmnt.setString(4,u);
            stmnt.setString(1,p);
            stmnt.setString(2,n);
            stmnt.setInt(3, age);
            stmnt.executeUpdate();

            out.println("<!DOCTYPE html>");
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet update</title>");
            out.println("</head>");
            out.println("<body>");
            out.println("<h1>Successs </h1>" );
            out.println("</body>");
            out.println("</html>");
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        try {
            processRequest(request, response);
        } catch (ClassNotFoundException ex) {
            Logger.getLogger(update.class.getName()).log(Level.SEVERE, null, ex);
        } catch (SQLException ex) {
            Logger.getLogger(update.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        try {
            processRequest(request, response);
        } catch (ClassNotFoundException ex) {
            Logger.getLogger(update.class.getName()).log(Level.SEVERE, null, ex);
        } catch (SQLException ex) {
            Logger.getLogger(update.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}