i am beginner in java, i am trying to display user name with image jsp page when loging with email id...
plllsssss help me out...

package User_pack;

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.sql.*;
import DB.DBCon;
import javax.servlet.http.HttpSession;
import javax.servlet.RequestDispatcher;


public class Validate extends HttpServlet {

    Connection con=null;
    Statement st=null;
    ResultSet rs=null;
    String sql=null,email,pass,user,img;
    boolean flag;
    protected void login(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out=response.getWriter();
       try
       {
            HttpSession sess=request.getSession();
          email=request.getParameter("useremail");
          pass=request.getParameter("password");

           //out.print(username+","+pass);
         con=DBCon.getCon();
         out.print("h");
         st=con.createStatement();
         sql="select email,password,image from reg where Email='"+ email+"'";
         out.print("h");
         rs=st.executeQuery(sql);
         out.print("h");
         while(rs.next())
         {
           out.print("h");  
            flag=false;
         out.print(flag);
             if(email.equals(rs.getString(1))&& pass.equals(rs.getString(2)))
             {
             out.print(flag);

                 sess.setAttribute("mail", email);

               flag=true;  

               out.print(flag);
             }
         }
         check(request,response);
       }
       catch(SQLException ex)
       {
           ex.printStackTrace();
       }
    }



     public void check(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException
     {
         try
         {
        if(flag)
        {


           RequestDispatcher rd=request.getRequestDispatcher("/Zid.jsp");

           rd.forward(request, response);
        }
        else
        {
          RequestDispatcher rd=request.getRequestDispatcher("/Err1.jsp");
           rd.forward(request, response);  
        }
     }
         catch(Exception ex)
         {
             ex.printStackTrace();
         }
     }
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        login(request, response);
    }


    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}

Is this an assignment? I hope so because the code indicates that passwords are saved in PLAIN TEXT in the database! Also, the code is comparing email & password both in case-sensitive.

Anyway, you simply print out the HTML image tag, but the url needs to be dynamic. Look at the comment in the reply post here