Blank page is coming as output

Quote:

i'm trying to insert employee details in sql database but when i run the program it is showing the registration page after entering details output is not showing as blank page

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.1" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd">
    <servlet>
        <servlet-name>CreateServlet</servlet-name>
        <servlet-class>com.sai.CreateServlet</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>CreateServlet</servlet-name>
        <url-pattern>/CreateServlet</url-pattern>
    </servlet-mapping>
    <session-config>
        <session-timeout>
            30
        </session-timeout>
    </session-config>
</web-app>

public class CreateServlet extends HttpServlet 
{

    
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException 
    {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter(); 
        Connection con=null;
        Statement st=null;
       try
       {
        Class.forName("com.mysql.jdbc.Driver");
        DriverManager.getConnection("jdbc:mysql://localhost:3306/dbemployee","root","");
        con.createStatement();
        String id=request.getParameter("UserName");
        String pwd=request.getParameter("Password");
        String eAdd=request.getParameter("EmpAddress");
        String gender=request.getParameter("MaleorFemale");
        String email=request.getParameter("Email");
        String lang=request.getParameter("languages");
        String nation=request.getParameter("Nationality");
        String date=request.getParameter("RegDate");
        
        String sql="insert into Employee Values ('"+id+"' '"+pwd+"' '"+eAdd+"' '"+gender+"'  '"+email+"'  '"+lang+"'  '"+nation+"' '"+date+"')";
        st.executeUpdate(sql);
        if(id !=null | pwd != null | eAdd!=null | gender !=null |email !=null | lang !=null | nation!=null | date !=null)
        {
            RequestDispatcher rd = request.getRequestDispatcher("/success.html");
            rd.forward(request, response);
        }
        else
        {
            out.println("<font color=red>Please fill all the fields</font>");
            RequestDispatcher rd = request.getRequestDispatcher("/index.html");
            rd.forward(request, response);

        }
        
       }catch(ClassNotFoundException | SQLException  | NullPointerException e)
       {
           e.printStackTrace();
       }
       finally
		{
			try
			{
				if(st!=null) st.close();
				if(con!=null)con.close();
			}
			catch(Exception e)
			{
				e.printStackTrace();
			}
		}
    }

    // <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 {
        processRequest(request, response);
    }

    /**
     * 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 {
        processRequest(request, response);
    }

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

}