SessCounter.java: Count Session Access

package elug.servlets;

import java.io.PrintWriter;
import java.io.IOException;
import java.util.Enumeration;
import javax.servlet.*;
import javax.servlet.http.*;

public class SessCounter extends HttpServlet
{
  private static final String title = "Servlet Session Counter";
  private static final String textname = "text";
  private static final String countname = "counter";
  private void showPage (HttpServletRequest request,
                         HttpServletResponse response,
                         HttpSession session)
    throws ServletException, IOException
  {
    response.setContentType ("text/html");
    PrintWriter out = response.getWriter ();
    out.println ("<html>");
    out.println ("<head>");
    out.println ("<title>" + title + "</title>");
    out.println ("</head>");
    out.println ("<body>");
    out.println ("<h1>" + title + "</h1>");
    String text = (String) session.getAttribute (textname);
    Integer count = (Integer) session.getAttribute (countname);
    if (count == null)
      count = new Integer (0);
    out.println ("Session = <code>" + session.getId () + "</code>");
    out.println ("<p>");
    String url = response.encodeURL (request.getRequestURI ());
    out.print ("<form method=post action=");
    out.print (url);
    out.println (">");
    out.print ("<input type=text name=");
    out.print (textname);
    if (text != null)
      {
        out.print (" value=\"");
        out.print (text);
        out.print ("\"");
      }
    out.println (">");
    out.println ("<input type=submit name=submit value=\"Save Text\">");
    out.println ("</form>");
    out.println ("<p>");
    out.println ("Count = <code>" + count + "</code>");
    out.println ("<p>");
    out.print ("<a href=");
    out.print (url);
    out.println (">Nochmal</a>");
    out.println ("</body>");
    out.println ("</html>");
  }
  public void doGet (HttpServletRequest request,
                     HttpServletResponse response)
    throws ServletException, IOException
  {
    HttpSession session = request.getSession ();
    showPage (request, response, session);
  }
  public void doPost (HttpServletRequest request,
                      HttpServletResponse response)
    throws ServletException, IOException
  {
    HttpSession session = request.getSession ();
    String text = request.getParameter (textname);
    if (text != null)
      session.setAttribute (textname, text);
    Integer count = (Integer) session.getAttribute (countname);
    if (count == null)
      count = new Integer (1);
    else
      count = new Integer (count.intValue () + 1);
    session.setAttribute (countname, count);
    showPage (request, response, session);
  }
}