// From "Professional Java Server Programming", Patzer et al.,
// Edition J2EE, pg 410
// Import Servlet Libraries
import javax.servlet.*;
import javax.servlet.http.*;
// Import Java Libraries
import java.io.*;
import java.util.*;
public class Catalog extends HttpServlet
{
public void doGet (HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException
{
// Get session object
HttpSession session = req.getSession (true);
// Get item count
int itemCount = 0;
ArrayList cart = (ArrayList) session.getAttribute ("cart");
if (cart != null)
{
itemCount = cart.size ();
}
res.setContentType ("text/html");
PrintWriter out = res.getWriter ();
out.println ("");
out.println ("");
out.println (" Simple Shopping Cart Example");
out.println ("");
out.println ("");
out.println ("");
out.println ("");
out.println ("");
out.println ("");
out.println (" Simple Shopping Cart example
");
out.println (" pages 410--413 in \"Professional Java Server Programming\", edition J2EE.");
out.println ("");
out.println ("");
out.println ("
");
out.println ("");
out.println (" ");
out.println (" Programmers' Toy Shop
");
out.println (" ");
out.println ("
");
out.println (" You've got " + itemCount + " items in your cart.
");
out.println ("
");
out.println (" ");
out.println ("");
out.println ("");
out.println ("");
out.close();
}
}