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diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/servlet/ShowQuoteServlet.java b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/servlet/ShowQuoteServlet.java
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+++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/servlet/ShowQuoteServlet.java
@@ -0,0 +1,200 @@
+package examples.shop.web.servlet;

+

+import java.io.IOException;

+import java.util.Enumeration;

+import java.util.List;

+

+import javax.naming.Context;

+import javax.naming.InitialContext;

+import javax.naming.NamingException;

+import javax.servlet.ServletConfig;

+import javax.servlet.ServletException;

+import javax.servlet.http.HttpServlet;

+import javax.servlet.http.HttpServletRequest;

+import javax.servlet.http.HttpServletResponse;

+import javax.servlet.http.HttpSession;

+

+import examples.shop.impl.entity.LineItem;

+import examples.shop.logic.Cart;

+import examples.shop.logic.Pricer;

+

+/**

+ * This servlet allows the user to view and modify his current selections.

+ * 

+ * By the time this servlet is called, the user has logged in (via the Login

+ * servlet), and has a shopping cart started (i.e. cart bean). Since this

+ * servlet is pooled and re-used for different user requests, the servlet code

+ * does not store any information specific to any user. Rather, we store a

+ * reference to the user's cart in the user's HttpSession object, which is

+ * globally accessible to all servlets.

+ */

+public class ShowQuoteServlet extends HttpServlet {

+

+    // Pricer for pricing the cart

+    private Pricer pricer;

+

+    /**

+     * The servlet engine calls this method once to initialize a servlet

+     * instance.

+     * 

+     * In the body of this method, we need to acquire a Pricer EJB Object for

+     * pricing the carts.

+     */

+    public void init(ServletConfig config) throws ServletException {

+        /*

+         * Call parent to store the config object, so that getServletConfig()

+         * can return it.

+         */

+        super.init(config);

+        try {

+            Context ctx = new InitialContext();

+            pricer = (Pricer)ctx.lookup(Pricer.class.getName());

+        } catch (NamingException e) {

+            e.printStackTrace();

+        }        

+    }

+

+    /**

+     * The servlet engine calls this method when the user's desktop browser

+     * sends an HTTP GET request.

+     */

+    public void service(HttpServletRequest request, HttpServletResponse response)

+            throws ServletException, IOException {

+        /*

+         * Get the user's HttpSession, and from that get the user's current

+         * cart.

+         */

+        HttpSession session = request.getSession(false);

+        if (session == null) {

+            /*

+             * Redirect user to login page if no session

+             */

+            response.sendRedirect(response.encodeRedirectURL("/jasmine/login"));

+            return;

+        }

+

+        Object obj = session.getAttribute("cart");

+        if (obj == null) {

+            /*

+             * Redirect user to login page if no session

+             */

+            response.sendRedirect(response.encodeRedirectURL("/jasmine/login"));

+            return;

+        }

+

+        Cart cart = (Cart) obj;

+

+        /*

+         * If the user clicked the 'Order' button, he wants to purchase his

+         * selections. We forward the user to the servlet that handles

+         * purchasing.

+         */

+        if (request.getParameter("Order") != null) {

+            /*

+             * First, turn the cart into an order

+             */

+            String orderId = cart.purchase();

+            /*

+             * Stick the orderID in the request so the JSP gets it

+             */

+            request.setAttribute("orderID", orderId);

+            cart.clear();

+            this.getServletContext().getRequestDispatcher("/receipt.jsp")

+                    .forward(request, response);

+            return;

+        }

+

+        /*

+         * Next, we need to figure out what button the user clicked, if any.

+         * These come to us as form parameters. We need to loop through each

+         * parameter and interpret it.

+         */

+        Enumeration paramNames = request.getParameterNames();

+        while (paramNames.hasMoreElements()) {

+            String paramName = (String) paramNames.nextElement();

+            String paramValue = request.getParameter(paramName);

+

+            /*

+             * If user clicked 'Update' button, then the user wants to change

+             * the quantities of each product he is ordering. We'll process

+             * those quantities below.

+             */

+            if (paramName.equals("Update")) {

+            } else if (paramName.equals("Clear")) {

+                /*

+                 * The user wants to clear the form

+                 */

+                cart.clear();

+                this.getServletContext()

+                        .getRequestDispatcher("/clearQuote.jsp").forward(

+                                request, response);

+                return;

+            } else {

+                /*

+                 * If the parameter represents a quantity of a particular

+                 * product the user is interested in, then we should update that

+                 * product's quantity to reflect this new value.

+                 */

+                try {

+                    /*

+                     * Convert the quantity to int format, and set the new

+                     * quantity

+                     */

+                    int quantity = Integer.parseInt(paramValue);

+                    cart.modify(paramName, quantity);

+                } catch (NumberFormatException e) {

+                    throw new ServletException("Bad parameter to servlet: "

+                            + paramName + ", " + paramValue);

+                } catch (Exception e) {

+                    throw new ServletException(e.toString());

+                }

+            }

+        }

+

+        /*

+         * Recalculate all totals based upon new quantities

+         */

+        try {

+            cart.setSubtotal(pricer.priceSubtotal(cart.getOwner(), cart.getAll()));

+            cart.setTaxes(pricer.priceTaxes(cart.getSubtotal()));

+        } catch (Exception e) {

+            log(e);

+            throw new ServletException(e.toString());

+        }

+

+        /*

+         * Otherwise, show the current cart again

+         */

+        List<LineItem> lineItems = cart.getAll();

+        if (lineItems.size() > 0) {

+            /*

+             * Stick lineitems, subtotal, taxes and total in request

+             */

+            request.setAttribute("lineItems", lineItems);

+            request.setAttribute("subTotal", new Double(cart.getSubtotal()));

+            request.setAttribute("taxes", new Double(cart.getTaxes()));

+            request.setAttribute("taxRate", new Double(pricer.getTaxRate()));

+            request.setAttribute("total", new Double(cart.getTotalPrice()));

+            // Forwards the request to the showQuote JSP.

+            this.getServletContext().getRequestDispatcher("/showQuote.jsp")

+                    .forward(request, response);

+            return;

+        } else {

+            /*

+             * If there are no products, print out that the cart is empty.

+             */

+            this.getServletContext().getRequestDispatcher("/emptyQuote.jsp")

+                    .forward(request, response);

+            return;

+        }

+    }

+

+    private void log(Exception e) {

+        e.printStackTrace();

+    }

+

+    public String getServletInfo() {

+        return "The ShowQuote servlet returns information about"

+                + "the products that the user is in the process of ordering.";

+    }

+}