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diff --git a/sandbox/rfeng/helloworld-jsp-google-appengine/src/sample/appengine/HelloWorldServlet.java b/sandbox/rfeng/helloworld-jsp-google-appengine/src/sample/appengine/HelloWorldServlet.java
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+++ b/sandbox/rfeng/helloworld-jsp-google-appengine/src/sample/appengine/HelloWorldServlet.java
@@ -0,0 +1,51 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package sample.appengine;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import com.google.appengine.api.users.User;
+import com.google.appengine.api.users.UserService;
+import com.google.appengine.api.users.UserServiceFactory;
+
+@SuppressWarnings("serial")
+public class HelloWorldServlet extends HttpServlet {
+    public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {
+        resp.setContentType("text/html");
+        UserService userService = UserServiceFactory.getUserService();
+        User user = userService.getCurrentUser();
+        if (user == null) {
+            resp.sendRedirect(userService.createLoginURL(req.getRequestURI()));
+        } else {
+            PrintWriter pw = resp.getWriter();
+            pw.println("<html><head><title>Test</title></head><body>");
+            pw.println("<h1>");
+            pw.println("Welcome to the SCA Cloud hosted by Google App Engine: " + user);
+            if (user != null) {
+                pw.println("User ID: " + user.getUserId() + " E-mail: " + user.getEmail());
+            }
+            pw.println("</h1></body></html>");
+        }
+    }
+}