Google App Engine is one of the key technologies to emerge in recent years to help you build scalable web applications even if you have limited previous experience. If you are a Java programmer, this book offers you a Java approach to beginning Google App Engine. You will explore the runtime environment, front-end technologies like Google Web Toolkit, Adobe Flex, and the datastore behind App Engine. You'll also explore Java support on App Engine from end to end. The journey begins with a look at the Google Plugin for Eclipse and finishes with a working web application that uses Google Web Toolkit, Google Accounts, and Bigtable. Along the way, you'll dig deeply into the services that are available to access the datastore with a focus on Java Data Objects (JDO), JDOQL, and other aspects of Bigtable. With this solid foundation in place, you'll then be ready to tackle some of the more advanced topics like integration with other cloud platforms such as Salesforce.com and Google Wave. What you'll learn * How to get up and running with App Engine, starting with the Google Plugin for Eclipse * All about the development server for testing and developing your applications * How to develop applications using Servlets & JSPs, Spring Framework, and open source Flash Remoting and Messaging servers * How to leverage the datastore in your applications, including Persistence as a Service * How to use Spring as a Service for transactions, data access, and more * How to use Google Web Toolkit to create AJAX components to drive your web applications * How to send email and instant messages (XMPP) from within your application * How to increase performance of your apps by storing data in memory using the Memcache service Who this book is for This book is for Java programmers looking to get started on Google App Engine, as well as App Engine programmers looking to move to Java. Table of Contents * Beginning Google App Engine for Java * Introduction to App Engine * Getting Started with Google App Engine for Java * Servlet Container and Frameworks * Developing Your Application * Authenticating Users * Using the App Engine Datastore * App Engine Services * Administration and Integration