By Adriaan de Jonge
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Extra resources for Essential App Engine: Building High-Performance Java Apps with Google App Engine
At this point, you have minimal overhead to worry about. The only libraries you may want to clean up are the Java Persistence API (JPA) and Java Data Objects (JDO) libraries provided by default. Chapter 10, “Storing Data in the Datastore and Blobstore,” explains how to use the low-level APIs without the overhead of JPA or JDO. The Eclipse plugin does not like it if you throw out its libraries, though. This may not be the first thing to worry about when you start developing for the App Engine. You can throw them out later when you start deploying a really clean web application from the command line.
In addition, you can start each of the versions separately without switching the default entry. 16 shows the Hello World application configured as version 2. 16 Adding the missing configuration details. After saving the configuration parameters, you return to the deployment dialog. You can click the Deploy button now! 17 Checking that the configuration is now ready for deploying the application. After you click the Deploy button, Google wants to authenticate you as the owner of the App Engine instance.
16 Adding the missing configuration details. After saving the configuration parameters, you return to the deployment dialog. You can click the Deploy button now! 17 Checking that the configuration is now ready for deploying the application. After you click the Deploy button, Google wants to authenticate you as the owner of the App Engine instance. 18, simply click Grant Access to proceed. 18 Granting access to deploy the application using your Google account. 13 14 Chapter 1 Setting Up a Development Environment After you finish deploying your application, you can return to your web browser and see if the application works.