Publisher review:The Engine allows developer to create web apps in standard Java code and run them on Google's scalable infrastructure.
The Java environment provides a Java 6 JVM, a Java Servlets interface, and support for standard interfaces to the App Engine scalable datastore and services, such as JDO, JPA, JavaMail, and JCache.
App Engine runs Java applications using the Java 6 virtual machine (JVM).
The App Engine SDK supports Java 5 and later, and the Java 6 JVM can use classes compiled with any version of the Java compiler up to Java 6.
App Engine uses the Java Servlet standard for web applications.
Google App Engine SDK for Java 1.9.9 is a script for Development Tools scripts design by Google Inc..
It runs on following operating system: Windows / Linux / Mac OS / BSD / Solaris and has as system requierments: Java 5 or higher
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developers
Requirements: Java 5 or higher
Operating system:Windows / Linux / Mac OS / BSD / Solaris
Google App Engine SDK for Java 1.9.9 script details 
