Send feedback Home Docs Serverless Computing App Engine Documentation Standard Environment Java 8 Reference com.google.appengine.api (Google App Engine API for Java) com.google.appengine.api Interfaces LifecycleManager.ShutdownHook Classes LifecycleManager NamespaceManager ThreadManager Was this page helpful? Let us know how we did: Send feedback Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see our Site Policies. Java is a registered trademark of Oracle and/or its affiliates. Last updated November 25, 2019.