Download the App Engine SDK for Java

There is a new version of the SDK available.
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Latest SDK:
Release: 1.9.55
Timestamp: Wed Aug 30 16:42:17 EDT 2017
API versions: [1.0]

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Your SDK:
Release: 1.9.34
Timestamp: Thu Feb 11 14:36:15 EST 2016
API versions: [1.0]

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Please visit https://developers.google.com/appengine/downloads for the latest SDK.