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Editorial Team
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Asked: 2026-06-15T13:15:23+00:00

I have an google-app-engine project that use javafx. I have installed the google plugin

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I have an google-app-engine project that use javafx.
I have installed the google plugin for eclipse and was using this versions of libraries :
appengine library -1.7.3
java jdk-1.7.0_01

when i was running locally everything runs great, but when i deploy i got this error from the app engine log :java.lang.UnsupportedClassVersionError: com/myproj/MyServlet : Unsupported major.minor version 51.0

i know what does it means , that my local compile is on a newest version then the appengine that why the app engine jre crushes.

what i cannot get is why for g-o-d is the current version of the google jdk?
Which version do you use, cause i must use 1.7 for other libraries in my project

the google app engine documentation site is really not updated 🙁

thanks in advance

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1 Answer

  1. Editorial Team

    App Engine uses JDK 6 in production as of 1.7.3. While future support for JDK 7 has been announced, currently it’s only supported locally.

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