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Editorial Team
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Asked: 2026-06-13T16:49:27+00:00

I have tried using play 1.2.3 & 1.2.5 with the same code that was

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I have tried using play 1.2.3 & 1.2.5 with the same code that was working on play 1.2.3 at a previous installation of ubuntu (using JDK7). Now, I am getting class cast exceptions in my code (both with classes I wrote and third party libraries). Should I switch to JDK6 or try something else? I have already ran play clean (and the tmp directory was removed) but the issue is still outstanding. I am using Sun JDK 7.

Update: I reverted to JDK 6 but the class cast exceptions are still there (I used play clean as well – not sure if I am missing any further steps). I have tried the application.conf with and without the 1.6 JDK reference.

Thank in advance.

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1 Answer

  1. Editorial Team

    It was a classloader/multiple JDK issue – Eclipse was referencing JDK7 while I had switched over to JDK6 on the OS (without removing JDK 7). Ensuring that eclipse (IDE) was referencing the default JDK (v6) fixed the issue. Hope this helps others.

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