# Clover Engine 4.0.4 and java version

**URL:** https://forum.cloverdx.com/t/clover-engine-4-0-4-and-java-version/1599
**Category:** CloverDX Platform
**Created:** [March 12, 2015, 12:00am UTC](https://forum.cloverdx.com/t/clover-engine-4-0-4-and-java-version/1599 "2015-03-12T00:00:00Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![anweston](https://avatars.discourse-cdn.com/v4/letter/a/7c8e57/32.png) [@anweston](https://forum.cloverdx.com/u/anweston)
#### Post date: [March 12, 2015, 12:00am UTC](https://forum.cloverdx.com/t/clover-engine-4-0-4-and-java-version/1599/1 "2015-03-12T00:00:00Z")

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Heya,

We’re starting to look into upgrading our clover engine from 3.4.0 to 4.0.\* and I had a quick question. The readme.txt in the zip says that Java 1.6 is required, but I seem to recall reading that 4.0 required Java 1.7? Is this true? Also, do you have a reccomendation for 32 vs 64 bit?

Thanks,  
Anna

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### Author: ![imriskal](https://avatars.discourse-cdn.com/v4/letter/i/b38774/32.png) [@imriskal](https://forum.cloverdx.com/u/imriskal)
#### Post date: [March 13, 2015, 10:18am UTC](https://forum.cloverdx.com/t/clover-engine-4-0-4-and-java-version/1599/2 "2015-03-13T10:18:21Z")

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Hi Anna,

You are of course correct, Java 7 is required. I have started a new issue in our bug tracker to update this information in readme.txt, see [https://bug.javlin.eu/browse/CLO-5889](https://bug.javlin.eu/browse/CLO-5889)

Regarding 32bit/64bit, both versions are supported. The preferred type is Oracle JDK.

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### Author: ![anweston](https://avatars.discourse-cdn.com/v4/letter/a/7c8e57/32.png) [@anweston](https://forum.cloverdx.com/u/anweston)
#### Post date: [March 17, 2015, 5:12pm UTC](https://forum.cloverdx.com/t/clover-engine-4-0-4-and-java-version/1599/3 "2015-03-17T17:12:18Z")

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Heya,

Thank you for the reply - good to know I read that right. One more question: you say that you support both 32- and 64-bit, but I assume the release on SourceForge is 32-bit? Are we expected to compile it ourselves with the source distribution if we want 64-bit?

Thanks,  
Anna

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### Author: ![imriskal](https://avatars.discourse-cdn.com/v4/letter/i/b38774/32.png) [@imriskal](https://forum.cloverdx.com/u/imriskal)
#### Post date: [March 18, 2015, 8:05am UTC](https://forum.cloverdx.com/t/clover-engine-4-0-4-and-java-version/1599/4 "2015-03-18T08:05:21Z")

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The SourceForge release is universal, it depends on the Java used. If you want 64-bit, just use 64-bit JDK.

Regards,