# Cannot use own java version in ES 8

**URL:** <https://discuss.elastic.co/t/cannot-use-own-java-version-in-es-8/317007>\
**Category:** Elasticsearch\
**Created:** [October 19, 2022, 1:16pm UTC](https://discuss.elastic.co/t/cannot-use-own-java-version-in-es-8/317007 "2022-10-19T13:16:19Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![surkovoleg2010](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/surkovoleg2010/32/112272_2.png) [@surkovoleg2010](https://discuss.elastic.co/u/surkovoleg2010)\
**Post date:** [October 19, 2022, 1:16pm UTC](https://discuss.elastic.co/t/cannot-use-own-java-version-in-es-8/317007/1 "2022-10-19T13:16:19Z")

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Hello, I have ES version 8.1.2 and have env var for ES\_JAVA\_HOME

 ![image](https://us1.discourse-cdn.com/elastic/original/3X/a/d/ad421ce8133972995594d4a2f388caf7ed1bb3f9.png)  
But anyway, when I start ES with systemctl start elasticsearch.service it uses bundled jdk.

I found a way how to start it with my own, using override.conf file:  
Environment=ES\_JAVA\_HOME=$(readlink -f /usr/bin/javac | sed "s:/bin/javac::")" \>\> /etc/systemd/system/elasticsearch.service.d/override.conf  
With these settings, it successfully starts with my own JDK.

Can you explain is this an issue?

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [November 16, 2022, 1:17pm UTC](https://discuss.elastic.co/t/cannot-use-own-java-version-in-es-8/317007/2 "2022-11-16T13:17:19Z")

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