# Elasticsearch-2.3.5 maven build error with enforce-plugin (java home)

**URL:** <https://discuss.elastic.co/t/elasticsearch-2-3-5-maven-build-error-with-enforce-plugin-java-home/67188>\
**Category:** Elasticsearch\
**Created:** [November 25, 2016, 12:20pm UTC](https://discuss.elastic.co/t/elasticsearch-2-3-5-maven-build-error-with-enforce-plugin-java-home/67188 "2016-11-25T12:20:20Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![xavierfacq](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/xavierfacq/32/8744_2.png) [@xavierfacq](https://discuss.elastic.co/u/xavierfacq)\
**Post date:** [November 25, 2016, 12:40pm UTC](https://discuss.elastic.co/t/elasticsearch-2-3-5-maven-build-error-with-enforce-plugin-java-home/67188/2 "2016-11-25T12:40:00Z")

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Hi,

In order to build a java project you need "javac" from JDK and not a JRE , do you have this:

```
ls -la /usr/lib/jvm/java-8-openjdk-amd64/bin/javac

```

Question: Why to you need to build the ES jar ?

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