# Required java version for elasticsearch 5.6 java API?

**URL:** <https://discuss.elastic.co/t/required-java-version-for-elasticsearch-5-6-java-api/158541>\
**Category:** Elasticsearch\
**Created:** [November 28, 2018, 10:35am UTC](https://discuss.elastic.co/t/required-java-version-for-elasticsearch-5-6-java-api/158541 "2018-11-28T10:35:02Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![hym](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/hym/32/22399_2.png) [@hym](https://discuss.elastic.co/u/hym)\
**Post date:** [November 28, 2018, 10:35am UTC](https://discuss.elastic.co/t/required-java-version-for-elasticsearch-5-6-java-api/158541/1 "2018-11-28T10:35:02Z")

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Hi all,

I have a problem with java version (7) using elasticsearch 5.6.7

```auto
Caused by: java.lang.UnsupportedClassVersionError: org/elasticsearch/index/query/QueryBuilder : Unsupported major.minor version 52.0 (unable to load class org.elasticsearch.index.query.QueryBuilder)

```

is there anyway to use this version (5.6.7) of elasticsearch with Java 7?

Thanks in advance

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<div class="post-metadata">

**Author:** ![stromblom](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/stromblom/32/38180_2.png) [@stromblom](https://discuss.elastic.co/u/stromblom)\
**Post date:** [November 28, 2018, 10:36am UTC](https://discuss.elastic.co/t/required-java-version-for-elasticsearch-5-6-java-api/158541/2 "2018-11-28T10:36:11Z")

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Hello,

Elastic requires Java 8 (1.8.0\_131 or later):  
[https://www.elastic.co/guide/en/elasticsearch/reference/5.6/setup.html](https://www.elastic.co/guide/en/elasticsearch/reference/5.6/setup.html)

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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:** [December 26, 2018, 10:36am UTC](https://discuss.elastic.co/t/required-java-version-for-elasticsearch-5-6-java-api/158541/3 "2018-12-26T10:36:16Z")

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