# ES Transport client 5.4 in java 1.7

**URL:** <https://discuss.elastic.co/t/es-transport-client-5-4-in-java-1-7/88318>\
**Category:** Elasticsearch\
**Created:** [June 5, 2017, 6:46pm UTC](https://discuss.elastic.co/t/es-transport-client-5-4-in-java-1-7/88318 "2017-06-05T18:46:30Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Yogesh\_BG](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/yogesh_bg/32/70018_2.png) [@Yogesh\_BG](https://discuss.elastic.co/u/Yogesh_BG)\
**Post date:** [June 5, 2017, 6:46pm UTC](https://discuss.elastic.co/t/es-transport-client-5-4-in-java-1-7/88318/1 "2017-06-05T18:46:30Z")

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Hi

I am running ES master and data nodes in 1.8. And i have project where i use java client i.e., transport client. But it runs on the java 1.7. I am getting the exception

2017-06-03 00:38:09.151 o.a.s.d.worker [ERROR] Error on initialization of server mk-workerjava.lang.UnsupportedClassVersionError: org/elasticsearch/index/query/QueryBuilder : Unsupported major.minor version 52.0

Is it strict that client also should be in 1.8? or is there a way to use 1.7. Because my project upgrading to 1.8 is a huge and critical task for us and we require it to be in 1.7. Can anybody give suggestions.

```
 <dependency>
            <groupId>org.elasticsearch</groupId>
            <artifactId>elasticsearch</artifactId>
            <version>5.4.0</version>
        </dependency>
        <dependency>
		<groupId>org.elasticsearch.client</groupId>
			<artifactId>transport</artifactId>
			<version>5.4.0</version>
		</dependency>
```

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<div class="post-metadata">

**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\
**Post date:** [June 5, 2017, 7:11pm UTC](https://discuss.elastic.co/t/es-transport-client-5-4-in-java-1-7/88318/2 "2017-06-05T19:11:19Z")

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Yes. You need to have a supported jvm version

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<div class="post-metadata">

**Author:** ![Yogesh\_BG](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/yogesh_bg/32/70018_2.png) [@Yogesh\_BG](https://discuss.elastic.co/u/Yogesh_BG)\
**Post date:** [June 5, 2017, 7:56pm UTC](https://discuss.elastic.co/t/es-transport-client-5-4-in-java-1-7/88318/3 "2017-06-05T19:56:35Z")

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Can't i run the transport client in java 1.7?

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<div class="post-metadata">

**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\
**Post date:** [June 6, 2017, 3:22am UTC](https://discuss.elastic.co/t/es-transport-client-5-4-in-java-1-7/88318/4 "2017-06-06T03:22:36Z")

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You can but only with old elasticsearch versions.  
2.4 should work IIRC

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 4, 2017, 3:22am UTC](https://discuss.elastic.co/t/es-transport-client-5-4-in-java-1-7/88318/5 "2017-07-04T03:22:57Z")

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