o my god , the god make joke to me , i remenber to put es pom . only pu es hitght client pom , so , i process can't never run in ayning time . but's our official doc just tell us how to quite use hight client , forget decencency basic es pom , like this
<dependency>
<groupId>org.elasticsearch</groupId>
<artifactId>elasticsearch</artifactId>
<version>6.8.6</version>
</dependency>
<dependency>
<groupId>org.elasticsearch.client</groupId>
<artifactId>elasticsearch-rest-high-level-client</artifactId>
<!-- <version>7.0.1</version>-->
<version>6.8.6</version>
</dependency>
official doc url
page do not show :Maven Repository | Java REST Client [7.12] | Elastic
<dependency>
<groupId>org.elasticsearch</groupId>
<artifactId>elasticsearch</artifactId>
<version>6.8.6</version>
</dependency>
so , i suggest deppend elasticsearch version in to the official doc , not olny can remove doubts people question in mind , but also can quik start how to use without anying probleam ,At least for tiro,like me . 