In this section, we will go through the Elasticsearch Java client to perform the CRUD operations. To use a Java client of Elasticsearch, you can either build a Maven project (recommended) or simply add Elasticsearch jar files, which ship with the Elasticsearch installation file, into your project classpath.
You can include an Elasticsearch dependency in your Maven project by adding the following code to the project's
<dependency> <groupId>org.elasticsearch</groupId> <artifactId>elasticsearch</artifactId> <version>2.0.0</version> </dependency>
To connect with Elasticsearch using its transport client, you need to add the following imports:
import org.elasticsearch.client.Client; ...