# JAVA API and doco for Graph
**URL:** https://discuss.elastic.co/t/java-api-and-doco-for-graph/65926
**Category:** Elasticsearch
**Tags:** elastic-stack-graph
**Created:** [November 14, 2016, 2:37am UTC](https://discuss.elastic.co/t/java-api-and-doco-for-graph/65926 "2016-11-14T02:37:36Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@David\_she](https://discuss.elastic.co/u/David_she)
#### Post date: [November 14, 2016, 2:37am UTC](https://discuss.elastic.co/t/java-api-and-doco-for-graph/65926/1 "2016-11-14T02:37:36Z")
Hi,
I have trawled through the elastic site and google looking for
the Java API to use for ElasticSearch Graph. Also any sample code or doco would be ideal.
Appreciated
---
### Author:  [@Mark\_Harwood](https://discuss.elastic.co/u/Mark_Harwood)
#### Post date: [November 14, 2016, 10:36am UTC](https://discuss.elastic.co/t/java-api-and-doco-for-graph/65926/2 "2016-11-14T10:36:57Z")
Hi David,
Installing dependencies is as per the Watcher docs [1].
In addition (assuming 5.0) you will need the x-pack-5.0.0.jar on your classpath which is found in your plugins directory once you have installed x-pack[2].
Here is the "Hello World" example of Graph client code:
```
import java.net.InetAddress;
import java.util.Collection;
import org.elasticsearch.client.transport.TransportClient;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.transport.InetSocketTransportAddress;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.xpack.XPackClient;
import org.elasticsearch.xpack.client.PreBuiltXPackTransportClient;
import org.elasticsearch.xpack.graph.action.GraphExploreAction;
import org.elasticsearch.xpack.graph.action.GraphExploreRequestBuilder;
import org.elasticsearch.xpack.graph.action.GraphExploreResponse;
import org.elasticsearch.xpack.graph.action.Hop;
import org.elasticsearch.xpack.graph.action.Vertex;
public class GraphDemoClient {
public static void main(String[] args) throws Exception {
TransportClient client = new PreBuiltXPackTransportClient(Settings.EMPTY)
.addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("localhost"), 9300));
XPackClient xpackClient = new XPackClient(client);
int requiredNumberOfSightings = 1;
GraphExploreRequestBuilder grb = new GraphExploreRequestBuilder(client, GraphExploreAction.INSTANCE).setIndices("meetuprsvps");
Hop hop1 = grb.createNextHop(QueryBuilders.termQuery("_all", "elasticsearch"));
// elasticsearch meetup attendees
hop1.addVertexRequest("member_id").size(10).minDocCount(requiredNumberOfSightings);
// groups attended by elastic attendees
grb.createNextHop(null).addVertexRequest("group_id").size(10).minDocCount(requiredNumberOfSightings);
GraphExploreResponse response = grb.get();
Collection vertices = response.getVertices();
System.out.println("==Members===");
for (Vertex vertex : vertices) {
if (vertex.getField().equals("member_id")) {
System.out.println(vertex.getTerm());
}
}
System.out.println("==Groups===");
for (Vertex vertex : vertices) {
if (vertex.getField().equals("group_id")) {
System.out.println(vertex.getTerm());
}
}
client.close();
}
}
```
To run this I found I also needed runtime dependencies of log4j and the netty artefacts in the "modules" directory of my elasticsearch installation.
Hope this helps
Mark
[1] [https://www.elastic.co/guide/en/x-pack/current/api-java.html](https://www.elastic.co/guide/en/x-pack/current/api-java.html)
[2] [https://www.elastic.co/guide/en/x-pack/current/installing-xpack.html](https://www.elastic.co/guide/en/x-pack/current/installing-xpack.html)
---
### Author:  [@David\_she](https://discuss.elastic.co/u/David_she)
#### Post date: [November 14, 2016, 7:36pm UTC](https://discuss.elastic.co/t/java-api-and-doco-for-graph/65926/3 "2016-11-14T19:36:28Z")
Cheers
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [December 12, 2016, 7:36pm UTC](https://discuss.elastic.co/t/java-api-and-doco-for-graph/65926/4 "2016-12-12T19:36:28Z")
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