Some information missing from the ElasticSearch Java client documentation - e.g., what imports are needed and a pointer to some JavaDocs.

elastic-search-api-imports.md

Documenting ElasticSearch Java Client

The current API documentation for the ElasticSearch Java Client is woefully inadequate.

First of all, there is no JavaDoc. Luckily I found some at https://www.javadoc.io/doc/org.elasticsearch/elasticsearch/2.3.0

The tuorials don't provide any of the import statements, which makes it next to impossible to use.

For example, the TransportClient documentation contains the following code snippet:

// on startup

Client client = TransportClient.builder().build()
        .addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("host1"), 9300))
        .addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("host2"), 9300));

// on shutdown

client.close();

OK - so where do I find Client and TransportClientBuilder? Through trial-and-error, I found these worked for me to get that code to compile:

import org.elasticsearch.client.Client;
import org.elasticsearch.client.transport.TransportClient;
import org.elasticsearch.common.transport.InetSocketTransportAddress;

The GET API documentation is only one line:

GetResponse response = client.prepareGet("twitter", "tweet", "1").get();

But, where does GetResponse come from? Given the JavaDocs I found above, you can look it up, or here it is:

import org.elasticsearch.action.get.GetResponse;