You can use the Java client in multiple ways:
Obtaining an Elasticsearch
Client is simple. The most common way to
get a client is by creating a
that connects to a cluster.
The client must have the same major version (e.g.
5.x) as the
nodes in the cluster. Clients may connect to clusters which have a different
minor version (e.g.
2.3.x) but it is possible that new functionality may not
be supported. Ideally, the client should have the same version as the