What exactly is an HTTP Entity?

Question

Would someone please describe to me what exactly an HTTP entity is?

I am reading the HTTPClient documentation, but I do not really understand what t

Answer 1

As said in a comment by @hawkeye-parker, it looks like Entity has been deprecated. Make a search in this 2014 rfc, and you will see about XML entities and message body, but nothing about Http entity.

Nevertheless, HttpClient, but also JaxRS client, have a setEntity() and getEntity() method.

Considering the accepted answer, both libraries are wrong ! HttpClient.setEntity() won't remove previously set headers.