IllegalStateException within method with Response paramether

Question

I wrote a simple class to test response reading entity method (if it works as I expect). But it didn\'t worked well.

When I launch my class I get following error at

Answer 1

There are two types of Responses, inbound and outbound, though they still use the same interface. Outbound is when you are sending a response from the server-side

Response response = Response.ok(entity).build();

Inbound is when you are receiving the response on the client-side.

Response response = webTarget.request().get();

The readEntity() method is disabled on the server-side outbound response because you don't need it. It's only used when you need to de-serialize the response from the response stream. But there is none when it's outbound.

If you want the entity on the outbound response, just use Response#getEntity()