JAX-WS client: JAXB required?

Question

I need to "dive into JAX-WS programming".

So, I played around with Netbeans, after 20 or so erroneous attempts, finally managed to let a web service client execute a web service.

I noticed, that a lot of code is generated, especially JAXB classes for the web service response.

My current task is, to write a web service and web client completely by hand.

Is JAXB required at all? Is is part of the standard anyway? What would happen without it?

EDIT:
Seems that the answer is given here

Answer 1

您可以看到使用Java 2平台企业版（J2EE）1.4平台开发Web服务。

Answer 2

I took a wsdl and used eclipse to generate the service, serviceLocator, ws interface, ws binding stub, ws proxy, and then the client code. I added a main method and was able to hit the webservice successfully.

I used this tutorial as a guide with the url below and no, there are no jaxb objects as I'm not pulling any objects back in the simple example I used. I was just hitting some methods that pulled back a boolean value.

http://px.pats.no/px/Eclipse_tutorial.html