Hi!
As in the previous reply, the service runs in a JavaVM of its own.
When you want to deploy it, you typically deploy it to a real server that contains a JAX-WS compliant web service stack, such as GlassFish.
It is also possible to deploy a JAX-WS web service to a
Tomcat instance in which, for instance, Metro (JAX-WS reference implementation) has been installed.
Best wishes!