I used nsjk2 and got tomcat working within AS4, but the installation was painful and unfortunately not documented. I never used nsjk2 to call tcl API from within Java, but simply to run existing apps within AS4.<p>
I used soap-gateway in several projects, both providing web services from OpenACS and accessing third party services via some client tcl procs.<br>Actually these client procs are not well engineered and I had to hack them to deal with different web services. <p>I have no time now, but I think that, without resorting to java, it could be possible to exploit the much better engineered client procs of tclsoap.
