The Problem
I wanted to try out if it is possible to create a SOAP Webservice without an dependencies to third party libraries. Well ... it is (at least with Java 8)
The Solution
The solution can be found on my github repository: https://github.com/bytebang/simpleSoapWebservice
It contains two classes, where the Server.java creates a so called Endpoint that publishes the Functions of the Calculator.java via SOAP.
Happy Coding !