How to use parameters in publication extension?

Hi all,

I'm quite new to the SDK and Publication Extension topic, so please excuse the question of a complete newbie;)

I created a publication extension which converts the pdfs generated by the publication in bytestreams and passes them to a webservice running on another server. Currently the webservice address is hard-coded in my java code which is neither maintainable nor flexible

Now I found out that there is a possibility to pass parameters to the publication extension using the CMC, which would suit perfectly to pass the WebService-URL to the publication extension. However, I have no idea how to handle them in my java code. Does anyone of you have a very basic example of how I can access a parameter in java which was passed to the publication extension?

best regards and thanks!