Neu how can i create a url to a specific class and its function?

[Pankaj Kumar]

how can I create a specific class and its function?

 

[JulianG]

Sadly, at this time, we cannot provide you with any english JTL- Shop specific developer documentation or education. You can try google translate, but there will probably be mistakes: http://docs.jtl-shop.de/de/latest/index.html
If you could describe in much... much more detail, what you are actually trying to do, maybe then someone here could steer you in the right direction.