wms - Can I use "Web Map Service Module" and "Web Feature Service Module" of Geoserver in my project?

I'm developing a GIS application with java Spring Framework and GeoTools library. I have some vector layer. I want to get this layers with wms and wfs protocols.
I've downloaded geoserver code. It includes module as bellow:

• Main Module


• Core Platform Module


• Web Map Service Module


• Web Feature Service Module


• and etc.

Can I use Web Map Service Module and Web Feature Service Module of Geoserver in my project?
If yes, How?
I want a sample code to use these modules apart from geoserver. Help me please.