I'm developing a GIS application with java Srping 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. Help me please.
Anyone can give me a reference?