How do I port from Cold Fusion (CFM) to servlets?

ColdFusion is a Proprietary system with its own markup tags for doing the server side processing. Servlets again have a completely different architecture and they have their own way of processing the server side logic. You may have to re-write the code entirely when you migrate to Servlets. I would suggest ColdFusion to JSP is more appropriate migration if your application has more presentation content rather than heavy application logic.

Regards,
Radhakrishnan