We all used to have those XML configurations which kinda OK, but might be out of sync during refactoring and in general look oldish and don’t allow you to reuse your great constants. Now our problems are solved with Spring’s feature which will allow you to have all your Spring configuration in code!
Check it out in this amazing article by Lucky Ryan:
http://www.luckyryan.com/2013/02/07/migrate-spring-mvc-servlet-xml-to-java-config/
Artem's Blog 