AI12345 (1) [Avatar] Offline

I bought the early access edition in April this year (2012), I have noticed there are still quite a few erros in the book, which is understandable.

However what im confused about is the examples int he book at times uses, mixed configuration, for instance the example in chapter 3, we create a bean for the Rorster controller define it in the xml and then we also annotate it with @Controller. Cant find an explanation as to why this is the case?

Im new to spring, so bare with please?