I am looking at this page http://www.oracle.com/technetwork/articles/javase/index-140168.html which is about JAXB architecture and most of the linked resources(like books.xml, example java code etc.,) are not available – they refer to the same very page there are referred from.
This is a very old document but this is the first hit given to be my google when I searched for JAXB and I think it is worth fixing this page.