I ran across a link to the DZone Refcardz in a JavaLobby newsletter last week. The idea of reference cards (think laminated cards of formulas for chemisty, physics, etc. that you see in stores) for some of our more commonly used Java tools sounded like a good idea so I went and took a look. I signed up without giving away too much personal info and requested all of the cards (4 total right now). I then got e-mails (one per card) that gave me a download link for the pdf.
With that said, the Spring Configuration refcard by Craig Walls is very good. Craig mostly covered the XML configuration and namespaces but also includes a section on the annotations related to these. The really important part is that these are all now in a single place, not broken up in the book or the user docs. There are 8-pages and the overall card is professionally done with good coloring and highlighting of the information. In the future, I’ll be using this as a reference aid in the Introduction to Spring course that I teach at CCCCD Continuing Education department.
My only problem (a very minor and personal one) is that they didn’t put page numbers on them anywhere. Usage of a refcard is best when it is right at hand and I’m old-school enough that I like some things on paper and while the layout of the information is pretty much self-contained by page; page numbers are easy enough to add.
UPDATE: The commenter’s are correct in that there are pages numbers. The just didn’t print for me due to printer settings.
So go take a look for yourselves.