This week I'm spending time working through David Black's Ruby for Rails book (hereinafter referred to as R4R) and helping Will Provost with his courseware. I'm working through the labs and demos in his Intro Java course, now that they've been ported to Java 5.
I'm okay with the enhanced for loop, and with variable arguments, and am getting used to enums. Generics are just plain ugly, and the inheritance aspect of them is very awkward. I thought I was going to really like generics, but now that I'm getting used to a dynamic typing language like Ruby, it all seems so unnecessary.
I really need to assemble a "Ruby Traps for Java Developers" page, though.