The bottom line is that HF Java 2 is still, primarily a beginner's book. It definitely DOES NOT cover all the new Tiger features, because lots of Tiger is pretty advanced.
We really don't think it would be a very good value for someone to buy HF Java 2 if they already have H Java. And, as I discuss in the other thread, at this point I don't know of a single, great reference for all of the Tiger features.
But we kind of have a plan... we're going to ask our publisher if we could post a PDF of the collections chapter up on our site. While we enhanced several chapters in the Tiger book, if you had HF Java 1, and the collections chapter you'd be in pretty good shape.
We'll let you know if we can do that!
Spot false dilemmas now, ask me how!
(If you're not on the edge, you're taking up too much room.)