I've been using Java since JDK 1.0, but I still find myself referring to your book first when I'm about to start a new project involving some aspect of the language I've never used before.
My current (very dog-eared, very marked up!) copy is "Just Java 2: Fifth Edition".
"Just Java 2" is a superb introductory textbook; it's an equally superb reference book. I never hesitate to recommend it to friends and colleagues who are looking for a good book about Java programming.
Thank you for writing - and keeping fresh - an excellent book!