I know of three books.
The Sun Certified
Java Developer Exam with J2SE 1.4 by Mehran Habibi et al
The Sun Certified Programmer & Developer for Java 2 by Kathy Sierra and Bert Bates
Also a similar
SCJP &
SCJD for Java 2 by Simon Roberts & Philip Heller.Missed one name .. it is
The Complete Java 2 Certification Study Guide by Simon Roberts, Philip Heller and Michael Ernest.
They are all highly-rated . You may find more information on the Book Reviews section.
regards
[ June 05, 2003: Message edited by: HS Thomas ]