there is also this book which may be useful for getting certified.
Java 2 Exam Cram, Exam Cram Ser. by Brogdon, Bill
This small book is really a good book which has all the important points to know for the SCJP2 Exam in a concentrated form. I used this book as a supplement to R&H book.
ans also check this link which is very useful:
www.javaranch.com/maha