I am new to the Java Ranch,working as a Java/J2EE developer in Omaha. I recently took my SCJP 1.4 Certification with Kathy and Bert's Book for SCJP 1.4. I passed with a 95%. I am thinking of upgrading to Java 1.5, and I have bought the K & B book again for SCJP 1.5. But I am planning to take only the upgrade Exam. How do I efficently use Kathy and Bert's book for 1.5 to tackle the Upgrade Exam. The book is for the full SCJP 1.5 Exam. Whats the big difference between the 1.4 and Upgrade Exam? Do I still have to read the full SCJP 1.5 book or is it o.k..to concentrate on parts of it for the Upgrade Exam? Does the Upgrade Exam concentrate on 1.5 stuff more than the 1.4 stuff? I will greatly appreciate it if any of you can clear my questions.Thanks a lot.