in 2004 I have passed the SCJP 1.4 exam and
I want to kwnow if i can to perform directly to SCJP 1.6 exam upgrade or
I must pass before to SCJP 1.5 exam upgrade and finally to upgrade SCJP 1.6 exam.
I have doubt because there are very differences between version 1.4 and 1.5 (tiger)
if we adds also the difference with the version 1.6 it seems strange that is sufficient only
the SCJP 1.6 upgrade exam.
Hovewer if you confirm me this you spur me to take the SCJP 1.6
Another question : which book is more suitable for to take the SCJP 1.6 upgrade exam ?
Note that the SCJP 1.6 upgrade exam does not only contain questions about the things that are new between 1.5 and 1.6 - you are expected to know all the new things in Java 1.5 too!
The K&B book for SCJP 6 is very well suited for the SCJP 6 exam (full exam or upgrade), and there are other books as well - see our SCJP FAQ.