Hi ahmad,
Congrats for passing OCPJP 6.
Unfortunately these 2 books are not enough to prepare for the 6-th versiono of the exam. You can check
here for more info.
If you want to prepare fof the new exam you have to study directly from the specifications - at least for the new material:
- annotations,
- web fragments
- asynchronous servlets/processing
- programmatic declarations
- pluggability
- extensions
Most of the people that are preparing for the new exam first learn from the FH Servlets and
JSP book and then refer to the Servlet 3.0 specification.
you can check these valuable threads:
1. here
2. Here
HTH