hi S javainn,
Welcome to javaranch. First of all there is a dedicated forum for SCJP here
SCJP FYI, Khalid's book is a good book for the SCJP. And you can even go through K&B. Khalids book gives tougher questions than real exam, so if you get a good score in khalids's final exam in cd(whizlabs) then you can go ahead and take exam next day. I did so and succeed.
Nikhil Kanjulli Menon
SCJP1.4 (95%)