I passed the OCPJP 8 Upgrade exam with 99%. My preparation took nearly 3 months, which I took very seriously.
I used the following resources:
-
Java 8 In Action (This book is really useful, I recommend it for every candidate)
- Mikalai notes
- Enthuware mock exam software (it helped me a lot, just like earlier when I faced the OCAJP7 and OCPJP7 exams)
- Oraclestudy (It helped me a lot)