Maybe you are updating your Oracle Professional Certification from Java 7 to Java 8 as I just did a few days ago.
This summary contains everything important to learn to achive this goal.
You can download this summary as a PDF document.
I wish you good luck!
Of course that this summary it's not enought, if you are beginning to learn all the new stuff in the Java 8.
For deeper study I can recoment you a few things:
- OCP: Oracle Certified Professional Java SE 8 Programmer II Study Guide: Exam 1Z0-809
- Mock Exams from Enthuware
- Pu-erh Dark Tea - good for the memory and whole body fitness
If you find some mistakes or have some comments to the summary, please feel free to discuss!