I just passed the OCPJP exam for
Java 8 with a 75% score which I am happy wih. :-)
Your study guide and Enthuware mock exams were incredibly helpful. I also used Ganesh's Expert's Voice Study Guide and Udayan Khattry's mock exams on Udemy as supplementary resources which also were useful.
I had the feeling that the topics of just about every question were covered in the study guide with maybe one or two exceptions (the only thing I'm absolutely certain about was the use of a forEach method on a Map, there also was a question in which I checked an answer with the volatile keyword, but I'm not sure whether I answered that one correctly).