After a few years of on and off studying with 2 editions of the K&B book (which both are fantastic resources) I spent a few weeks brushing up on everything and made it half way through the Head First Java book, and decided to go for my test and passed with an 84%!
Now if only the certmanager site will recognize my results, or someone returns one of the emails I've sent on the topic..?
Certmanager site will update your status automatically in couple of business days, then shipping of certification kit (certificate, pin, card) will be scheduled automatically. You should receive package with certification kit within 1 month.
Exam 1Z0-817: Upgrade OCP Java 6, 7 and 8 to Java SE 11 Developer Study Guide and Quiz