Too Long; Didn't Read
The OCP is Oracle Certified Professional Java SE 11 Developer exam. The exam is 90 minutes long and has 50 questions covering all topics from past exams, with a passing grade of 68%. Most of the questions can have several correct answers. You should also spend a lot of time taking mock exams, including tests by topics, imitation of a real exam, notes, etc. The answers will be at the end: "What will the following code print?" "How will the code print when run? "How do you know how to run the Java SE application?"