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Passed the OCP11 (1Z0-819) with 91% score - feedback

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I passed today 1Z0-819 Exam with 91% score and I decided to share with my experience about the Java 11 OCP exam.
Many feedbacks from this forum helped me to prepare well, so maybe I can help somebody too.
I’ve been programming in Java for about 2 years.

I tried first time in April when there was an enormous discount. I had been learning for 3 weeks very intensive and I had 65%.
That was the motivation to prove myself that I can pass it.

I used the study book from Scott Selikoff and Jeanne Boyarsky which is for me necessary to pass the exam. I read some chapters few times.
OCP practise tests and Enthuware mock exams help to familiarize with the exam structure.  I think it is even more than enough to prepare well.
I did some notes, repeat the most difficult and important things and check my knowledge by tests. I tried always to understand the topic.
My total  preparation time was about 2 hours/day for a 3 months + 3 intensive weeks in April.

About the exam:
First two questions was difficult stream with mapping and filtering and also some complicated flow. It took few minutes to decide which answer is correct and made me
panic and stressful. Fortunately, questions from 10 to 50 questions were quicker (some of them like if java.base is a fundamental module was a gift) and I had about 30 minutes to come back to marked questions
and go through all the questions what helped me to see some mistakes (some of them were really obvious, but I was stressful). Most questions was about Java OOP and a lot of about streams.
Exam was a little bit easier than Enthuware tests. If you do a lot of tests, you can easily notice each 'tricky' thing. One questions was I think out of scope (probably excluded from the result).

I think I spent too much time for learning IO, NIO.2, Security and Concurrency. It was one or two questions about each topic, but I spent most of my learning time to be good at it.

I wish good luck to all of you!
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Thank you for your valuable feedback.

One thing to point out is that due to the nature of the changes in the exam from the 815/816 or 808/809, was an increase in the "Slot Machine Effect".

That is, the precise balance of questions that you got, in terms of topics, if I understand correctly, could be substantially different than that of others who took the test even the same day as you.

If everyone knows every topic equally well, that will tend to cancel out, but if you know certain topics very well and others less well, it could play up the effect of "luck" on your exam.

So if many test takers say "the mock exams had lots of stuff about X and Y, but I only saw one single question on them" it means something, but if one or two say it that only tells you something about their individual experience.

I may be wrong about this, but I believe it to be true about the 819 from what I have heard and read.

Welcome, belatedly to the Ranch!

Lastly, "Wow!"  You obviously knew everything quite well and have the Gift of Speed for sure, given the fact that you were reviewing your answers with half an hour left.  Also, it is hard for many people to recover from having a rough time right near the beginning, you clearly did a great job of "shaking that off!"
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Welcome to CodeRanch! Congrats and thank you for sharing your experience
You showed up just in time for the waffles! And this tiny ad:
Building a Better World in your Backyard by Paul Wheaton and Shawn Klassen-Koop
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