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Passed 819 - my thoughts

 
Greenhorn
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Hello, I am a junior java dev with less than a 1 year of experience. I passed 819 today with a score of 84%. I decided to share with that's on my mind, as that may be helpful to some.

I started learning 2 months ago from the Complete Study Guide. I took my time going through that book, spending a reasonable part of each weekend for learning.

Last week I have been studying at least 8 hours a day: 5 days ago I have started the OCP Practice Tests book, and 2 days ago I also started Enthuware tests. In total I think I spent somewhere around 100 hours to go through all the materials.
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Enthuware:
I had enough time to run only 9 Enthuware tests. The minimum score was 68%, maximum 85% and weighted average of all tests was 77%. I answered correctly only 1 out of total 13 Security questions, which is disturbing.

I felt like I was guessing way too much on the Enthuware tests. Overall, I believe the Enthuware questions sometimes are slightly more difficult than the below sources, but it was also easier to eliminate wrong answers.

OCP Practice Tests:
I ran only one out of three tests and got 86%.
I ran all the 13 chapters. My maximum score was 90% (modules) and minimum 56% (concurrency), IO (60%). Weighted average of all chapters was 79%.

Complete Study Guide:
Now this is something that I did not collect data for, however, my minimum score was below 50% and it was the Chapter 8. I rushed way too fast through this chapter, and this was the only chapter that I re-read. I think I initially had some real problems with understanding things like valid overrides, etc., and now after I took the time to re-understand the chapter, it is my strong point.

Other chapters were usually around 70%.

I decided to make some simple notes going through the book. Overall, I very much recommend this book. If you are very experienced, you can probably blast through the book looking just at the relevant code blocks with "// DOES NOT COMPILE" comments. If you feel super confident, you can perhaps skip the book and go straight to Enthuware. I think Enthuware is a must.
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I never wrote any code when studying, except for some command line for Modules. I kept my IDE opened though, as I often wanted to quickly look-up some method's header, and I prefer to do it in IDE rather than documentation.

I never ran out of time when doing the Enthuware tests. I decided not to skip any questions, because perhaps it'd be unlikely to later magically remember something that I never knew in the first place.

With that being said, I ran out of time on the exam itself. I had to skip and later guess to the three loop-related questions. I never had such a problem with loops before, but on the exam I think these were the most difficult and time consuming questions. Keeping in your head few variables' values... To put it in other words: my brain has like 16 KB of L1 cache memory, and I would need at least 32 KB to answer those questions. Or a piece of paper, which is not allowed on the remote exam. The whiteboard was allowed, but I decided not to use it, for some reason.

The exam had a lot of very straight forward questions, and some difficult ones. A lot of modules and arrays. I expected less questions on exceptions. And of course tons of OOP / Streams. Little to none of IO/NIO (which I think is the most difficult topic), Security, JDBC, Localization. Some Concurrency. Question with FileChannel showed up. Also, a lot of OCA-alike questions related to performing operations on numbers.

I recommend learning in-depth how classes/interfaces work (overriding, overloading, allowed modifies, etc.), this is probably the most important skill and should be your fundamental. Then the Streams, functional interfaces, arrays, operations on numbers.

Good luck!


 
Bartender
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Congratulations and thank you for the feedback!
 
Enthuware Software Support
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Congratulations, Nani!
thank you for the feedback.
 
Greenhorn
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Congratulations Nani.

The exam had a lot of very straight forward questions, and some difficult ones. A lot of modules and arrays. I expected less questions on exceptions. And of course tons of OOP / Streams. Little to none of IO/NIO (which I think is the most difficult topic), Security, JDBC, Localization. Some Concurrency. Question with FileChannel showed up.



This was exactly my experience of the exam, taking it today as well. The only difference being there wasn't an awful lot of questions on Streams. There were questions that included them but didn't require deep knowledge of them. Only 2 that required working knowledge of them. Everything else though just the same.
 
Doody calls. I would really rather that it didn't. Comfort me wise and sterile tiny ad:
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