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Preparing for 1Z0-808 - Need challenging problems to study/solve

 
Ray Kolbe
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Howdy all,

As I continue my journey in preparing for 1Z0-808 I find that I do my best learning when solving challenging problems. It helps me see/study what I screwed up on and to avoid repeating it in the future.

I've studied (and continue to) Java A Beginner's Guide - 6th ed." (Schildt) and "OCA Oracle Certified Associate Java SE 8 Programmer I" (Boyarsky/Selikoff). I also frequent these forums while also creating my own problems and searching the internet for some as well as reading/studying Oracle's site (I've been through some of the tutorials and quizzes) and creating a large stack of my own flash cards that I use almost every day. I also have a large running file that I continually add expressions to that get printed to screen where I answer all questions at least once a week (I'm up to ~89 expressions; some easy, some hard)...something like:



So far I have taken the chapter review questions twice in Boyarsky/Selikoff and I have taken 2 of the 3 practice exams in the same book. I got a 60% on the first one (dumb mistakes on my part) and a ~68% (after adjusting my score based on the errata) -- so, not so great. I do have Enthuware sitting on my laptop but I don't want to start taking the mock exams until I am a bit more ready. Is this the right thing to do?

What I *think* I'm looking for are questions like these (these are created by me):

Assuming these classes are in the file Scratch.java, what is the output when compiled and run?



or

Assuming these classes are in the file Scratch.java, what is the output when compiled and run?



Does anyone know of or have a collection of questions like these? I don't *need* explanations to go with the problems since that is part of the fun in figuring out what the hell is going on 

I'd like to share my content too at some point if anyone would find it helpful. Here's are some examples of some early study material I used (again, created by me): https://gist.github.com/anonymous/5bf35d2599ef7f19c7fe and https://gist.github.com/anonymous/098294f20a3b5b27611f ; and https://twitter.com/raykolbe/status/701593044114518020 and https://twitter.com/raykolbe/status/752173164499656704

Any help is appreciated. Thanks!
 
Ray Kolbe
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I forgot to mention that I did check out https://coderanch.com/t/594049/ocajp/certification/OCA-study-materials already.
 
Julian West
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Ray Kolbe wrote: Is this the right thing to do?

I think so; it's what I've been doing.

Those were good exercises you posted.  Sneaky.
 
Ray Kolbe
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Julian West wrote:
Ray Kolbe wrote: Is this the right thing to do?

I think so; it's what I've been doing.

Those were good exercises you posted.  Sneaky.


If you're looking for more (or anyone else) this is my WIP. I have a ton of other questions I've come up with that have not made the list yet: https://gist.github.com/raykolbe/579bba00941ec16b3bce975679abbc8b
 
Julian West
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I'm not sure what you were trying to do with #6, the . operator on line 6
 
Ray Kolbe
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Julian West wrote:

I'm not sure what you were trying to do with #6, the . operator on line 6


Sorry about that. Looks like it was a copy/paste error on my part. I think I fixed it 
 
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