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OCMJD 6 passed
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Howdy Ranchers!

I've just got info from the Oracle that I've passed the OCMJD 6. I would like to thank all you Ranchers who answered the questions and were very helpful: (alphabetic order, so no one should feel bad :-) Sorry if I missed someone!

Robert Benson
David Byron
Rob Camick
Roel De Nijs
Roberto Perillo
Rob Prime
Andy Schmid
Pete Stein
Raf Szczypiorski
Jason Then


Also thanks a lot for some archival questions authors and responders which saved me a lot of time!

Few basic information for future candidates.
I've registered for the task assignment (URLyBird 1.1.1) on 29.09.2010 and submitted it on 8.11.2010. I found OCMJD more fun and faster to prepare for than OCPJP. I have a part-time job as a Java developer (6 hours/day, 5 days a week) and have a girlfriend (which is quite relevant information when you consider how much free-time you have left ;-)

- I created two-tiers, three-layer architecture (GUI + BLL + DAO),
- used RMI instead of Sockets,
- GUI was quite simple but was prepared for long-time operations (progress bars, waiting cursor, etc.),
- GUI was just executing operations from the BLL (no logic in GUI so no locking at all, no lost-locks, etc.),
- BLL wasn't a singleton but it was thread-safe (because of RMI),
- DAO was a singleton class with all methods synchronized and thread-safe instantiation,
- I used a records cache which was loaded during application server startup and saved during shutdown (can be modified to create timer-based commits to prevent data loss during server crash),
- No 48-hours rule implemented,
- User-guide was in TXT format,
- Javadoc generated from the package level and all above ones,
- Javadoc provided for every field and method (even private ones, the only exception was popular implemented/overriden methods like Object.equals(-) or others)
- All unsure situations and even minor (but important from future developer point of view) decisions were documented in Javadoc and/or choices.txt
- Used Findbug to find some minor and few medium bugs before sending project to the assessor.
- Used Roel's Ant script for building end-jar and Roberto's deadlock test cases,

Some stats:

Size of choices.txt: 48,5 kB
Size of userguide.txt: 14,4 kB
Number of classes/interfaces: 41
Number of packages: 5
Number of code lines (with comments): 6717
Number of pure code lines: 2219

Once more - thanks a lot guys for your help! Couldn't made it without you!

Cheers!
Congratulations, champion!
Howdy, Pedro! That's great news, champ! Congrats for the achievement!!!

alphabetic order, so no one should feel bad :-)



That's fair!


alphabetic order...........



really big disadvantage at school if you're one of the first in the alphabet



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