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Passed OCMJD6

Paweł Baczyński

Joined: Apr 18, 2013
Posts: 1584

Today I received an email telling me to check my score on Certview.
My assignmend was URLyBird 1.2.3.
I've got 377 points out of 400 so I am a member of the elite group of individuals who can call themselves a Java Standard Edition 6 Developer Certified Master .

- I used three layer architecture (data access layer, business layer and GUI layer).
- I used RMI for networking.
- I used thin client.
- I didn't delegate Data class responsibilities to otherclasses. Everything is in methods of Data class.
- Magic cookie generated by SecureRandom.
- I implemented my own SecurityException.
- I extended DBAccess interface to provide more useful methods.
- I used "AND approach" while searching. A value is returned when it matches ALL criteria.
- I didn't implement "OR search".
- I didn't throw DuplicateKeyException from createRecord method.
- I created a class BookingServiceFactory with three methods getLocalBookingService, getRemoteBookingService and getServerBookingService.
- I used a shutdown hook in server mode to save data when the application quits.
- I didn't use RMI factory.
- I didn't implement "48h rule".
- I used rmic to generate stubs.
- I used GridBagLayout extensively.
- I used SwingUtilities.invokeLater() and Thread.start() extensively.
- I decided not to change default look and feel.

I'd like to thank everyone who helped me write this assignment. Special thanks for Roberto Perillo for amazing paper and Data class test, Roel De Nijs for his help on this forum and Andrew Monkhouse and Terry Camerlengo for an amazing book.

OCPJP 6, 7, 8, OCMJD 6
Roberto Perillo

Joined: Dec 28, 2007
Posts: 2271

Alright champion, congratulations for the achievement! I'm really glad we were able to help!

Cheers, Bob "John Lennon" Perillo
SCJP, SCWCD, SCJD, SCBCD - Daileon: A Tool for Enabling Domain Annotations
Trieu Duong Nguyen

Joined: Nov 24, 2010
Posts: 18

really good score !

Trieu Duong Nguyen
Roel De Nijs

Joined: Jul 19, 2004
Posts: 8384

Congratulations champion! Great achievement! Now it's time to have a few and relax!

Glad to hear we were able to help

SCJA, SCJP (1.4 | 5.0 | 6.0), SCJD
Joe Harry
Ranch Hand

Joined: Sep 26, 2006
Posts: 10032


SCJP 1.4, SCWCD 1.4 - Hints for you, Certified Scrum Master
Did a rm -R / to find out that I lost my entire Linux installation!
I agree. Here's the link:
subject: Passed OCMJD6
It's not a secret anymore!