Thank you for the precious help and for this awesome forum .
Unfortunately seems they are no longer providing the score summary , if you pass, not even a mark, so i can not say what was right or wrong on what i did, their only feedback beeing: "Congratulations! You have passed the Oracle Certified Master, Java SE6 Developer certification.".
For URLyBird(lock cookie version), I did this:
- GUI (opening an editing window for a selected accommodation entry), no tips, not anything else but what was required(this was not my favorite part ).
- Sockets chosen, with client locking multiple records prevention and with catching disconnecting client.
- All database layer using arrays, all GUI using Accommodation business objects. So, a business layer for conversion between the two types.
- Locking with a simple static counter retrieved as lock cookie, calls made on client side.
For me, next comes a vacation and after that about about 3 months of chilling out and then maybe the architect exam, or some pl/sql development certification, don't know, depends on the inspiration and mood in that moment .