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Rafal Kawecki

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since Feb 08, 2011
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Eclipse IDE Java Ubuntu
Warsaw, Poland
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Recent posts by Rafal Kawecki

Hi all,

I have just got back from the cert center and I my score result is 95%.

Preparation:
  • mocks from http://enthuware.com/
  • Enterprise JavaBeans 3.1, 6th Edition
  • EJB 3.1 spec

  • 7 years ago
    I have just logged in to my Pearson VUE account and the score report is finally available.
    It says: 384/400 so it is not a bad result

    Thanks again to all of you!
    8 years ago
    Hi Ranchers,

    I received the official email today:

    Hi Rafal,
    Congratulations! You have passed the Oracle Certified Master, Java SE6 Developer certification. You are among the elite 1% of certified Java professionals who have gone on to achieve the Oracle Certified Master, Java SE6 Developer certification. You have received a passing score. Passing grades do not receive a score, just the pass. A failing grade will receive section level scoring so that a candidate may isolate the area of failure and resubmit their assignment. Numeric scores are only provided on failures.


    I would like to thank all of You because with this forum it was just a piece of cake.
    Special thanks to Roel De Nijs because he always answers any question and Roberto Perillo for both the tool I could use to read the .db file which was an excellent starting point and Demystifying the OCMJD Certification.

    More details here.

    Rafal Kawecki
    Oracle Certified Master, Java SE6 Developer
    8 years ago
    Hello,

    I wrote again to the developer-submit_US@oracle.com just to make sure I passed the exam.
    In the email I put all the information about both the CertView and Pearson VUE details (like TAKEN/PASS etc ... we wrote about earlier in this thread) and here is the answer I had received an hour ago:

    Our records indicate that you have passed and earned your Oracle Certified Master, Java Se6 Developer credentials. The formal results mail will be sent out in a day or two.



    Ten minutes later the following mail arrived:

    Hi Rafal,
    Congratulations! You have passed the Oracle Certified Master, Java SE6 Developer certification. You are among the elite 1% of certified Java professionals who have gone on to achieve the Oracle Certified Master, Java SE6 Developer certification. You have received a passing score. Passing grades do not receive a score, just the pass. A failing grade will receive section level scoring so that a candidate may isolate the area of failure and resubmit their assignment. Numeric scores are only provided on failures.



    It would be nice to know which part of my solution was the worst one but it does not have any influence on how happy I am.



    RK
    Hi

    I uploaded my assignment 10-AUG and took my essay exam 12-AUG.
    In the mean time I received an email that it could take longer than initially said(4-6 weeks) to grade it. 13 weeks ? It looks they got big mess in their papers.

    RK
    One more thing,

    I went to the Certification Status -> Success Kit Status and I can see the following:
  • 1st shipment 23-SEP-11 Oracle Certified Master, Java Se6 Developer, MY_ADDRESS
  • 23-SEP is one day after I received the GOOD NEWS ! email.

    Hm, so maybe it time for the celebration ?

    RK
    Hi guys,

    first of all thanks for the replies because I did not even know about sth like Oracle Certview (How could I miss that ?).

    I managed to login and my account has been successfully verified. I have the same situation: I went to the Certification Status and I can see the following information:
  • Java Standard Edition 6 Developer Certified Master Essay Exam (Step 2 of 2) - TAKEN
  • Java Standard Edition 6 Developer Certified Master Assignment(T1) - PASS

  • Hopefully an email with the confirmation will come soon ...

    RK

    Panagiotis Kalogeropoulos wrote:I believe we all have seen that after we finish the essay exam.

    Yep, exactly !
    Hi,

    same problem here (mail received last week). I wrote an email to both pearson vue and developer-submit_US@oracle.com and they responded that they "are checking on this ..."
    I am afraid the only thing we can do is just waiiting.

    RK
    The only difference is that I have the Windows Enterprise version.

    I am not an advanced Swing GUI programmer but this code seems to be ok. Besides the error does not seem to be harmful, is it generated after all my operations are finished. Anyway, thanks for your help.
    Rafal
    8 years ago
    Dispose desc in Java 6 API says:

    public void dispose()
    Releases all of the native screen resources used by this Window, its subcomponents, and all of its owned children. ...


    So i updated the code to:but still the same issue.
    8 years ago

    Rob Spoor wrote:First of all, it's Event Dispatcher Thread, not Event Driver Thread.

    Sorry, my mistake. I have no idea why I wrote Driver

    Rob Spoor wrote:It looks like there's some event still in the event queue. I'm not sure why; perhaps the setVisible(false) after the call to dispose(). It's unnecessary, as dispose() will already hide the dialog, so what happens if you remove this statement?

    The same Exception was thrown.

    Rob Spoor wrote:If that doesn't solve the problem, what steps do you need to take to reproduce it? Because I tried to get that error but no such luck. My steps:
    - launch the application
    - click the button
    - select a file
    - press OK in the JFileChooser
    - either press OK in the main dialog or close it using the X

    That is exactly what you need to do. That does not matter if you use X or OK.

    Which OS do you use ? How many times did you try to run the app ?

    Thanks
    Rafal
    8 years ago
    Hi all,

    I've been working lately on a Swing application. I created a simple generic form-like JDialog (Label - Input Text; ...; Lable - Input Text; Submit).
    I devolope mainly on Ubuntu with Sun JDK 1.6 u24.

    No issues have been identified but few days ago I compiled and run this app on Windows 7, with exactly the same java version and a problem occured.
    Additional functionality is that the form allows user to choose a file. User clicks a JButton and a JFileChooser shows up. When OK is chosen absolute file path is displayed in a JTextField. Everything takes place in Event Driven Thread.

    I implemented a Window Closing listener to dispose a main JFrame (and the form-like JDialog) and call System.exit(0). When the app is closed occasionaly the following exception is thrown by Java 2D Disposer thread (which seems to be some intenral mechanism):
    This happens only when using JFileChooser. If there are only JLables and JTextFieldeverything works fine.
    As a temp solution I advise System to run the GC and it works as well.

    I tried to run jvisualvm to idetify all threads and objects but everytime I create a dump the problem does not occur.

    I created a simple app which generates the Exception with similar frequency as my main app:


    I googled a little but this issue does not seem to be popular.
    I had upgraded Java version to the latest release u26 but it didn't change anything.

    Can any of you please try to run this code and check if it happens ?

    Thanks in advance
    Rafal
    8 years ago

    Jonathan Elkharrat wrote:
    synchonizing the whole method make the lock/unlock useless.


    I agree in 100%, my big big mistake. Thanks for pointing that out.

    Jonathan Elkharrat wrote:
    so if you are afraid the record would be booked between the read and locking, how can you assure this record (and only this,
    making the whole method synchronized will block the whole database) is not modified?


    I can lock it first