J2ME Interview Questions-Please share your ideas.It's Useful for everyone.

Hi friends,
Recently, I attended J2ME interview. I could answer the basic questions but for few questions, I was doubtful. I�ve listed the few tough questions. Please share your ideas for
these questions. Hope it will be useful for everyone.
Questions:
Which mobile operating system did you use?
What do you mean by porting of applications?
If a MIDP application runs in an emulator then, is there guarantee that
It will work fine in device also? If no, then what issues are to be taken care?
What are the design issues to be taken care while developing Games
Which should be portable across all the vendor phones?
I�ve 1 MB png file in server but mobile supports 512 KB only So, how can
You download/access the image?
The mobile device has only 512 KB heap memory. An application needs 1 MB heap memory. How to make this application run without any problem?
If there are 3 applications each of 512 KB heap memory then, how memory management is done?
How to load the Image from Servlet to MIDlet?
When Garbage Collection is invoked, is there any guarantee that memory
Will be released?
5 forms are present and 1 Image is there. I need to access the same image
Over the 5 forms efficiently without creating the image using createImage, How?
Wht is use of Tilde layer?
Difference between Canvas & GameCanvas?
When do you need to use more than one thread in J2ME?
Is Threading internally implemented in the same way in Java & J2ME or is
There any difference?
Default value of Boolean variable in destroyApp() when it is invoked?
Difference between notifyDestroyed() and destroyApp()?
What are the ways to port applications to mobile?
How to find Button Clicks in J2ME similar to EventListeners in AWT?
Thanks,
Ravi.

Hi,
1) With 11g recently becoming available, should we upgrade to 11g or upgrade to 10g ?You should upgrade to 10g, and apply the latest 10g patches.
2) There is a white paper on Metaline (313418.1) that discusses using 10g with EBS. Is there anything similar for 11g ?11g is not available with the EBS. It has a different architecture and is not supported with EBS.
3) Can anyone share with me how long the actual upgrade process takes (please specify if your timings are 10g or 11g) ? To upgrade you need to do a new install of Discoverer 10g and upgrade the EUL. Make sure you have a good backup of the EUL before starting. The Discoverer install is straightforward and the EUL upgrade only takes a minute. BUT although all the workbooks are upgraded they are changed in ways that you might not have expected. Parameters become optional, occasionally worksheets disappear, titles get corrupted, the SQL generated can different, may perform more slowly and may occasionally return different results. It is sorting out these issues and regression testing the workbooks that take the time.
Rod West

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