what's the difference in the API's of Nokia's J2ME and sun J2ME
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Each of the handset manufacturers has implemented their own proprietary features (and bugs).
Remember that using any of these facilities means that your code won't run on any handset that doesn't support that facility. Here are the sites for some of the main manufacturers:
Nokia: http://www.forum.nokia.com
Motorola: http://www.motocoder.com/m
Sony Ericsson: http://developer.sonyerics
Siemens: https://communication-mark
Sorry mahashexp, that last comment isn't quite true. There is no "control" of i18n in J2ME, you can check the locale (which comes under the heading of "i18n"). This can be checked by reading the property "microedition.locale".
I must admit that non of the MIDlets I've written yet require i18n (they've all been done in English). However, I just remembered reading something about this before ;-)...
http://developers.sun.com/
I found this on Sun's site using the following search. It turned up quite a lot of articles that may be useful. Good luck :-)
http://onesearch.sun.com/s
If I have really good ideas, I develop them myself ;-)
However, have a think about the advantages that J2ME has (I'm assuming that you're thinking of mobile phones rather than PDAs). I regularly get approached with ideas for MIDlets that could just as easily be done with WAP (or even just SMS). When you do come up with an idea, consider whether it could be done (potentially more easily) with WAP. This mainly applies to systems that require the retrieval of information from a server and presenting that information on the screen (possibly including some feedback to the server).
Some key questions that it's worth asking:
1) Does any processing need to be done locally on the client (phone)?
2) Is information stored locally that would be difficult to manage using a WAP browser?
3) Is it necessary to deal with dynamic graphics that either cannot be done with a WAP browser or would require many request/responses?
4) What handsets (phones) are you targetting? You might find that you can come up with interesting ideas more easily if you restrict your target devices to MIDP-2.0 phones or possibly specific phones from specific manufacturers (eg. Sharp GX20/30 with their 3D APIs or Motorola with their "fun lights")
Just some thoughts ;-)
The 6610 is straight-forward MIDP-1.0 compliant series 40 with no "extras" (some series 40 handsets have the ability to handle SMS using the Wireless Messaging APIs (WMA), but not this one).
How complex does your application need to be in order to qualify for your course? Are there any limitations (eg. should you only be writing some code for a handset or will you have the time/scope/resources to write and host a server too)? What kind of ideas have you had already?
Bear in mind that we're going all over the place in this (50 point) question.
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by: JavaInTheMorningPosted on 2004-06-13 at 10:53:21ID: 11300614
Nokia extends many things that aren't present in the MIDP 1.0 default implementation:
I'll state the main things:
1) FullCanvas - Use the entire screen as a canvas
2) SoundPlayer - Use it to play sounds (formats depend on the specific device - wav, tone)
3) DirectGraphics - Allows pixels manipulation (changing colors, rotating, flipping...)
These are the main things, and of course, there are many more.
Read the Nokia's API to see what they've added.
Itsik