I did contact the J2ME Polish forum but no response. The J2ME list did have older archives on why the Connection class would be throwing a ConnectionNotFound exception and primarily was because of a non-supported protocol. So that's why I was wondering if there is anything else that I needed to configure with the emulator here or if the only option would be to rewrite all those parts of this code.
In any case - thanks very much Miguel. If I do find a soln I would be happy to share it just in case anyone needs it - even though I have a feeling few ppl would be willing to follow this rough path ;) Cheers On Sep 10, 10:38 pm, Miguel Morales <[email protected]> wrote: > Ah. Perhaps you might have better luck contacting the J2ME polish or > J2ME mailing lists? > > > > On Fri, Sep 10, 2010 at 7:04 PM, kypriakos <[email protected]> wrote: > > > Thanks for the good information Miguel, I appreciate it even though > > I am aware of most of the code you are displaying below. > > > My original question was a more general one, regarding the porting of > > J2ME code into Android, something that has been an issue for many > > developers who have large chunks of code in J2ME that are not easy > > to rewrite. I didn't give much information about the overall goal so > > you > > are right, the small code segment I showed looked like a very small > > update that would have taken seconds actually to port and in fact > > modified to be done correctly (to avoid casting etc.). That > > particular > > piece of code is trying to open tcp sockets and use low lever streams > > to communicate. > > > I have been porting a large peer-to-peer software baseline that has > > been > > running successfully under J2ME. In fact most of the code I imported > > in Android so far from J2ME has been working correctly and with very > > good performance results. The J2ME Polish project actually has ported > > the libs that I need in this case (including the javax.microedition) > > for the > > Android platform and that's what I have been using. > > So no, I am not "lazily" importing old code, I am importing current > > code > > that we need to run on Android. Logically if the places where this > > Connection > > class is used is in the hundreds, it made sense to be more efficient > > and try > > to use libs of J2ME ported in Android rather than changing all those > > places. > > Yes - not optimal but it is what it is. > > > In summary, yes you and others have answered my original question, > > unless > > the trafeoffs are against it, it makes sense to always try to > > 'translate' everything > > that you run on Android using Android's API. > > > Again thanks for the good pointers below > > > On Sep 10, 7:26 pm, Miguel Morales <[email protected]> wrote: > >> Sounds like you're doing it wrong. One, try not to include any > >> foreign APIs/Jars unless you need it. Two, instead of trying to > >> lazily port old code, redo the functionality using the classes android > >> provides. > >> Casting is prone to bugs, if don't incorrectly, it can hide warnings > >> and errors. I don't know what it is you're trying to do there. > > >> You haven't explained what it is you're trying to do. Are you trying > >> to open a socket and communicate via low level streams or just http? > > >> I suspect what you're trying to do is really easy, and shouldn't have > >> taken more than a few minutes to update. > > >> You'll want to create an http url using the Url class: > > >> String mUrl = "http://whatever.com";; > >> URL url = new URL(mUrl); > > >> Then open a connection using URLConnection: > > >> URLConnection connection = url.openConnection(); > > >> You can then work with the stream directly using > >> connection.getInputStream(), or work with BufferedReader like: > >> BufferedReader in = new BufferedReader(new > >> InputStreamReader(connection.getInputStream()), 8); > > >> Grab the response to a string, not recommended, but if it's not a lot of > >> data: > >> String line; > >> while ((line = in.readLine()) != null) > >> { > >> response = response + line;} > > >> in.close(); > > >> On Fri, Sep 10, 2010 at 2:56 PM, kypriakos <[email protected]> wrote: > > >> > Will do - thanks > > >> > On Aug 27, 7:05 am, "[email protected]" <[email protected]> > >> > wrote: > >> >> How about using a semi-automated service to convert J2ME to Android ? > >> >> Give it a try - free for eval purposes. Take a look atwww.upontek.com, > >> >> or send me your jar to [email protected] > > >> >> Thanks !!!! > > >> >> On 27 אוגוסט, 11:28, Indicator Veritatis <[email protected]> wrote: > > >> >> > Since Android does not include the javax.microedition package, one > >> >> > should not expect an exact equivalent. But we do have the > >> >> > org.apache.conn and org.apache.http.* packages; some of us think these > >> >> > are much better than anything in javax.microedition! > > >> >> > One should still expect to use a very little bit from java.net, e.g. > >> >> > the Url and Uri classes. > > >> >> > On Aug 26, 1:40 pm, kypriakos <[email protected]> wrote: > > >> >> > > Does anyone know the equivalent of these imports from J2ME to > >> >> > > Android? > > >> >> > > import javax.microedition.io.Connector; > >> >> > > import javax.microedition.io.HttpConnection; > >> >> > > import javax.microedition.io.SocketConnection; > >> >> > > import javax.microedition.io.StreamConnection; > > >> >> > > Also, I needed to import midpapi20.jar but I don't want to use > >> >> > > packages > >> >> > > outside Android into my app -- would I be able to find most of the > >> >> > > related packages in Android libs? > > >> >> > > Thanks very much-הסתר טקסט מצוטט- > > >> >> > -הראה טקסט מצוטט- > > >> > -- > >> > You received this message because you are subscribed to the Google > >> > Groups "Android Developers" group. > >> > To post to this group, send email to [email protected] > >> > To unsubscribe from this group, send email to > >> > [email protected] > >> > For more options, visit this group at > >> >http://groups.google.com/group/android-developers?hl=en > > >> -- > >> ~ Jeremiah:9:23-24 > >> Android 2D > >> MMORPG:http://developingthedream.blogspot.com/,http://diastrofunk.com,http:/... > > > -- > > You received this message because you are subscribed to the Google > > Groups "Android Developers" group. > > To post to this group, send email to [email protected] > > To unsubscribe from this group, send email to > > [email protected] > > For more options, visit this group at > >http://groups.google.com/group/android-developers?hl=en > > -- > ~ Jeremiah:9:23-24 > Android 2D > MMORPG:http://developingthedream.blogspot.com/,http://diastrofunk.com,http://www.youtube.com/user/revoltingx -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
