Recent update: 2008-5-9

Is it possible to know which ports are restricted by the mobile with J2ME ?

46 byte By psykrodelika at 2007-11-15
All in the title. Thanks,Pierre.

writing your own video codec

515 byte By michael.may.csofta at 2007-9-25
I've got a requirement to implement a video codec from Symbian C++ in J2ME.Ideally I'd like to just write the codec and hook it into the MMAPI media player (javax.microedition.media) but this looks doubtful from the specs.I really don't want to be rendering the frames myself, but if I have ...

urgent: HTTP over Wifi connection problem

634 byte By Birhanua at 2007-9-25
The issue of http connection over wifi has been raised so many times and most guys comment that once there is a wifi connection the midlet is unaware of what kind of connection it is using. . I did try to make an http connection from a midlet to a web server to access a text file, that works ...

httpconnection problem :(

5050 byte By umitkavala@gmail.coma at 2007-9-25
i wanna write a code for my mobile phone which connects to internet and show me the contents of url. i wrote this code. when i compiled with emulator of t630 mobile phone it's working. but when i tried to send jar and jad file to mobile phone via bluetooth there is a error. it says to me ...

TCP sequence number

229 byte By grotiusa at 2007-9-25
hi! I'm using a socket connection in my j2me application and i need to know the sequence number of every tcp packet that i receive, can i do that?I was searching and i didn't find anything... thanks!

Problem with Network Demo in Java WTK

249 byte By Gaayuua at 2007-9-24
Hi,I have problem in running the network demo inthe java WTK. When i launch the application it says Waiting for Connection and teh application hangs up.I'm quite new to this JWTK. Please help me outThanks,Gayathri

How to run a java project based on x86 Windows XP on Windows CE?

819 byte By F_cka at 2007-9-24
I am a freshbird of J2ME and i am very confused these days.I beg you can look this topic thoughout.I used to configurate a Java Project File about SIP&VOIP successfully,and I can run it well on my PC .Now I want to migrate the project to a Mobile OS,and problems comes.I have installed the ...

Is it possible to connect to a web Service(JAX-RPC) with a middlet?

74 byte By TheBeginner_77a at 2007-9-24
Is it possible to connect to a web Service(JAX-RPC) with a middlet?

SonyEricsson J2ME WTK Emulator for Linux

145 byte By Printisora at 2007-9-24
HiHere is a link that describes how to make Sony Ericsson WTK work under Linux (the third title): http://www.comjat.netMihai

problem whit audio in sony ericsson k300

362 byte By YezGara at 2007-9-24
Hello from colombia.I have this problem. I have an application that executes a file wav, in the emulator of java works perfectly nevertheless when proving it in the cellular east is speechless. i try whit a mp3 file but the application fails (MediaException error)to reproduce this files needs ...

java api for bluetooth in Motorola E1000

442 byte By e5010253a at 2007-9-24
Hi,I'm trying to run the example " JavaBluetoothDemo" from the WTK22on my mobile which is Motorola E1000 .When running the applicationit reaches the line: "LocalDevice localDevice = LocalDevice.getLocalDevice(); "and then an exception is thrown : "Device initialisation failed"Do I have to ...

Is there a real competitor to Microsoft Compact Framework ?

647 byte By jluispereza at 2007-9-24
Hi everybody, I'd like to gather your opinions about latest strategy of Palm to recover market share. Do you think it would be feasible Access Linux Platform ? I wish to read your comments about it. Does anybody tested <a href=" http://www.troltech.com">Trolltech development ...

Fundamental question

668 byte By DanielFoorda at 2007-9-24
Hello allcould you point me in the right direction.I am using net beans, and I want to write an application which will send a collection of objects to mobiles.However the objects on the server need to do various things that are only in the J2SE API packages.While the J2ME edition won't ...

Why Interfaces?

158 byte By aska at 2007-9-24
Why interfaces have Methods of type public & abstract only and Variables of type public, static & final only?. Also why no constructors?

how to stop the program for a while?

984 byte By frosen_suna at 2007-9-24
Hi,I've created a small prog that the only thing it does is to ask for a given password before granting access to certain data. It works fine on the WTK emulator (from Sun of course), but it crashes on a Nokia 6600 due to a bug in the Nokia's MIDP2.0 implementation. Now I need to trace/find ...

Please help me with - item Layout difficulty

440 byte By TheSniipea at 2007-9-24
Lads I'm having serious difficulty with a table expanding it. I have a table but I want it to expand to the size of the mobile screen. I thought tableItem1.setLayout(0x800); would do it but it doesn't change anything.I would really appreciate it if someone could help me out. I have a ...

keypressed() ?

484 byte By ali_hammada at 2007-9-24
hii have a small square on the screen which i want to move with the key events in such a way that if the key is kept pressed for a while the square should keep on moving in that direction and when i release the key it stopskeypressed() method moves the square but i have to press the key every ...

problem swiching display

389 byte By erviinsa at 2007-9-24
Hi,I have midlet wich "streams" video from webcam. This streaming is made in seperate thread and image is repainted each time when it is received. Problem ir this when user click "back" then I want to instantly show another Form to user and stop this webcam thread and skip all remaining bytes ...

Multiple Canvas Issue

366 byte By theevilclowna at 2007-9-24
Hello everyone!I am implementing my MIDP application into different canvasses to maximize readability, however, when I shift / transfer to another canvas, the screen flickers showing a white background before showing the next canvas display.Is there any way to solve this? Any help that could ...

J2ME tutorials

182 byte By linkydinka at 2007-9-24
Hi : )Just wondering if anyone has any suggestions for good J2ME tutorials, be it in book form, PDF, whatever. Specifically for making mobile phone games.Cheers!

calling next file, problem on display()

386 byte By sekar-j2mefourmsa at 2007-9-24
hi, iam doing an application in midlet, in that i want to call another file in same package using the constructor of that class. It is invoking the class, but the display(), and displayable() methods are not working and showing the errors. lcdui.Displayable.*; imported and, Display object ...

Sending And Receiving SMS through PC -- In J2ME

242 byte By Sachin.Kapsea at 2007-9-23
Hi All,I want send and receive SMS through PC to phone. I don't no anything about this. I want basic idea of this how to send and receive sms through pc. If any one has please reply imediately........Sachin

multiple choice list

640 byte By kapessa at 2007-9-23
Hello gurus,I want to display 9 choice lists on the form for selection of date , day, month, minute etc.. . .My problem is that I am not able to see the whole choice lists on the screen.I want these lists to be visible at one time by the user. I didn't find any setsize to set the size of the ...

dku-2 cables

100 byte By lape_acoha at 2007-9-23
help! does J2ME support developing applications with dku-2 cable?or does it with J2SE?

Audio Volume, Help Wanted

608 byte By Ade_Esana at 2007-9-23
hello allI've made sound midi files and placed them in my code and they work and play and the rest, but when taken to a handset they are really, really quite, you can hardly hear them. I've added a VolumeControl object but that seems to have no effect, it can mute the music and make it ...

Help pls.....

3144 byte By Blue_Eyea at 2007-9-23
Can any1 tell me why cant i create a MIDlet in such a file, and its error isUnable to create MIDlet EchoServerjava.lang.InstantiationException: Class not a MIDletat com.sun.midp.midlet.MIDletState.createMIDlet(+51)at com.sun.midp.midlet.Selector.run(+22)My source code are....package ...

push mechanism in midp1.0?

591 byte By Arrakeena at 2007-9-23
Hi, I'm writting an application who needs to receve some realtime info from a server. Doing polling over the connection periodically to ask for new data is not a solution, because i need the data to be real-realtime, and because every polling will produce some money charge on the phone.Is ...

SCANNER IN J2ME

382 byte By PAUHRa at 2007-9-23
Hi im working with a bluetooth scanner, and an iDEN phone. i have the connection from the scanner to my phone, and im sure that it's ok, but the question is how decode the data that my phone retrieve from the scanner ?the scanner that im using is FLIC.i know that exist symbol's classes but ...

File Operations thru J2ME

285 byte By rahuljagada at 2007-9-23
Hello,I am doin my final year project, and i want to upload some .txt files from PC to my mobile(6600). Even i want to send the data to PC back. How can i do. I don't want to use RMS. Tell me even how to do it usin J2SE/J2ME. Plz reply fast. Thank You in advance.

Getting record ID's

247 byte By J2ooMEEa at 2007-9-23
Hi,Does anybody know if there is a way of getting the record ID's for all the records stored in an RMS, im having some real difficulty in doing this and cant seem to find an appropriate method to do this.Thanks,J2ooMEE

log ,exp, pow functions are missing in J2ME CLDC API'S java.lang.math

406 byte By kiropola at 2007-9-23
I can't make sense that log, exp, pow functions are missing in J2ME CLDC API'S java.lang.math section. All other functions such as sqrt, min, miax and so on are there. I am trying to port an opp to mobile device, it uses log and during compilation and linking it says there's no such symbol. ...

How do i know the what data passed to the tomcat server from nokia 6600

288 byte By psenthilusa at 2007-9-23
i install my midlet in nokia 6600 and try to run my application it runs and some problems on Login how can i view what data send to the server and also what receive from tomcat server http://www.ada.gov.in:8080/ADAWebservices//HelpDesk.jad login id : 58password :anto

Access SIM from J2ME applications

271 byte By djarjara at 2007-9-23
Hi,Is there anybody that can tell me if there is a way to communicate with the SIM card (using SMS, phonebook, ...) on a J2ME phone that does not implement the JSR 177 Satsa interface?Thanks a lot in advance for your answers and have a nice week-end.

Help about Vodafone

610 byte By sun-shine at 2007-9-22
Hi All,I m developing midlet for vodafone handsets. Currently I m using V601SH. In my midlet, i haven't used any specific to JSCL. Its totally MIDP. The same application works in all Nokia,Motorola and Siemens handsets. But it doesn't work in sharp V601SH . The problem is my application can ...

a strange exception

1267 byte By shobhit_garg at 2007-9-22
hi alli'm doin a school project in j2me i have develop a address book for the mobile phone heres where i have got stuck this simple peice of code to browse the address boook is throwing an exception i don't know why..plz helppublic int enumerateContacts(String [] contacts)//string[] is passed ...

New To J2ME

540 byte By virajchia at 2007-9-22
Hi all ,I am new to J2ME . I dont how to write a Midlets for mobile phones. I have following problums to devlopering application for moblie phones.1. Where I write java classes (like java we are writing on JBuilder)2.Where I build (Compile) that java classes.3.Where I run that java classes or ...

SMSDemo project errir, null pointer exception, NullPointerException

597 byte By olmlanda at 2007-9-21
when I execute the SMSDemo project of MIDP2.1 , errors always occur when I want to receive a message, the error message is below:output of ktoolbar standard output:Project "SMSDemo" loadedRunning with storage root DefaultColorPhoneUncaught exception java/lang/NullPointerException.the reoccur ...

Portable FullCanvas?

1352 byte By adlarge.coma at 2007-9-21
Has anyone built portable applications that use a FullCanvas on Nokia phones and a generic Canvas on others? Our application needs to run on a variety of phones from Samsung to Nokia and we don't want to create separate code streams for each manufacturer. I've thought of a few ugly ways to ...

CANVAS and UNABLE TO LOAD CLASS

340 byte By denis_pitzalisa at 2007-9-21
hi all,I've tryed to implement a canvas in a palm using PalmOS4.0 and I apply the example in J2ME (McGraw Hill). So I create a ImmutableImage extends MIDlet and in this I ask for a ImageCanvas extends Canvas. But when I load the application I get a Unable to load canvas/ImageCanvasWhat is ...

MIDP - Float, Double - missing? Workaround?

717 byte By joshmana at 2007-9-20
Hii tried to use float or double in my first J2ME Project but it doesn't seem to work (although the compiler compiles the source throwing no exception, the application fails to run..).I had a look at the MIDP 1.0 specification and think i found that float and double are not supported. Is taht ...

Detect when socket is closed

327 byte By tbalcoma at 2007-9-20
I have a socket opened using the Connector class (TCP/IP). If I close my host application and leave the MIDlet running, I would expect to have an IOException thrown when I try to write to the OutputStream but that is not always the case. Is there a reliable way to see if the TCP/IP stream is ...

IBM J9 and Personal Profile

665 byte By ewa_annaa at 2007-9-20
Hi,I'm developing a Java application for Pocket PC 2002. I would like to use Personal Profile implementation since it seems to have all classes I need. I work with IBM Websphere Studio Device Developer 5.0, and I have already installed J9 VM on the pda I have. All the examples works fine, and ...

Upgrading existing MIDlets

1430 byte By shmoovea at 2007-9-20
Hi.I am developing a suite of networked two player games. I would like all of the games to share a common connection scheme. What I mean is that for all the games you will need to log on to a server that will tell who else is online, and you can choose who you want to play against.Over time, ...

Connecting to Tamcat with a Palm

279 byte By scotts28 at 2007-9-19
I am trying to connect to tomcat with my palm and it asks for a login everytime I first try to communicate with tomcat. I was wondering if there was a way to disable this. It is not coded so I am not sure if its on the server or its on my palm. Thanks for any help.

Need Help Getting Started w/ J2ME

505 byte By skippy.coma at 2007-9-19
I'm interested in developing applications for the PalmOS. I've looked around and I'm getting confused by all the acronyms and packages.Can someone tell me how to find a good tutorial on how to get started, and maybe even code a simple app to get started? Also, what packages and api's do I ...

MIDP, RMS, and Oracle

320 byte By boldec at 2007-9-19
If I build an MIDP application for handheld devices that will collect data into an RMS, is it possible when the user then HotSync's to some server, to extract the data that is contained in their RMS to an Oracle database for example on that server that they are HotSyncing to?Thanks for any ...

Zip Exception Problem using jeode to unzip file

2367 byte By dnasarpuri at 2007-9-19
Hi,I am using a JAva application, that has a client running on the IPAQ-Jeode JVM and the server is on JDK 1.3.The application is using RMI to communicate between the Server and the PDA. The application code is running on JDK 1.3. Once the RMI communication is established, the server (during ...

conduits and synchronisation with palm

316 byte By mrdavidrussell at 2007-9-18
hey, im currently writing a stock control app for MIDP on a palm. i will need to sync this data to a db on the desktop. ive heard there are problems involved with this, ie using conduits to sync. if anyone has any knowledge on this subject, i would appreciate any info. dave ...

IO Exception

1681 byte By arjanik at 2007-9-18
hi there,i am connecting my midlet with j2ee server using httpConection inteface, and it is working fine, but some time it giving some io exception like this, am using DataInputStream and DataOutputStream ..:java.io.IOException: malformed response messageat ...

HttpConnection - Too many connections error

1202 byte By sudheerd at 2007-9-18
Hi,I have written a midlet which needs to connect to an Http server at a regular intervel. The app works fine in the default standalone MIDP emulator (Not J2MEWTK). But when I have run the same midlet in J2MEWTK 1.0.3, I am getting the following errorjava.io.IOException: exceeded the configured ...