Mobile Development Forum

I am writing a java application on mobile which uses Bluetooth connections The javac compiler compiles the file without error but when I try to exe a certain part of the code it says: ALERT:Cannot create class in system package and this doesnot happen in application beginning it happens at …

I am new to Blackberry Development so Please inform me how to run existing midlet jar in blackberry using eclipse ide i am using eclipse Version: 3.4.1 with blackberry plugin and simulator is 8300... Step By step information Please....

Hello! I am new in J2ME and I had a project about how to build a communication system by java codes.I just need to know the problem I have in my code such that I get an error when execute it through console.The error is: javax.microedition.io.ConnectionNotFoundException:The requested Protocol doesnot exist …

as a undergrad student i am thinking of making a mobile application online traffic system and informer using java specially for nokia mobile devices i have almost finished developing its algorithm and some design works are on progress but i am really stuck and confused about which ide should i …

Hi, I encounter the problem of not being able to read the information from the contact list. It is ok to read organization name and email. But I can not read the name information. I get the exception message of java.lang.IndexOutOfBoundsException: Empty field: 106>, Exception caught in Display class What …

Hi, Anyone please help me on how to proceed for reading and writing file in j2me. If anyone can provide sample code then that will be very useful! Thank you!

Hi I am testing to write a contact list program. I store the information regarding name, Organization name, tel no and e-mail. When I select the read command, it shows all the organization name, e-mail in the list. It is all ok so far. I want to write the program …

Hi! I am tryig to write a simple j2me MIDlet program. Using that program, a user has to fill the required information to make an air reservation. And he also can see the resersation list. I used the Recordstore to write and read again that reservation list. But my program …

Hi there i m new to GUI programming and i have started it from midlet. the problem is, i have made separate classes for each page/form that is to be displayed on a mobile screen but dont know how to link them. Like i want when my login successful, my …

HI, i have written a j2me application using netbeans..can anybody tl me how to install this application to mobile?????????????

Hi everybody I am a beginner of j2me programming. I am reading a book regarding J2ME programming and that book is ok for me. But when I came across j2me programms of my friend, they are very complex for me although I know the basic things. For example, I thought …

Hi, Please guide on whats the best practice to return multiple rows in JWS to the consuming client application. Currently i'm using Netbeans 6.7. Thanks.

Hai Friends, Iam doing project in J2ME, in MIDlet Form i append three textfields , one CustomItem control, how to setfocus(to set focus in second textfield when starting project) and to get focus(Currently Selection in which control). i doknow hot to get focus. please help me for this problem.

Hello, i have a few questions regarding - writing software and using that software in my cell phone. -Which language is best for cell phone software? - Can i use java, and would that be the easiest? -where do i even start when i begin to write a cell phone …

Hello, I'm working on a bluetooth chat application project called 'BlueChat'. I coded the server (BServer.java) and client (BClient.java) parts (2 separate threads). The visual part is called BlueChat.java and allowes the user to select to be the server or the client. I wrote a lot of System.out.println("")'s to check …

I'm starting to learn MIDlet and I need a little help with a project. I have a MIDlet which would be a client. This client has to connect to a database - it will send some information to it and also receive an answer back. I have to use Socket …

I am trying to create file using RMS. I couldn't use List Command to create a file using RMS. Can you suggest easier way to create a file using List. [code=java] import javax.microedition.midlet.*; import javax.microedition.rms.*; import javax.microedition.lcdui.*; public class RmsNormal extends MIDlet implements CommandListener { private Display disp; private Command …

Hello, This is my first post so I hope this is clear and in the correct place. I am having trouble dealing with the traverse method of Custom Item in J2me. What I want to do is have two custom items, one is "start game", the other "instructions" as menu …

Please help me with code. I have create WebApplication/HelloServlet and Midlet using netbean 6.7 When i access Servlet using IE is see "Hello World!" But when i access the same from emulator calling it in Midlet. i see following code on my emulator screen. Is this the correct output? [code=html] …

Hi i want to show a wap website on Java ME application but i dont know how !!! please help me to do it thanks

Hai Friends, Iam using canvas class in my J2ME progrm,it does show full screen view in mobile, i want to show j2Me form to full mobile screen, please help me for this problem.

need it really badly for my project... pls help me... i'm a java neophyte...T.T

[B][COLOR="Green"]Hello [/COLOR][/B]to each member of this community.I am a new member of this community and wants to know about [COLOR="Red"]bluetooth connectivity [/COLOR]from [COLOR="Green"]pc to mobile[/COLOR],if any one has relevent information(include code also) plz, provide me. [B][COLOR="Green"]Thanks a lot[/COLOR][/B].:icon_razz:

guys..I'm in my senior year and I need to make a senior project by next semester. I'm planning to make a mobile application that will send the data to a computer and store it in a database and finally output it in a webpage or something. the problem is I …

hi i have a j2me application with a display set to Canvas. when i try to change the midlet's display to another Canvas using the following command: Display.getDisplay(this).setCurrent(Canvas2); nothing happens. how can i efficiently change a display to another Canvas ?

This is simple example how to get data reading from mobile phone's in-built sensor with JSR-256 and Java Microedition SensorMidlet.java [code=java]/** * * @author Peter Miklosko * @homepage http://www.peterscorner.co.uk */ import javax.microedition.midlet.MIDlet; import javax.microedition.lcdui.Canvas; import javax.microedition.lcdui.Command; import javax.microedition.lcdui.CommandListener; import javax.microedition.lcdui.Display; import javax.microedition.lcdui.Displayable; public class SensorMidlet extends MIDlet implements CommandListener { …

i have a midlet which has got a static variable. i need to keep the record of all the instances created in this variable. but it does not work like static variable. my code segments look like this. i am running this midlet on sun wireless toolkit 2.5.5. i can …

I seem to have a problem displaying an image from the phone's filesystem in J2ME. The following code works for images that are in the res folder but not if the path references to a file on the filesystem .. [code]path = "file:///C:/Data/Images/200908/25082009004.jpg"; try { image = Image.createImage(path); } catch …

hi all, i'm developing a j2me application that can send and receive messages, but i don't know how to select multiple contacts from phonebook. Can anyone pls help me. Its urgent. Thanks in advance Satish

Hello, I'm learning Java ME, remember that i'm already a Java developer, but i want to create another form to show all the details of the contact, like that of the contact book of the cell phones, here is my code: [CODE=java]package contacts; import java.io.*; import java.util.Vector; import javax.microedition.midlet.MIDlet; import …

Hello, I'm learning Java ME, remember that i'm already a Java developer, but i was trying to do a simple contact book application, then when it was finished i run it in the WTK emulator, but when i try to add some record it only shows me the message that …

Hello, I'm learning Java ME and i was building an application that is a simple contact book, but in the main form it only have menus, because i don't know how i can list the registry's on it, remember that i want to list only the names in the list …

Hello, I'm learning Java ME and when i complete the development of an application that uses RecordStore, it's simple a contact book, but when i completed the code i see that my program have an error and i use Eclipse, then it marks wrong codes in the left of the …

Hello, I'm starting in Java ME development, but when i finished the code, that i'm developing using Eclipse, it shows that my code have an error, with that red x in the left of the code line, here is the code: [code=java]package comm; import javax.microedition.midlet.MIDlet; import javax.microedition.midlet.MIDletStateChangeException; import javax.microedition.lcdui.Display; import …

HI, I am beginner in j2me. Trying to store the data[array] into next form. It will be helpful if you provide edit and delete the records from the form2. Can you suggest easier way to store the values in j2me [code] import java.io.*; import java.util.*; import javax.microedition.lcdui.*; import javax.microedition.midlet.*; public …

Hello everyone. Im trying to write a program for a cellphone that gets inputs from the user, does some calculations then displays various outputs. I am very new to java programming and getting a little confused. I am having trouble with finding out how to read the values from the …

Hey guys, I'm coding a phonebook viewer using J2ME, now the following code appears to break when the hasMoreElements gets fired! The exception is a arrayoverflow type on. Not sure why though [code] /* * Midlet.java * * Created on 15 July 2009, 23:38 */ import java.util.Enumeration; import javax.microedition.midlet.*; import …

how can i call a midlet from another midlet?

Hi there... I'm a newbie in J2ME. I plan to make a project about SMS & MMS Layout Animation in Mobile Phone. Is it possible to make it so? If yes, would you mind telling me the steps of making its project? Thanks a lot.

Hello all, I am having a problem using HttpConnection.close() in my MIDlet. This happens on certain devices only like N5310, it is working fine on other devices. here is my code: [code=java] try{ HttpConnection http = (HttpConnection) Connector.open(URL); http.setRequestMethod(HttpConnection.GET); ....//some other processes here. }catch (Exception e){ }finally{ if(http != null) …

i am using netbeans for displaying my midlet, and am using sun wireless toolkit emulator, and one knows how to change the emulator to nokia or samsung for example? lets says samsung D900 or nokia 5300 for example. thank u all!

Greeting, I'm currently programming a client-server connection with single socket...I use Linux C programming for server side, and J2me for client side, and here's the problem... The login function run successfully for the server side, when It's a null exception for the client. The error is as follow: [CODE]java.lang.NullPointerException at …

hi all, i am new to programing forums, i am here to ask a help, please if any of u r able to help me i would be great full to u and may be able to help u or others in the future. i am making a pacman game …

hi all, am still new in developing J2ME applications.I have a mobile application that needs to connect to mysql database using JSP as the middleware..can anyone please sort me out am stuck on the how to go about it.

Hi, I'm doing a program that sends and receives message using SIP. I want to generate key pair for this program as i need the key pair to create certificates. I'm able to found key pair generation codes, but however when i call the key pair generated into the MIDlet, …

Hullo members am developing a cell phone app for my mobile device and I have a java code I have written to do this. I would like any body to help me complete it so that its complete and make the time and date not to disappear after some time. …

This is my code: package hello; import javax.microedition.midlet.*; import javax.microedition.lcdui.*; /** * @author User */ public class TBexample extends MIDlet { Display display; public static String txt; TextBox sample; public TBexample() { txt = "enter your text here"; } public void startApp() { // String localtext ="hi"; display = Display.getDisplay(this); …

Hi all, I'm kind of new in Java MIDlet, and i'm having some troubles. Let say i got a MIDlet project, named APP.java, and the MIDlet project runs smooth without any problem. And i have another java application, named testing.java, and the java code runs smooth as well. But when …

hi guys, I'm creating a midlet application with Netbeans. When I select build, the IDE builds my application successfully but goes ahead to run it's emulator. This has the effect of increasing the resulting jar file 7 fold in size. Does anyone know how to change the setting to build …

Hi to all, im MJ a 4th year Computer Science student... well im new at using netbeans... can someone please help me to have a tutorial about the codes on Mobile Applications... cause im planning to make an applet that will server as a quick refresher about a certain subject …