Error in httpconnection in MIDlet

hai all
i use following code to get a connection from midlet.I try it using WTK2.0 and the emulator.But it asks that
"Wants to send information.This will require the use of airtime which may cost you money. Is this OK?(http)"
and then i select "this time.Ask me next time" option which is the default one.
but i got error while connecting....
please help..Thanks in advance.....

I hope you are running httpConnection behind the proxy. I also got same problem when i tried to connect through the proxy. I solved the problem by using local Web Server in my system. I hope there is the problem from proxy when you connect through the proxy if your code is correct.

Similar Messages

Strange Error inside of my MIDlets; ONLY on mobilephones. Emulator works

Hi there,
I got an strange error during using my MIDlets on my mobilephone.
I created two MIDlets, connecting to webservers via HTTP.
both work fine in emulator, but not on a real phone :-(
Logging from server tells me,
that NO request was sent to the server.
I got back that Exception:
ConnectionNotFoundException
with message: Error connecting
Did I missed a config-detail, or whats wrong on this?
Thanks in advice.
Regards,
Matthias

Khalid.Ali,
thanks for you quik replay!
Yes, my phone supports MIDP2.0and CLDC 1.1
My Midlet compiles agains MIdP1 and MIDP2
It runs! All screens are shown on my phone.
but when I press the Command to send a Request,
I got that Exception.
(The message of the Exception I read in catch-block
and put it to the Form-class, shown after that)
so MIDlet works, but not the HTTP-Access
any ideas?
Please, what did you mean with "data plan with your service provider" ?
I could read the page in WAP-Browser (from my phone) that I try to read
in the MIDlet with HTTP
Thanks

Need help with my HttpConnection From Midlet To Servlet...

NEED HELP ASAP PLEASE....
This class is supposed to download a file from the servlet...
the filename is given by the midlet... and the servlet will return the file in bytes...
everything is ok in emulator...
but in nokia n70... error occurs...
Http Version Mismatch shows up... when the pout.flush(); is called.. but when removed... java.io.IOException: -36 occurs...
also i have posted the same problem in nokia forums..
please check also...
http://discussion.forum.nokia.com/forum/showthread.php?t=105567
now here are my codes...
midlet side... without pout.flush();
public class DownloadFile {
    private GmailMidlet midlet;
    private HttpConnection hc;
    private byte[] fileData;
    private boolean downloaded;
    private int lineNumber;
//    private String url = "http://121.97.220.162:8084/ProxyServer/DownloadFileServlet";
    private String url = "http://121.97.221.183:8084/ProxyServer/DownloadFileServlet";
//    private String url = "http://121.97.221.183:8084/ProxyServer/Attachments/mark.ramos222/GmailId111d822a8bd6f6bb/01032007066.jpg";
    /** Creates a new instance of DownloadFile */
    public DownloadFile(GmailMidlet midlet, String fileName) throws OutOfMemoryError, IOException {
        System.gc();
        setHc(null);
        OutputStream out = null;
        DataInputStream is= null;
        try{
            setHc((HttpConnection)Connector.open(getUrl(), Connector.READ_WRITE));
        } catch(ConnectionNotFoundException ex){
            setHc(null);
        } catch(IOException ioex){
            ioex.printStackTrace();
            midlet.alertScreen = new AlertScreen("Error C1", ioex.toString(),
                    null, AlertType.ERROR);
            midlet.alertScreen.setTimeout(Alert.FOREVER);
            midlet.display.setCurrent(midlet.alertScreen);
        try {
            if(getHc() != null){
                getHc().setRequestMethod(HttpConnection.POST);
                getHc().setRequestProperty("Accept","*/*");
                getHc().setRequestProperty("Http-version","HTTP/1.1");
                lineNumber = 1;
                getHc().setRequestProperty("CONTENT-TYPE",
                        "text/plain");
                lineNumber = 2;
                getHc().setRequestProperty("User-Agent",
                        "Profile/MIDP-2.0 Configuration/CLDC-1.1");
                lineNumber =3;
                out = getHc().openOutputStream();
                lineNumber = 4;
                PrintStream pout = new PrintStream(out);
                lineNumber = 5;
                pout.println(fileName);
                lineNumber = 6;
//                pout.flush();
                System.out.println("File Name: "+fileName);
                lineNumber = 7;
                is = getHc().openDataInputStream();
                long len = getHc().getLength();
                lineNumber = 8;
                byte temp[] = new byte[(int)len];
                lineNumber = 9;
                System.out.println("len "+len);
                is.readFully(temp,0,(int)len);
                lineNumber = 10;
                setFileData(temp);
                lineNumber = 11;
                is.close();
                lineNumber = 12;
                if(getFileData() != null)
                    setDownloaded(true);
                else
                    setDownloaded(false);
                System.out.println("Length : "+temp.length);
                midlet.setAttachFile(getFileData());
                lineNumber = 13;
                pout.close();
                lineNumber = 14;
                out.close();
                lineNumber = 15;
                getHc().close();
        } catch(Exception ex){
            setDownloaded(false);
            ex.printStackTrace();
            midlet.alertScreen = new AlertScreen("Error C2+ line"+lineNumber,
                    ex.toString()+
                    " | ",
                    null, AlertType.ERROR);
            midlet.alertScreen.setTimeout(Alert.FOREVER);
            midlet.display.setCurrent(midlet.alertScreen);
    public HttpConnection getHc() {
        return hc;
    public void setHc(HttpConnection hc) {
        this.hc = hc;
    public String getUrl() {
        return url;
    public void setUrl(String url) {
        this.url = url;
    public byte[] getFileData() {
        return fileData;
    public void setFileData(byte[] fileData) {
        this.fileData = fileData;
    public boolean isDownloaded() {
        return downloaded;
    public void setDownloaded(boolean downloaded) {
        this.downloaded = downloaded;
}this is the midlet side with pout.flush();
showing Http Version Mismatch
public class DownloadFile {
    private GmailMidlet midlet;
    private HttpConnection hc;
    private byte[] fileData;
    private boolean downloaded;
    private int lineNumber;
//    private String url = "http://121.97.220.162:8084/ProxyServer/DownloadFileServlet";
    private String url = "http://121.97.221.183:8084/ProxyServer/DownloadFileServlet";
//    private String url = "http://121.97.221.183:8084/ProxyServer/Attachments/mark.ramos222/GmailId111d822a8bd6f6bb/01032007066.jpg";
    /** Creates a new instance of DownloadFile */
    public DownloadFile(GmailMidlet midlet, String fileName) throws OutOfMemoryError, IOException {
        System.gc();
        setHc(null);
        OutputStream out = null;
        DataInputStream is= null;
        try{
            setHc((HttpConnection)Connector.open(getUrl(), Connector.READ_WRITE));
        } catch(ConnectionNotFoundException ex){
            setHc(null);
        } catch(IOException ioex){
            ioex.printStackTrace();
            midlet.alertScreen = new AlertScreen("Error C1", ioex.toString(),
                    null, AlertType.ERROR);
            midlet.alertScreen.setTimeout(Alert.FOREVER);
            midlet.display.setCurrent(midlet.alertScreen);
        try {
            if(getHc() != null){
                getHc().setRequestMethod(HttpConnection.POST);
                getHc().setRequestProperty("Accept","*/*");
                getHc().setRequestProperty("Http-version","HTTP/1.1");
                lineNumber = 1;
                getHc().setRequestProperty("CONTENT-TYPE",
                        "text/plain");
                lineNumber = 2;
                getHc().setRequestProperty("User-Agent",
                        "Profile/MIDP-2.0 Configuration/CLDC-1.1");
                lineNumber =3;
                out = getHc().openOutputStream();
                lineNumber = 4;
                PrintStream pout = new PrintStream(out);
                lineNumber = 5;
                pout.println(fileName);
                lineNumber = 6;
                pout.flush();
                System.out.println("File Name: "+fileName);
                lineNumber = 7;
                is = getHc().openDataInputStream();
                long len = getHc().getLength();
                lineNumber = 8;
                byte temp[] = new byte[(int)len];
                lineNumber = 9;
                System.out.println("len "+len);
                is.readFully(temp,0,(int)len);
                lineNumber = 10;
                setFileData(temp);
                lineNumber = 11;
                is.close();
                lineNumber = 12;
                if(getFileData() != null)
                    setDownloaded(true);
                else
                    setDownloaded(false);
                System.out.println("Length : "+temp.length);
                midlet.setAttachFile(getFileData());
                lineNumber = 13;
                pout.close();
                lineNumber = 14;
                out.close();
                lineNumber = 15;
                getHc().close();
        } catch(Exception ex){
            setDownloaded(false);
            ex.printStackTrace();
            midlet.alertScreen = new AlertScreen("Error C2+ line"+lineNumber,
                    ex.toString()+
                    " | ",
                    null, AlertType.ERROR);
            midlet.alertScreen.setTimeout(Alert.FOREVER);
            midlet.display.setCurrent(midlet.alertScreen);
    public HttpConnection getHc() {
        return hc;
    public void setHc(HttpConnection hc) {
        this.hc = hc;
    public String getUrl() {
        return url;
    public void setUrl(String url) {
        this.url = url;
    public byte[] getFileData() {
        return fileData;
    public void setFileData(byte[] fileData) {
        this.fileData = fileData;
    public boolean isDownloaded() {
        return downloaded;
    public void setDownloaded(boolean downloaded) {
        this.downloaded = downloaded;
}here is the servlet side...
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        if(request.getMethod().equals("POST")){
            BufferedReader dataIN = request.getReader();
            String fileName = dataIN.readLine();
            File file = new File(fileName);
            String contentType = getServletContext().getMimeType(fileName);
            response.setContentType(contentType);
            System.out.println("Content Type: "+contentType);
            System.out.println("File Name: "+fileName);
            int size = (int)file.length()/1024;
            if(file.length() > Integer.MAX_VALUE){
                System.out.println("Very Large File!!!");
            response.setContentLength(size*1024);
            FileInputStream fis = new FileInputStream(fileName);
            byte data[] = new byte[size*1024];
            fis.read(data);
            System.out.println("data lenght: "+data.length);
            ServletOutputStream sos = response.getOutputStream();
            sos.write(data);
//            out.flush();
        }else{
            response.setContentType("text/plain");
            PrintWriter out = response.getWriter();
            BufferedReader dataIN = request.getReader();
            String msg_uid = dataIN.readLine();
            System.out.println("Msg_uid"+msg_uid);
            JDBConnection dbconn = new JDBConnection();
            String fileName = dbconn.getAttachment(msg_uid);
            String[] fileNames = fileName.split(";");
            int numFiles = fileNames.length;
            out.println(numFiles);
            for(int i = 0; i<numFiles; i++){
                out.println(fileNames);
out.flush();
out.close();
Message was edited by:
Mark.Ramos222

1) Have you looked up the symbian error -36 on new-lc?
2) Have you tried the example in the response on forum nokia?
3) Is the address "121.97.220.162:8084" accessible from the internet, on the device, on the specified port?

Error while executing the midlet ----pleasehelp

Hi everyone,
I am new to webservices, I am trying to execute a webservice from a midlet. Iam getting the below error.
java.lang.NoClassDefFoundError: org/kxmlrpc/XmlRpcClient
     at kxmlrpc_demo.commandAction(+49)
     at javax.microedition.lcdui.List.callKeyPressed(+80)
     at javax.microedition.lcdui.Display$DisplayAccessor.keyEvent(+198)
     at javax.microedition.lcdui.Display$DisplayManagerImpl.keyEvent(+11)
     at com.sun.midp.lcdui.DefaultEventHandler.keyEvent(+121)
     at com.sun.midp.lcdui.AutomatedEventHandler.keyEvent(+210)
     at com.sun.midp.lcdui.DefaultEventHandler$QueuedEventHandler.run(+178)
Below is my midlet code.
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.io.*;
import java.io.*;
import java.util.*;
import org.kxmlrpc.*;
public class MyMidlet extends MIDlet implements CommandListener {
     private List list;
     private Command exitCommand;
     private String[] menuItems;
     private Display display;
     private Alert response;
     private XmlRpcClient xmlrpc;
     private Vector params, xmlArray;
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          // Initialize the User Interface
          menuItems = new String[] { "Timestamp", "Randomizer", "AddressBook" };
          list = new List("Select a service", List.IMPLICIT, menuItems, null);
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          response.setTimeout(Alert.FOREVER);
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          list.addCommand(exitCommand);
          list.setCommandListener(this);
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          display = Display.getDisplay(this);
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     public void startApp() {
          display.setCurrent(list);
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     public void pauseApp() {
     }// end pauseApp()
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          // clean up
          list = null;
          exitCommand = null;
          display = null;
     }// end destroyApp
     public void commandAction(Command com, Displayable dis) {
          if (dis == list && com == List.SELECT_COMMAND) {
               switch (list.getSelectedIndex()) {
               case 0:
                    try {
                         xmlrpc = new XmlRpcClient(
                                   "<a href=http:// www.wsjug.org/servlet/XmlRpcServlet EUDORA=AUTOURL> http:// www.wsjug.org/servlet/XmlRpcServlet/a>");
                         params = new Vector();
                         String serverTime = (String) xmlrpc.execute(
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                         response.setString(serverTime.toString());
                         display.setCurrent(response);
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                         response.setString(ex.toString());
                         ex.printStackTrace(); // DEBUG
                         display.setCurrent(response);
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               case 2:
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                    display.setCurrent(response);
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               destroyApp(true);
               notifyDestroyed();
          }// end if( dis == list &&
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}// end MyMidlet
I think the problem here is with the kxml.jar file which I have placed every where I find the lib folder. Could anyone please tell me where to exactly place the kxml.jar file?
I am using Myeclipse IDE.
Please help.
Thanks in advance.
Regards,
Bharat Kumar

Hi Vamsi.
The exactly erro refers to a problems when you try upgrade from these version to 11.5.10.
Can you read this note and apply solution? The note refers a patch, but the problem is the same.
After Patch 4334965, adstrtal.sh & adstpall.sh is failing with errors [ID 360046.1]
BR Rafael Ceolim

Error to iniciate the midlet

Hi everyone!!!
I´m trying compilate the HelloMIDlet class that is the initial class in a new NetBeans java ME project.
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Starting emulator in execution mode
*** Error ***
Failed to connect to device 0!
Reason:
Emulator 0 terminated while waiting for it to register!
C:\Users\MyUseName\Documents\NetBeansProjects\MobileApplication3\nbproject\build-impl.xml:898: Execution failed with error code 1.
Please help me,
Regards

Thanks for trying helping me...
But I have the same error. I just have uninstall the netbeans and make refresh in the menu Tools > Java PlatForms > PlatForm Manager
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Getting error trying to install Midlet

Hello,
I am trying to install a Midlet on my Raspberry Pi (ME 3.3) by doing the following:
pi@raspberrypi ~/java_me_3.3/bin $ ./installMidlet.sh /home/pi/apps/TMP36rpi.jar
configdb_load_to_db error: Unable to open file, trying to recover from the temporal one
configdb_load_to_db error: temporal settings file is unavailable
ERROR: Unable to read configuration file(s). Check that ini file(s) exists in your application directory.
javacall_initialize_configurations_from_file failed
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pi@raspberrypi ~/java_me_3.3/bin $ ls /home/pi/apps
TMP36rpi.jad TMP36rpi.jar
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Thanks
Andy

Andrey,
still no luck:
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argv[1] = runMidlet
argv[2] = -1
argv[3] = com.sun.midp.scriptutil.CommandLineInstaller
argv[4] = I
argv[5] = file:///home/pi/apps/TMP36rpi.jar
Command line parameters are passed.
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Events system initialized.
Time system initialized.
JavaTask thread initialized.
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* /dev/root -> /
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ERROR request POST returns a 411 error

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HttpMidlet code
* HttpMidlet.java
* Created on October 23, 2001, 11:19 AM
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.io.*;
import java.io.*;
* @author kgabhart
* @version
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              result = sendHttpGet( requestField.getString() );
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            //resultScreen.append( result);
            //myDisplay.setCurrent( resultScreen );
        }//end if ( dis == list && com == List.SELECT_COMMAND )
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    private String sendHttpGet( String url )
        HttpConnection      hcon = null;
        DataInputStream     dis = null;
        StringBuffer        responseMessage = new StringBuffer();
        try {
            // a standard HttpConnection with READ access
            hcon = ( HttpConnection )Connector.open( url );
            // obtain a DataInputStream from the HttpConnection
            dis = new DataInputStream( hcon.openInputStream() );
            // retrieve the response from the server
            int ch;
            while ( ( ch = dis.read() ) != -1 ) {
                responseMessage.append( (char) ch );
            }//end while ( ( ch = dis.read() ) != -1 )
        catch( Exception e )
            e.printStackTrace();
            responseMessage.append( "ERROR" );
        } finally {
            try {
                if ( hcon != null ) hcon.close();
                if ( dis != null ) dis.close();
            } catch ( IOException ioe ) {
                ioe.printStackTrace();
            }//end try/catch
        }//end try/catch/finally
        return responseMessage.toString();
    }//end sendHttpGet( String )
    private void sendHttpPost( String url )
        //adding code to run thread call
         String contenT = "4444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444";//String tempURL = url /*+ "?filename=" + filename */;
        Download download = new Download (url, this, contenT);
        download.start ();
    }//end sendHttpPost( String )
    public void setOutput (String result)
        result = result.toString();
        resultScreen.append( result);
        myDisplay.setCurrent( resultScreen );
    public void pauseApp() {
    }//end pauseApp()
    public void destroyApp( boolean unconditional ) {
        // help Garbage Collector
        myDisplay = null;
        requestScreen = null;
        requestField = null;
        resultScreen = null;
        resultField = null;
    }//end destroyApp( boolean )
}//end HttpMidletThe Download class:
//class modified by Diego Gullo to implement multi-threaded connections in MIDP
//importing packages
import javax.microedition.io.*;
import java.io.*;
import javax.microedition.midlet.*;
class Download implements Runnable
    private String url;
    private String contenT;
    private HttpMidlet MIDlet;
    //private String imageName = null;
    private boolean downloadSuccess = false;
    //private String downloadResult;
    public Download (String url, HttpMidlet MIDlet, String content) //, String imageName)
        this.contenT = content;
        this.url = url;
        this.MIDlet = MIDlet;
        //this.imageName = imageName;
    * Download the image
    public void run ()
        try
            sendContent (url);
        catch (Exception e)
            System.err.println ("Msg: " + e.toString ());
    * Create and start the new thread
    public void start ()
        Thread thread = new Thread (this);
        try
            thread.start ();
        catch (Exception e)
    * Open connection and download png into a byte array.
    private void sendContent (String url) throws IOException
        HttpConnection      hcon = null;
        DataInputStream     dis = null;
        DataOutputStream    dos = null;
        StringBuffer        responseMessage = new StringBuffer();
        // the request body
        String              requeststring = contenT;
        try {
            // an HttpConnection with both read and write access
            hcon = ( HttpConnection )Connector.open( url, Connector.READ_WRITE );
            // set the request method to POST
            hcon.setRequestMethod( HttpConnection.POST );
            // obtain DataOutputStream for sending the request string
            dos = hcon.openDataOutputStream();
            byte[] request_body = requeststring.getBytes();
            // send request string to server
            for( int i = 0; i < request_body.length; i++ ) {
                dos.writeByte( request_body[i] );
            }//end for( int i = 0; i < request_body.length; i++ )
            // obtain DataInputStream for receiving server response
            dis = new DataInputStream( hcon.openInputStream() );
            // retrieve the response from server
            int ch;
            while( ( ch = dis.read() ) != -1 ) {
                responseMessage.append( (char)ch );
            }//end while( ( ch = dis.read() ) != -1 ) {
        catch( Exception e )
            e.printStackTrace();
            responseMessage.append( "ERROR" );
        finally {
            // free up i/o streams and http connection
            try {
                if( hcon != null ) hcon.close();
                if( dis != null ) dis.close();
                if( dos != null ) dos.close();
            } catch ( IOException ioe ) {
                ioe.printStackTrace();
            }//end try/catch
        }//end try/catch/finally
        // Return to the caller the status of the content
        if (responseMessage == null)
            //*MIDlet.*/this.setResult ("No content received!");
            while (responseMessage == null)
                this.sendContent (url);
        else
            //MIDlet.im = result;
            //MIDlet.result = result;
            MIDlet.setOutput (responseMessage.toString());
            //*MIDlet.*/this.setResult (result);
}Any suggestions to solve the problem???
Thanks

we've only deployed on 10.1.3.0.0 so i have not been able to confirm that this is not an issue in 10.1.3.1.0.
even if this has been fixed in 10.1.3.1.0, upgrading may not be an option for us, so we prefer a fix for this in 10.1.3.0.0.
thanks,
ted

Problem executing midlet

I launch a midlet with the j2me netbeans utility, but when I try to select (already in the mobile simulator), i get this error:
Unable to create MIDlet ListDemo
java.lang.ClassNotFoundException: ListDemo
        at com.sun.midp.midlet.MIDletState.createMIDlet(MIDletState.java:147)
        at com.sun.midp.midlet.Selector.run(Selector.java:151)I don't know if it is related to the code or if it is a common problem. I've tried searching on google and didn't get any feedback.
Here's the code
public class ListDemo
        extends MIDlet
        implements CommandListener {
    private final static Command CMD_EXIT =
            new Command("Exit", Command.EXIT, 1);
    private final static Command CMD_BACK =
            new Command("Back", Command.BACK, 1);
    private Display display;
    private List mainList;
    private List devList;
    private List roomList;
    private List specList;
    private boolean firstTime;
    public ListDemo() {
        display = Display.getDisplay(this);
        try{
            Hashtable deviceMap = getDeviceList();
            // this array defines the special actions
            String[] specArray = { "Dispositivos", "Habitaciones", "Modos" };
            // the string elements will have no images
            Image[] imageArray = null;
            devList = new List("Devices", Choice.EXCLUSIVE, fillDeviceList(deviceMap),
                    imageArray);
            devList.addCommand(CMD_BACK);
            devList.addCommand(CMD_EXIT);
            devList.setCommandListener(this);
            roomList = new List("Rooms", Choice.EXCLUSIVE, specArray,
                    imageArray);
            roomList.addCommand(CMD_BACK);
            roomList.addCommand(CMD_EXIT);
            roomList.setCommandListener(this);
            specList = new List("spec", Choice.MULTIPLE, specArray,
                    imageArray);
            specList.addCommand(CMD_BACK);
            specList.addCommand(CMD_EXIT);
            specList.setCommandListener(this);
            firstTime = true;
        }catch(IOException e){
            e.printStackTrace();
        }catch(XmlPullParserException xe){
            xe.printStackTrace();
     protected void startApp() {
          if (firstTime) {
               // these are the images and strings for the choices.
               Image[] imageArray = null;
               try {
                    // load the duke image to place in the image array
                    Image icon = Image.createImage("/midp/uidemo/Icon.png");
                    // these are the images and strings for the choices.
                    imageArray = new Image[] {
                              icon,
                              icon,
                              icon
               } catch (java.io.IOException err) {
                    // ignore the image loading failure the application can recover.
               String[] stringArray = {
                         "Dispositivos",
                         "Habitaciones",
                         "Especiales"
               mainList = new List("Choose type", Choice.IMPLICIT, stringArray,
                         imageArray);
               mainList.addCommand(CMD_EXIT);
               mainList.setCommandListener(this);
               display.setCurrent(mainList);
               firstTime = false;
     protected void destroyApp(boolean unconditional) {
     protected void pauseApp() {
     public void commandAction(Command c, Displayable d) {
          if (d.equals(mainList)) {
               // in the main list
               if (c == List.SELECT_COMMAND) {
                    if (d.equals(mainList)) {
                         switch (((List)d).getSelectedIndex()) {
                         case 0:
                              display.setCurrent(devList);
                              break;
                         case 1:
                              display.setCurrent(roomList);
                              break;
                         case 2:
                              display.setCurrent(specList);
                              break;
          } else {
               // in one of the sub-lists
               if (c == CMD_BACK) {
                    display.setCurrent(mainList);
          if (c == CMD_EXIT) {
               destroyApp(false);
               notifyDestroyed();
     private String[] fillDeviceList(Hashtable map){
          Enumeration claves;
          String[] devices = new String[map.size()];
          claves = map.keys();
          for(int j=0;j<map.size();j++){
               devices[j] = map.get(claves.nextElement()).toString();
          return null;
     private InputStream openUrl(String s) throws Exception {
          HttpConnection hc = (HttpConnection) Connector.open(s);
          return hc.openInputStream();
     private Hashtable getDeviceList() throws IOException,XmlPullParserException{
          DataInputStream dis = null;
          DataOutputStream dos = null;
          InputStream inputStream = null;
          Hashtable map = new Hashtable();
          try{
               inputStream = openUrl("http://localhost:8084/WebApplication1/listDevices.do");
               System.out.println("Despues de la conexi");
               KXmlParser parser = new KXmlParser();
               parser.setInput(new InputStreamReader(inputStream));
               parser.nextTag();
               parser.require(XmlPullParser.START_TAG, null, "devices");
               System.out.println("devices...");
               while(parser.nextTag() == XmlPullParser.START_TAG){
                    parser.require(XmlPullParser.START_TAG, null, "device");
                    String id = nextValue("device-id",parser);
                    String name = nextValue("name",parser);
                    String roomLocation = nextValue("room-location",parser);
                    String isAvaliable = nextValue("is-avaliable",parser);
                    String state = nextValue("state",parser);
                    map.put(id, name);
                    parser.nextTag();
               parser.require(XmlPullParser.END_TAG,null,"devices");
               parser.next();
               parser.require(XmlPullParser.END_DOCUMENT,null,null);
          }catch(XmlPullParserException xe){
               System.out.println("excepcion");
               xe.printStackTrace();
          }catch(IOException e){
               e.printStackTrace();
          }catch(Exception e){
               e.printStackTrace();
          }finally{
               try{
                    if (dis != null) dis.close();
               }catch(IOException ignored){}
               try{
                    if (dos != null) dos.close();
               }catch(IOException ignored){}
               return map;
private String nextValue(String tagName, KXmlParser parser) throws XmlPullParserException, IOException {
     String string = null;
     parser.nextTag();
     parser.require(XmlPullParser.START_TAG, null, tagName);
     string = parser.nextText();
     parser.require(XmlPullParser.END_TAG, null, tagName);
     return string;
}

Hi,
I had this problem in KToolbar which is the utility shipped with J2ME and what i had to do was make sure that KToolbar was looking for the main class to load, which in yours would be the ListDemo.class. i havn't used the netbeans utility but (if you can) make sure the main class is listed. (it might be in the project settings).
Dex

NOKIA Series 60 Error HTTP Connection

Hi..
Im developing a MIDlet that uses a HTTPconnection
The MIDlet worked fine using the Default emulator (Grayphone and the ColorPhone).
But when i tried it on NOKIA emulator (Series_60 MIDP_SDK for Symbian OS v 1_0) it couldnt create a connection. It throwed an IOException with Status = -191 message and when i printStackTrace the error i got this :
java.io.IOException: Status = -191
     at com.symbian.cldc.connection.ConnectionEndPoint.writeBytes(+140)
     at com.symbian.cldc.connection.OutputStream.flush(+23)
     at com.symbian.midp.io.protocol.http.HttpConnection.sendRequest(+101)
     at com.symbian.midp.io.protocol.http.HttpConnection.ensureResponse(+40)
     at com.symbian.midp.io.protocol.http.HttpConnection.openDataInputStream(+15)
     at com.symbian.midp.io.protocol.http.HttpConnection.openInputStream(+4)
     at NetConnect.connect(+303)
     at NetConnect.run(+25)
I couldnt figure it out what's wrong in the program ?
B'coz i didnt use NOKIA API for my MIDlet. And can anyone help me where i could find out the meaning of the Status = -191 and how to make it work ??
I also have tried to test it on real device using NOKIA 7650, and i couldnt make a network connection too. But it work fine on NOKIA 3530 is it because of the Symbian OS or something else?
I really need help on this..
Thanx B4
Regards,
Bayu

When running on your device, you are trying to connect to a web server to localhost = Nokia device.
I suppose you don't have a web server running onto your device.
The solution might be :
- make your server ip (or address) available via internet and then try to make the connection
- or, make your server to be a modem like server, enabling your phone to establish a connection to it, but don't forget to describe to route like table.
- find an already internet available server on which you can set up your servlet
Good Look.

Problem in executing MIDlet on Actual Device

Below is the program i got from net, this is executing fine in the emulator but when I ported the application to actual device i.e. Nokia 7610, data was not fetched from the given URL, neither i got any exception nor error.
I have WAP connection enabled on my mobile and also I was able to browse the same URL from the default browser that was there in the mobile.
J2ME: The Complete Reference
James Keogh
Publisher: McGraw-Hill
ISBN 0072227109
// jad file (Please verify the jar size first)
MIDlet-Name: httpconnection
MIDlet-Version: 1.0
MIDlet-Vendor: MyCompany
MIDlet-Jar-URL: httpconnection.jar
MIDlet-1: httpconnection, , httpconnection
MicroEdition-Configuration: CLDC-1.0
MicroEdition-Profile: MIDP-1.0
MIDlet-JAR-SIZE: 100
import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
import javax.microedition.io.*;
import java.io.*;
public class httpconnection extends MIDlet implements CommandListener {
private Command exit, start;
private Display display;
private Form form;
public httpconnection ()
display = Display.getDisplay(this);
exit = new Command("Exit", Command.EXIT, 1);
start = new Command("Start", Command.OK, 1);
form = new Form("Http Con");
form.addCommand(exit);
form.addCommand(start);
form.setCommandListener(this);
public void startApp()
display.setCurrent(form);
public void pauseApp()
public void destroyApp(boolean unconditional)
public void commandAction(Command command, Displayable displayable)
if (command == exit)
form=null;
display.setCurrent(null);
display=null;
destroyApp(false);
else if (command == start)
HttpConnection connection = null;
InputStream inputstream = null;
try
connection = (HttpConnection) Connector.open("http://www.someURL.com");
//HTTP Request
connection.setRequestMethod(HttpConnection.GET);
connection.setRequestProperty("Content-Type","//text plain");
connection.setRequestProperty("Connection", "close");
// HTTP Response
System.out.println("Status Line Code: " + connection.getResponseCode());
System.out.println("Status Line Message: " + connection.getResponseMessage());
if (connection.getResponseCode() == HttpConnection.HTTP_OK)
System.out.println(
connection.getHeaderField(0)+ " " + connection.getHeaderFieldKey(0));
System.out.println(
"Header Field Date: " + connection.getHeaderField("date"));
String str;
inputstream = connection.openInputStream();
int length = (int) connection.getLength();
if (length != -1)
byte incomingData[] = new byte[length];
inputstream.read(incomingData);
str = new String(incomingData);
else
ByteArrayOutputStream bytestream =
new ByteArrayOutputStream();
int ch;
while ((ch = inputstream.read()) != -1)
bytestream.write(ch);
str = new String(bytestream.toByteArray());
bytestream.close();
form.append(str);
System.out.println(str);
connection.close();
catch(IOException error)
System.out.println("Caught IOException: " + error.toString());
finally
if (inputstream!= null)
try
inputstream.close();
catch( Exception error)
/*log error*/ }
if (connection != null)
try
connection.close();
catch( Exception error)
/*log error*/
Please help me out what are the things I have to do to run this MIDlet on my Nokia 7610.
Thanks in advance.

You ever find an answer? I have an LG VX5200 phone which is supposed to support Java. But aside from downloading Java apps from other sites I'm trying to figure out which folder on the phone's filesystem you place the file. With BitPIM and QPST you can view the phone's filesystem. But as yet to find either a folder that works or combination of settings to get it to show up on the phone list of apps.
I had hoped that maybe someone had downloaded a game from a site and then looked at the phone to see where and how it's stored. I can't from where I'm at.
Michael

Error allocating HTTP/WSP connection

Our midlet interacts with the Servlet with HttpConnecction, sends data to the Servlet and receive the Servlet response.
Midlet is running correctly on Siemens CX75 Emulator and default java emulators. (Netbeans IDE) And when we testedt it on the real mobile device(Sony Ericsson) it operated correctly.
But when we tried it on the S75 emulator, and Siemens S75 real device, we faced that it can not connect to the Servlet. We receive "java.io.IOException: Error allocating HTTP/WSP connection� error message. It seems that the application can not open the HttpConnection so Midlet can not interact with the Servlet.
the error's full stack is;
java.io.IOException: Error allocating HTTP/WSP connection
- com.siemens.mp.io.wsp.WspConnection.sendRequest(), bci=208
- com.sun.midp.io.j2me.http.HttpConnection.openInputStream(), bci=20
- MobileTSP.sendData(), bci=8
- MobileTSP.ReceiveData(), bci=46
- MobileTSP$1.run(), bci=20
Can't receive any data
We use Thread that handles the network connection (HttpConnection). How can it be, an application that runs correctly in the emulator which can not run in the real phone and other emulators?
Thanks...

Welcome to the world of MIDP development.
Once we find a problem with a specific phone we apply a different build process depending on what phone were using. (the work around is applied only to the affected phone).
(Sorry i cant be of any real help)

Unable To Create MIDlet Null

hi all!
i am trying to run a simple midlet code and am egtting the error:
Unable To Create MIDlet Null
java.lang.NullPointerException
     at com.sun.midp.midlet.MIDletState.createMIDlet(+14)
     at com.sun.midp.midlet.Selector.run(+22)
I have tried to find out the solution but all my efforts have been in vain!
anybody who can help me please reply to my query as soon as possible!
your guidance will be appreciated!
The code is as follows:
package example.MethodTimes;
import javax.microedition.midlet.*;
* An example MIDlet runs a simple timing test
* When it is started by the application management software it will
* create a separate thread to do the test.
* When it finishes it will notify the application management software
* it is done.
* Refer to the startApp, pauseApp, and destroyApp
* methods so see how it handles each requested transition.
public class MethodTimes extends MIDlet implements Runnable {
// The state for the timing thread.
Thread thread;
* Start creates the thread to do the timing.
* It should return immediately to keep the dispatcher
* from hanging.
public void startApp() {
thread = new Thread(this);
thread.start();
* Pause signals the thread to stop by clearing the thread field.
* If stopped before done with the iterations it will
* be restarted from scratch later.
public void pauseApp() {
thread = null;
* Destroy must cleanup everything. The thread is signaled
* to stop and no result is produced.
public void destroyApp(boolean unconditional) {
thread = null;
     public void exitApp() {
destroyApp(true);
* Run the timing test, measure how long it takes to
* call a empty method 1000 times.
* Terminate early if the current thread is no longer
* the thread from the
public void run() {
Thread curr = Thread.currentThread(); // Remember which thread is current
long start = System.currentTimeMillis();
for (int i = 0; i < 1000000 && thread == curr; i++) {
empty();
long end = System.currentTimeMillis();
// Check if timing was aborted, if so just exit
// The rest of the application has already become quiescent.
if (thread != curr) {
return;
long millis = end - start;
// Reporting the elapsed time is outside the scope of this example.
// All done cleanup and quit
// destroyApp(true);
//notifyDestroyed();
          exitApp();
* An Empty method.
void empty() {
Thanks!!

that is because the other projects created a package of its own. Thats no problem and not required for execution.
You have to do
1) create in your project's src directory a subdirectory called "examples" (if you want to use the package)
2) in this subdir (./src/examples/) you have to put the MethodTimes.java file which contains the code from above with the "package examples;" statement.
3) run the WTKs build and afterwards the run
This should work. If not, be plz more precisely on whats not working.
And the WTK 2.1 should be no problem at all since I used it too.
hth
Kay

JAva ME SDK 3.0 Fatal Error : 123

Hi,
i have a very strange error when running my midlet inside the emulator of SDK 3.0
This midlet runs fine under SDK 2.5, and under Nokia emulator but in SDK 3.0 I have an almost silent crash of the emulator. The only message the console is giving me is
Fatal Error : 123
I have no idea what this is supposed to mean.
Can anybody point me to how I could debug this and to what might be the cause of this error ?
Many thanks in advance

Please check device.properties file in c:\Documents and settings\<user>\javame-sdk\3.0\work\<device_id>\device.properties.
Check whether "profiler.enabled" is true / false.
I faced same if profiler is enabled.
Works for me if "profiler.enabled" is set to false.
-Surendhar

Emulator runtime error - java.lang.IllegalAccessException

Hi
Im working through some example code, and when i build, everything is fine, with no errors, however when i run in the emulator, even though at this moment the program actually does nothing, its just a skeleton, i get the following error:
Unable to create MIDlet MyC
java.lang.IllegalAccessException
at com.sun.midp.midlet.MIDletState.createMIDlet(MIDletState.java:148)
at com.sun.midp.midlet.Selector.run(Selector.java:151)
For hours, i have been pondering over the code, but the answer eludes me as to why i get this error
Here is the main midlet:
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.lcdui.game.*;
public class my extends MIDlet implements CommandListener {
private MyC canvas;
public void startApp() {
if (canvas == null) {
canvas = new MyC(Display.getDisplay(this));
Command exitCommand = new Command("Exit", Command.EXIT, 0);
canvas.addCommand(exitCommand);
canvas.setCommandListener(this);
// Start up the canvas
canvas.start();
public void pauseApp() {}
public void destroyApp(boolean unconditional) {
canvas.stop();
public void commandAction(Command c, Displayable s) {
if (c.getCommandType() == Command.EXIT) {
destroyApp(true);
notifyDestroyed();
here is the class it uses:
import javax.microedition.lcdui.*;
import javax.microedition.lcdui.game.*;
import java.util.*;
import java.io.*;
public class MyC extends GameCanvas implements Runnable
private Display display;
private Sprite playerSprite;
private boolean sleeping;
private long framedelay;
public MyC(Display d)
super(true);
display = d;
framedelay = 33;
public void start()
display.setCurrent(this);
try
playerSprite = new Sprite(Image.createImage("/player.png"),12,12);
catch (IOException e){}
sleeping = false;
Thread t = new Thread(this);
t.start();
public void stop()
public void run()
Graphics g = getGraphics();
while (!sleeping)
update();
draw(g);
try
Thread.sleep(framedelay);
catch (InterruptedException ie) {}
private void update()
return;
private void draw(Graphics g)
playerSprite.paint(g);
flushGraphics();
}

im using j2me, and yes, i have gone straight for
mobile phone midlet programming. That isn't going to be easy.
When i remove the
detail at the end of the constructor, the code wont
exectute at all. By looking at the code i presented
here, is there anything noticeable as to why i keep
getting this error?"Won't execute" doesn't tell me anything.
Removing the parameter means that you need to do other things to the code because there will be undefined items.
If you are copying code exactly as it appears in a tutorial then you need to be aware that you might be working with different versions of code (java and midlet) and/or there might be mistakes in the tutorial. Of course if you modified the tutorial code then you could be introducing problems as well. You can look for other sources of documentation which might provide more information as to what a minimal set up looks like.

Source Not Found Error while Debugging

Hello,
I get annoying Errors while debugging a midlet. I reinstalled all programms an created a new midlet suite + midlet but the error is still there and the Midlet doesnt start.
i got Eclipse Version: 3.2.2, Eclipse ME 1.6.6, the newest WTK 2.5 and java.vm.version=1.6.0-b105.
I configured everything like www.eclipseme.org says it would be correct.
Running a Midlet works fine.
The bug opens an Helper.class file which says:
Class File Editor: Source not found: "The Jar of this classfile belongs to the container J2ME library [ Sun Java (TM) Wireless Toolkit 2.5 for CLDC/MediaControl]. To configure the source attachment, go directly to the corresponding configuration page (For example for JRE go to 'Installed JRE#s page in references).
Any clou how to fix this?? I need to debug my midlet :-/
THANKS!
Byby
pako

Hi,
I just had the same problem and navigated to this page here in hope for a solution...
However I've solved the problem now. On Eclipse, do the following.
1) Right-click on the added Jar-file (which is producing the problem)
2) On the popup-menu choose "Build Path" and "Configure Build Path..."
3) On the opening preference window, click the checkbox of the Jar
This is probably necessary because the jar has to be exported such that the simulator is able to execute it.
Greets,
Juri
http://juri-strumpflohner.blogspot.com

Error in httpconnection in MIDlet

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