Java on mobile phones

Hey! I must admit I am not a specialist (as a matter a fact - just the opposite).. I've got one question though.. I downloaded this software nav4all - a worldwide navigation sys for mobile phones.. but it turns out that some phones do not support it because supposedly their Java engine is different. Can someone explain please? what are the differences?

J2ME ("Java 2, Micro Edition") has a bunch of different "profiles" for different levels of devices, and those profiles themselves have different versions. The more recent versions are a major improvement over earlier versions. It's possible that this software uses some of the features of the later versions.
It's like trying to install software for Windows XP on a computer running Windows 3.1.
My phone has a menu item that says what versions of these java profiles are available. I suspect that your phone does as well, probably in the "settings" area. Take a look, if it's there you can compare it against the requirements data for nav4all.

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I need to know how to design a java program to java
supported mobile phone and how to install it on
mobile phone? also i need to know how to create a
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http://java.sun.com/docs/books/tutorial/deployment/jar/index.html

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regards,
prakash

Hi,
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Hi,
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How can we implement a j2me application on mobile phone

Hello to All
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Hello.
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null

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CLDC 1.1
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Actually it is working on my phone now.
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import java.io.*;
import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
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Form WelcomeForm = new Form("AtmosMIDlet");
StringItem WelcomeMes = new StringItem(null, "Please enter coordinates:");
TextField Longitude = new TextField("Longitude", "", 3, TextField.NUMERIC);
TextField Lattitude = new TextField("Lattitude", "", 3, TextField.NUMERIC);
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try
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WelcomeForm.append(logo);
catch (java.io.IOException x)
throw new RuntimeException ("Image not found");
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public void commandAction(Command c, Displayable s)
notifyDestroyed();
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C:\WTK25\apps\AtmosSpec\src\AtmosMIDlet.java:19: cannot find symbol
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location: class javax.microedition.lcdui.ImageItem
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^
1 error
com.sun.kvem.ktools.ExecutionException
Build failed
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How to invoke Java file into Mobile phone

hi
I have one java file (as servlet to display WML content on mobile phone) but i don't know how to invoke it into mobile phone . Can you help me ?
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Send short message from Java application on mobile phone to server; http

Hello!
My question is: can I send short message from Java application on mobile phone to server - with the use of SMS (WMA) or http connection?
I found this topic http://forums.sun.com/thread.jspa?threadID=5405431 about: "how to send data from midlet to servlet using doPost method".
There is also such topic http://forums.sun.com/thread.jspa?threadID=5408046&tstart=0 about: "CLDC and MIDP - sending SMS to server -> Wireless Messaging API (WMA)".
Please, kindly help me.
Code from the topic mentioned above, edited by me so that it can be read easily:
//http://forums.sun.com/thread.jspa?threadID=5405431
//CLDC and MIDP - Re: how to send data from midlet to servlet using doPost method
I want to know how to pass the values .
for examples : this is what i wrote for doGet
String url = setting.getUrl().toString()"/testProServlet/servlet/UpdateCompanyProfile?userId="+loggedInUserId"&svComp="saveCompHex;
userId and svComp has the data which is very long so i wanted to use doPost.
Now i dont know how to do it.
This is what i have done in doGet (midlet)
public void saveCompanyProfile(String saveComp,int flag,String blankFieldNm)
     System.out.println("flag===" flag);
     if (flag==1)
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     else
          String saveCompHex = helper.encodeHexString(saveComp);
          // String saveCompHex =saveComp;
          HttpConnection httpConn = null;
          serverSettings setting = new serverSettings();
          System.out.println("saveCompHex===" saveCompHex);
          String url = setting.getUrl().toString()"/testProServlet/servlet/UpdateCompanyProfile?userId="loggedInUserId"&svComp="saveCompHex;
          System.out.println("url of save company profile:: "+url);
          InputStream is = null;
          OutputStream os = null;
          try {
               // Open an HTTP Connection object
               httpConn = (HttpConnection) Connector.open(url);
               System.out.println("urlMidlet1 save edited company data===::" url.length());
               // Setup HTTP Request
               httpConn.setRequestMethod(HttpConnection.POST);
               httpConn.setRequestProperty("User-Agent","Profile/MIDP-1.0 Confirguration/CLDC-1.0");
               System.out.println("urlMidlet2===" url);
               int respCode = httpConn.getResponseCode();
               System.out.println("respCode edit company profile=====" respCode);
               if (respCode == httpConn.HTTP_OK)
                    StringBuffer sb = new StringBuffer();
                    os = httpConn.openOutputStream();
                    is = httpConn.openDataInputStream();
                    int chr;
                    while ((chr = is.read()) != -1)
                         sb.append((char) chr);
                    String sResultSvCompanyProfile= sb.toString();
                    System.out.println("+++++++++++++Company sResult+++++++++++++==="sResultSvCompanyProfile);
                    if (resultViewCompanyProfile.trim().equals(""))
                         System.out.println("++++++++++++++If++++++++++++++SaveCompanyProfile===");
                         displayAlert("Login Incorrect","Username and Password incorrect", AlertType.ERROR, mainForm, true);
                    else
                         System.out.println("++++++++++++++Else++++++++++++++SaveCompanyProfile===");
                         //companyProfile();
                         displayAlert1("Information","Company Profile edited successfully", AlertType.INFO, profileMenuScreen, true);
               else
                    System.out.println("Error in opening HTTP Connection. Error#" respCode);
                    //the line below divided into two lines because it was too long
                    displayAlert("Connection Failed","Cannot connect to server, please contact the Administrator.",
                    AlertType.ERROR, mainForm, false);
          catch(IOException e)
               e.getMessage();
          finally {
               if(is!= null)
                    try
                         is.close();
                    catch (IOException e)
                         // TODO Auto-generated catch block
                         e.printStackTrace();
                         displayAlert("Connection Failed","Cannot connect to server, please contact the Administrator.",
                         AlertType.ERROR, mainForm, false);
               if(os != null)
                    try
                         os.close();
                    catch (IOException e)
                         // TODO Auto-generated catch block
                         e.printStackTrace();
                         displayAlert("Connection Failed","Cannot connect to server, please contact the Administrator.",
                         AlertType.ERROR, mainForm, false);
               if(httpConn != null)
                    try
                         httpConn.close();
                    catch (IOException e)
                         // TODO Auto-generated catch block
                         e.printStackTrace();
                         displayAlert("Connection Failed","Cannot connect to server, please contact the Administrator.",
                         AlertType.ERROR, mainForm, false);
          } //end finally
     } //end else (?)
} //end savecompany

hi,
SMS API(WMA) is an optional package. It is not a MIDP1.0 or MIDP2.0 api's.
There are phones which has WMA api with MIDP1.0 support .... Nokia 3650
Seimens has some phone with their own api's to send sms.Check out seimens site for more info
BTW, What do you mean buy sending SMS to Server????
If you want to send message to server you can do it with Http.
HTH
phani

BT and Java - Btl2Cap Connection (Mobile phone and Digital Pen)

Hi!
First a short Introduction:
For a project I have to stream data from Maxell Penit DP201(4.1) to a mobile device (over a midlet). Data Connection is built up over Bluetooth.
My Questions are: Is btl2cap the right method for connecting digital pen and mobile phone?
If yes, is the btl2cap string correct?
The pens device adress is 00-07-CF-56-05-5D
Does anyone know a sample application like this I want to program?
Structure;
package /
Midlet
Class extending thread
Here's the code:
public void run() {
    //Bluetooth
    //String connString = "btspp://0007808303AA:1;master=false";
    String connString = "btl2cap://localhost:0007cf56055d;ReceiveMTU=512;TransmitMTU=512";
    System.out.println(connString);
    try {
            LocalDevice local = LocalDevice.getLocalDevice( ) ;
// build ServiceRecord
            local.setDiscoverable(DiscoveryAgent.GIAC);
L2CAPConnectionNotifier service = (L2CAPConnectionNotifier)
Connector.open(connString);
ServiceRecord sr = local.getRecord(service);
// accept Connection
L2CAPConnection connection = (L2CAPConnection ) service.acceptAndOpen( );
        } catch (Exception e) {
            e.printStackTrace();
        }Thanks to all who can help me to reach the next step in my project.
Best regards

Hi,
The reason for the compilation error is that the IDE is not able to find the jar file where bluetooth api is packed. try to put the jar file in lib directory of the project. Some IDE generates class files even though there are some compilation errors in java file.
So it is better to resolve compilation errors before putting it in the device.
The reason why the app freezes in the device is that you have not used a seperate thread to do the inquiry, try to use a thread where the inquiry will be done so that the apps main thread will respond to the user input.
Hope this help you.

Java on mobile phones

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