Native interfaces for MIDP applications.

Hi,
I am wondering whether there is any support to access Native applications from a MIDP application. I read somewhere that it is NOT possible in MIDP but may be possible in other profiles.
But there are ways to extend the MIDP to support native interfaces. Does CLDC support Native interfaces at all?
All answers are very much appreciated?
Thanks,
Ganesh.

Hi,
I'm really sorry to say I don't have an answer to your question, actually I'm looking for answer to the exact same question and I haven't been able to find a single encouraging answer.
So the reason I write is to ask you, PLEASE!, if you find an answer reply to this post.
Thanks and luck

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Use of Class Vs Interface for defining application constants

I want to use some constants through out the application. For that I found two ways to do that as given below
1. We can define constants in a class as
public class ConstantClass {
public static final String applConstant = "Some Constant";
and use it ConstantClass.applConstant whereever needed
Or
2. We can define an interface as
public interface IConstantInterface {
String applConstant = "Some Constant";
and use it IConstantInterface.applConstant
Can you pls explain which is the best method to be used in the application and why?
Thanks in advance.

Hmmm - that would imply that if I have a reference a
static final variable in a 3rd party class, then
compile my class to a .class file, then the 3rd party
changes their class file, that my .class file would
not contain the correct values.Yep, that is what would happen
I doubt this. I haven't read the compiler specs, but
my assumption would be that compile time optimizations
such as this only apply to constants within a single
.class file.You don't need the compiler specs, you just need a compiler.
Compile the two classes below, and run Main. Your output should look like:
3
Hello
5
Hooky
Then delete the Constants.class file and run Main again and see what happens.
== Constants.java ==
public class Constants {
public static final int INT_CONSTANT = 3;
public static final String STRING_CONSTANT = "Hello";
public static int i = 5;
public static String s = "Hooky";
== End Constants.java ==
== Main.java ==
public class Main {
public static void main(String[] args) {
System.out.println(Constants.INT_CONSTANT);
System.out.println(Constants.STRING_CONSTANT);
System.out.println(Constants.i);
System.out.println(Constants.s);
== End Main.java ==
In case you are wondering:
java version "1.4.1_02"
OS: Solaris 8
Arch: Sparc
I get the same thing on windows with 1.4 and 1.3
and on FreeBSD with diablo jdk 1.3

Need HELP for MIDP application.

i was having problems in row 45-70 and from row 88-105 which im not so sure weither i write it correctly or not.
i wanted to do an application using MIDP where user can view question and chose the answer using List.
The question can be get from database and the answer chose are needed to be written in text file.
======================================================import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
public class NotSoSimpleFace extends MIDlet implements CommandListener
private Display display;
private Command exit;
private Command next;
private Command finish;
private List list;
private int QNo=1;
public NotSoSimpleFace()
    display = Display.getDisplay(this);
public void startApp()
      Question(QNo);
public void pauseApp()
public void destroyApp(boolean unconditional)
     notifyDestroyed();
public void commandAction(Command command, Displayable Displayable)
    if (command == next)
     boolean choice[] = new boolean[list.size()];
     list.getSelectedFlags(choice);
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             if (choice[x])
               System.out.println(list.getString(x));
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            //..."//root1/answer.txt;append=true", Connector.WRITE
             OutputConnection connection = (OutputConnection)
             Connector.open("file:///root1/answer.txt; append=true" Connector.WRITE );
             OutputStream out = connection.openOutputStream();
             PrintStream output = new PrintStream( out );
             output.println( "Answer 1 is:" + list.append(x));
             output.println( "Answer 2 is:" + list.append(x));
             output.println( "Answer 3 is:" + list.append(x));
             output.println( "Answer 4 is:" + list.append(x));
             out.close();
             connection.close();
               Alert alert = new Alert("Completed", "Data Written", null, null);
             alert.setTimeout(Alert.FOREVER);
             alert.setType(AlertType.ERROR);
             display.setCurrent(alert);
     QNo+=1;
     if (QNo <= 4) {
          Question(QNo);
     } else {
           destroyApp(true);
    else if (command == exit)
      destroyApp(true);
private void Question(int no)
          String url = "jdbc:odbc:MyODBC";
         Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
         Connection c = DriverManager.getConnection(url,"","");
         Statement s = c.createStatement();
         ResultSet rs = s.executeQuery ("select Question from Question");
         while (rs.next())
          FileOutputStream fout = new FileOutputStream("sample.txt");
         PrintStream myOutput = new PrintStream(fout);
    list = new List( myOutput.print(rs.getString(1) + "\t") + no, List.MULTIPLE);
    list.append("A", null);
    list.append("B", null);
    list.append("C", null);
    list.append("D", null);
    exit = new Command("Exit", Command.EXIT, 1);
    if (no == 4) {
      next = new Command("Finish", Command.EXIT, 2);
    } else {
      next = new Command("Next", Command.EXIT, 2);
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    list.addCommand(next);
    list.setCommandListener(this);
    display.setCurrent(list);
}

Ok, I haven't really worked much with files in J2ME and I haven't worked with MIDP 2.0 at all, but I'm fairly certain that there is no JDBC available in CLDC. If you're programming for a mobile phone then you can't use SQL. It's only available for CDC
You're on the right track with the Connector; explore that further.
But not every phone has a filesystem; keep that in mind. Some only expose an RMS for data storage to MIDlets.
Message was edited by:
nogoodatcoding

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can i use htmlb in place of html?
if yes , what should i do?.
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[email protected]

Hello,
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Second, you can use serial, isb, and infrared to communicate between your PDA and hardware. I am including links to our online Knowledge Bases that discuss these options in more detail.
http://digital.ni.com/public.nsf/websearch/11E3697FAC8A0A3786256D44007911BB?OpenDocument
http://digital.ni.com/public.nsf/websearch/15987C8CB752EAD786256DC20070B433?OpenDocument
http://forums.ni.com/ni/board/message?board.id=140&message.id=6288&requireLogin=False
http://forums.ni.com/ni/board/message?board.id=140&message.id=9153&requireLogin=False
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Caroline
National Instruments
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Hi,
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Thanks
Sunil.

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Sushama

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Hello portal experts,
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Can't sync Digi 002 as an interface for Logic Pro 7

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Tony P.M. wrote:
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Hello Waldemar,
Thank you for contacting National Instruments. I would like to apologize for the delay in responding to your support request. We have been on holiday for the past few days due to Thanksgiving.
From the information you have provided here, it sounds like you are on the right track with getting your application up and running with a chinese font interface. I would like to point out an extremely helpful KnowledgeBase that you might use for reference now and any other time you need to localize your user interface:
http://digital.ni.com/public.nsf/websearch/5987FCAFE3FBE8B98625693B0052EBD9?OpenDocument
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http://search.microsoft.com/search/results.aspx?View=msdn&st=a&qu=mbcs&c=4&s=2
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http://zone.ni.com/devzone/conceptd.nsf/2d17d611efb58b22862567a9006ffe76/6d94f90fc9b93aad862568a7007cd4c0?OpenDocument
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I hope this helps! Let me know if there is anything else I can help with or clarify. Have a great day!
Liz Fausak
National Instruments

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Native interfaces for MIDP applications.

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