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FileConnection error in j2me

I m getting problem
this is j2me program
i m getting this error while exe.
"java.lang.IllegalArgumentException: Root is not accessible"

the program is:
i m getting error in the first line of function "startConn()"

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.pim.*;

public class FileC extends MIDlet implements CommandListener
private Command exit, start;
private Display display;
private Form form;

public FileC ()
display = Display.getDisplay(this);
exit = new Command("Exit", Command.EXIT, 1);
start = new Command("Start", Command.EXIT, 1);
form = new Form("Write To File");

public void startApp() <------------------ error

public void pauseApp()
public void destroyApp(boolean unconditional)

public void commandAction(Command c,Displayable d)

public void startConn()

FileConnection connection = (FileConnection)"file:///C:/myfile.txt" );
InputStream out = connection.openInputStream();
InputStreamReader output = new InputStreamReader( out );
out.println(output );
Alert a=new Alert("hello","I m fine",null,null);
catch(Exception e)
System.out.println("Hello "+e);


Posted by on

  • vrusha_App Jan 16, 2009

    I have same problem I have written same code, only difference is I used following code fir connection.
    FileConnection fc = (FileConnection)"file:///CFCard/");


5 Suggested Answers



Posted on Feb 23, 2008


its runing the didnt has any problem

Posted on Aug 12, 2008

  • 2 Answers

SOURCE: please explain the working of this code

It's a Java http server (webserver) that serves random "prices" if they match a search string.

Well here is an explaination:

private static String[] symbols = {"DELL", "INTC", "MSFT", "ORCL", "SUNW"};
These are search strings

private static Random rnd = new Random();
This generates a random number

private static Charset cs = Charset.forName("UTF-8");
This is the charset that the http server uses

ServerSocketChannel server =;
Create a new server

server.socket().bind(new InetSocketAddress(8055));
Bind the http server to port 8055

The rest is handling the request and processing it

But here:
if(Arrays.binarySearch(symbols, symbol) >= 0)
response = "Price is " + (1000 + rnd.nextInt(9000)) / 100.0;
response = "Price not available";
channel.write(cs.encode("HTTP/1.0 200 OK "));
channel.write(cs.encode("Content-type: text/plain "));
It sees if the string input matchs: DELL INTC MSFT ORCL SUNW.

(private static String[] symbols = {"DELL", "INTC", "MSFT", "ORCL", "SUNW"};)
If so, it gives a price based on a random number.
response = "Price is " + (1000 + rnd.nextInt(9000)) / 100.0;)
Or else
It says "price not available"
then it gives a html header to end the error message.

Hope I helped you :)
Gook luck

Posted on Nov 26, 2008

  • 32 Answers

SOURCE: I am an MCA student.To read the file from PC to handheld device

you might need to run a anti-virus through your computer. it might have a bug. :) hope this helps!!

Posted on May 20, 2009

  • 323 Answers

SOURCE: jnlp code for the java program

From command prompt: You can also launch an application from a command prompt by typing javaws jnlp_url where jnlp_url is a url to the jnlp file of the application. Go to Start > Run > type "cmd". A command prompt window will appear. Type "javaws url_of_jnlp"

Posted on Jun 12, 2009

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