Can't fix this code

Question

im still new to the j2me thing , so guys i need ur help if you plz , i should add a try block but its not working, waiting for ur replies .
import java.util.*;
import java.io.*;
import javax.microedition.io.*;
import javax.microedition.io.file.*;
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
public class FileTransfere extends MIDlet implements CommandListener {
private String currDirName = "fileTransfere/";
public DatagramConnection dd = (DatagramConnection)Connector.open("datagram://:1234");
public Vector ReqFiles = new Vector();
public Vector sendFiles = new Vector();
public Vector otherFiles = new Vector();
private Command exit = new Command("Exit", Command.EXIT, 3);
public void startApp()
try {
showCurrDir();
} catch (SecurityException e) {
Alert alert = new Alert("Error",
"You do not have permission to access the file system!",
null, AlertType.ERROR);
alert.setTimeout(Alert.FOREVER);
Form form = new Form("Cannot access FileConnection");
form.append(new StringItem(null,
"You cannot run this MIDlet with the current permissions. "
+ "Sign the MIDlet suite, or run it in a different security domain"));
form.addCommand(exit);
form.setCommandListener(this);
Display.getDisplay(this).setCurrent(alert, form);
} catch (Exception e) {
e.printStackTrace();
public void pauseApp()
public void destroyApp(boolean cond)
notifyDestroyed();
public void commandAction(Command c, Displayable d)
     if (c == exit) {
destroyApp(false);
void showCurrDir()
Enumeration e;
FileConnection currDir = null;
Form browser = new Form("files:");
try {
if ("/".equals(currDirName)) {
e = FileSystemRegistry.listRoots();
System.out.println(currDirName);
} else {
currDir = (FileConnection)Connector.open("file://localhost/" + currDirName);
e = currDir.list();
// not root - draw UP_DIRECTORY
String sendMe = "FILES\n";
String filenames = "";
iny count = 0;
while (e.hasMoreElements()) {
String fileName = (String)e.nextElement();
System.out.println(fileName);
browser.append(fileName);
FileConnection file = (FileConnection)Connector.open("file://localhost/" + currDirName + fileName);
if(!file.isDirectory())
     filenames += fileName +"\n";
     count ++;
sendMe += count + "\n"+ fileNames;
try
     byte[] data = sendMe.getBytes();
     DatagramConnection dc = (DatagramConnection) Connector.open("datagram://127.0.0.1:2020");
          Datagram d = dc.newDatagram(data,data.length);//packet
                    dc.send(d);//send
catch(Exception e)
/* FileConnection wf = (FileConnection)Connector.open("file://localhost/root1/testfile.txt");
OutputStreamWriter osw = new OutputStreamWriter(wf.openOutputStream());
FileConnection file = (FileConnection)Connector.open("file://localhost/" + currDirName + fileName);
InputStreamReader isr = new InputStreamReader(file.openInputStream());
System.out.println("read: " + file.canRead());
System.out.println("write: " + file.canWrite());
System.out.println("directory: " + file.isDirectory());
System.out.println("file: " + !file.isDirectory());
System.out.println("Time: " + file.lastModified());
int ch = isr.read();
int counter = 0;
String s = "";
     while( ch != -1)
          if (counter == 1024)
               try
                    byte[] data = s.getBytes();
                    DatagramConnection dc = (DatagramConnection) Connector.open("datagram://127.0.0.1:2020");//socket
                    Datagram d = dc.newDatagram(data,data.length);//packet
                    dc.send(d);//send
                    counter = 0;
                    s = "";
               }catch(Exception e)
                    e.printStackTrace();
                    //send the packet & reset the counter
          counter ++;
          //osw.write(ch);
          //System.out.print((char)ch);
          s += (char)ch;
          ch = isr.read();
          isr.close();
          osw.close();
new Thread(new Runnable()
     public void run()
          for(;;){
          byte[] data = new byte[1024];
          Datagram recDG = dd.newDatagram(data,data.length);//packet
               dd.receive(recDG);//receive
               validatePacket(recDG);
).start();
catch (Exception ee)
public void validatePacket(Datagram re)
     byte[] bytes = re.getData();
     String line = new String();
     int ch;
     ByteArrayInputStream bais = new ByteArrayInputStream(bytes);
     ch = bais.read();
     while( ch != 10)
          line += (char)ch;
          ch = bais.read();     
     System.out.println(line);
     if(line.equals("FILES"))
          line = new String();
          ch = bais.read();
          while( ch != 10)
               line += (char)ch;
               ch = bais.read();     
          int nofs = Integer.parseInt(line);
          for(int i = 0; i<nofs;i++)
               line = new String();
               ch = bais.read();
               while( ch != 10)
                    line += (char)ch;
                    ch = bais.read();     
               FileConnection fc = (FileConnection)Connector.open("file://localhost/" + currDirName + line);
               otherFiles.addElement(line) ;
               if (!fc.exists())
                    ReqFiles.addElement(line) ;
          for(i = 0; i< ReqFiles.size(); i++)
               String sendMe = "I WANT FILE\n" + ReqFiles.elementAt(i)+"\n";
               try
     byte[] data = sendMe.getBytes();
     DatagramConnection dc = (DatagramConnection) Connector.open("datagram://127.0.0.1:2020");
          Datagram d = dc.newDatagram(data,data.length);//packet
                    dc.send(d);//send
catch(Exception e)
     if (line.equals("YOUR FILE"))
          line = new String();
          ch = bais.read();
          while( ch != 10)
               line += (char)ch;
               ch = bais.read();     
          String filename = line;
          FileConnection fc = (FileConnection)Connector.open("file://localhost/" + currDirName + line);
          fc.create();
          OutputStreamWriter osw = new OutputStreamWriter(fc.openOutputStream());
          line = new String();
          ch = bais.read();
          while( ch != 10)
               line += (char)ch;
               ch = bais.read();     
               int nofs = Integer.parseInt(line);
          for(int i = 0; i<nofs;i++)
          {                                      // for start
               //line = new String();
               ch = bais.read();
               while( ch != 10)
               {                                        // while start
               //line += (char)ch;
               osw.write((char)ch);
                    ch = bais.read();     
               } // while end
                    osw.write((char)10);
     } // for end
     if (line.equals("I WANT FILE"))
          line = new String();
          ch = bais.read();
          while( ch != 10)
               line += (char)ch;
               ch = bais.read();     
          String filename = line;
          FileConnection fc = (FileConnection)Connector.open("file://localhost/" + currDirName + line);
          InputStreamReader isr = new InputStreamReader(fc.openInputStream());
          line = new String("");
          ch = isr.read();
          int nol = 0;
          while( ch != -1)
               while( ch != 10)
                    line += (char)ch;
                    ch = isr.read();     
               line += (ch)10;
               nol++;
          line = "YOUR FILE\n" + filename +"\n" + nol + "\n" + line;
          try
     byte[] data = line.getBytes();
     DatagramConnection dc = (DatagramConnection) Connector.open("datagram://127.0.0.1:2020");
          Datagram d = dc.newDatagram(data,data.length);//packet
                    dc.send(d);//send
catch(Exception e)
// FileConnection f = (FileConnection)Connector.open("file:///root1/testfile.txt");
//f.create(); //for files
//f.mkdir(); //for directories
//f.delete();// for deleting a filer or an empty directory
//f.exists() //check if file exsists ( returns boolean)
//Do not allow creating files/directories beside root
browser.addCommand(exit);
browser.setCommandListener(this);
if (currDir != null) {
currDir.close();
Display.getDisplay(this).setCurrent(browser);
} catch (IOException ioe) {
ioe.printStackTrace();

Answer 1

Come on... We can't answer question like this? At least try to put some effort in it, and tell us WHAT is not working, and what this midlet should do!
And, please, use the [  code ] tags! It makes things actually readable.
And finally, don't crosspost: http://forum.java.sun.com/thread.jspa?threadID=740079&tstart=0