runtime error during downloading images from server to mobile

[surja]

runtime error during downloading images from server to mobile
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Hi,
I have written a code to download images from a server end desktop,
but while running the code ,WTK is showing a runtime error " Create image from Byte array
Uncaught exception java/lang/IllegalArgumentException: ".
I cannot detect the necessary change I have to make to run my code succesfully.Please anyone can help me to solve this code


Code: ( java )

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.io.*;
import java.io.*;
import java.util.*;
import javax.microedition.io.HttpConnection;
 
public class DownloadImage extends MIDlet implements CommandListener
{
 private Command exit,start;
 public Display display;
 private Form form;
 private StringItem stars;
 
 public DownloadImage()
 {
   display = Display.getDisplay(this);
   exit = new Command("Exit",Command.EXIT,1);
   start = new Command("start",Command.SCREEN,1);
   form = new Form("Picture");
   form.addCommand(exit);
   form.addCommand(start);
   form.setCommandListener(this);
 
 }
 
 
 public void startApp() throws MIDletStateChangeException
 {
   //display.setCurrent(form);//
   if(display==null)
    display=Display.getDisplay(this);
     display.setCurrent(form);
     System.out.println("start");
 
     //Do network loading in separate thread
 
 
 }
 
 public void pauseApp()
 {
 }
 
 public void destroyApp(boolean unconditional)
 {
 }
 
 public void commandAction(Command command,Displayable displayable)
  {
   if(command == exit)
   {
    destroyApp(false);
    notifyDestroyed();
   }
    else if (command == start)
    {
        Form wform=new Form("picture1");
        display.setCurrent(wform);
        System.out.println("command");
 
        Thread t=new Thread()
        {
            public void run()
              {
                 connect();
                 System.out.println("connect");
               }
         };t.start();
 
     }
 
   }
   public void connect()
   {
     ContentConnection connection = null;
 
     //InputStream inputstream = null;
          Image image = null;
 
 
    try
 
      {
          System.out.println("connection");
    connection = (ContentConnection)Connector.open("http://172.24.182.155:8080/surja/logo.png");
          System.out.println("retreive");
     //InputStream inputstream = (InputStream)Connector.openInputStream(connection)    ;
          DataInputStream inputstream = connection.openDataInputStream();
 
        ByteArrayOutputStream bytearray = new ByteArrayOutputStream();
        int ch;
        while ((ch = inputstream.read()) != -1)
         {
             bytearray.write(ch);
             System.out.println("read");
          }
 
         byte imagearray[] = bytearray.toByteArray();
 
         //Create image from Byte array
            System.out.println("Create image from Byte array");
         image = image.createImage(imagearray,0,imagearray.length);    
         //form.append(image);
           System.out.println("Image created");
       }
       catch (IOException error)
       {
        Alert alert = new Alert("Error","Cannnot connect"+ error,null,null);
        alert.setTimeout(Alert.FOREVER);
        alert.setType(AlertType.ERROR);
        display.setCurrent(alert);
 
       }
    }
 
 
   //}
 }

i´m grateful for every hint and solution!
surja