Network - transfer byte array back to image problem

[Clawsy]

Hi,

I first convert the image on the server application in bytes:

//server
 public void sendImage(File file) throws IOException {

		ByteArrayOutputStream baos=new ByteArrayOutputStream(1000);
		BufferedImage img=ImageIO.read(new File(file.getAbsolutePath()));
		ImageIO.write(img, "jpg", baos);
		baos.flush();


        os.write(baos.toByteArray());// this is a "new DataOutputStream(clientSocket.getOutputStream());"
          System.out.println("Done! Length is:"+baos.toByteArray().length);

		baos.close();
}

Then my application freezes when trying to convert the bytes array back to image.

//client
public void receiveImage() throws IOException
   {

byte[] bytearray = new byte[4096];
is.readFully(bytearray);// "new DataInputStream(clientSocket.getInputStream());" here my app freezes. and i don't knwo array length. 
BufferedImage imag=ImageIO.read(new ByteArrayInputStream(bytearray));
ImageIO.write(imag, "jpg", new File("abc.jpg"));

this.setLayout(new FlowLayout());
this.add(new ImagePanel(imag));
this.validate();
   }

I probabily done something wrong... Is this a good aproach to transfer images fast?
Can someone help please?

[Clawsy]

Wow.... I finally made it myself.. after a hard time. So I better post it, for people who seek this too.

//sending image from server
 public void sendImage(File file) throws IOException {
  long len = file.length();
  byte[] byteArray = new byte[(int)len];
  try {
     FileInputStream fstream = new FileInputStream(file);

     fstream.read(byteArray);

             os.writeInt((int)len);//send the length
             os.write(byteArray, 0, (int)len);
             os.flush();
  } catch(Exception e){}

  System.out.println("Done! "+byteArray.length);
}

Now the client receives the byte array:

private BufferedImage img;
//cc = the main Frame of the application
//is = new DataInputStream(clientSocket.getInputStream());

                            int len = cc.is.readInt();
                           byte[] byteArray = new byte[len];
                           cc.is.readFully(byteArray);
//here you have it back
                            img=ImageIO.read(new ByteArrayInputStream(byteArray));;