Help with displaying image received from socket on Canvas

Dear programmers
I know that I'm pestering you lot for a lot of help but I just got one tiny problem which I just can't get over.
I'm developing a remote desktop application which uses an applet as it's client and I need help in displaying the image.
When a connection is made to the server, it continuously takes screenshots, converts them to jpg and then send them to the client applet via socket communication. I've got the the server doing this in a for(;;) loop and I've tested the communication and all seems to be working fine. However the applet is causing some issues such as displaying "loading applet" until I stop the server and then the 1st screenshot is displayed. Is there a way to modify the following code so that it displays the current image onto a canvas while the next image is being downloaded and then replace the original image with the one which has just been downloaded. All this needs to be done with as little flicker as possible.
for(;;)
    filename = dis.readUTF();
    fileSize = dis.readInt();
    fileInBuffer = new byte[fileSize];
    dis.readFully(fileInBuffer, 0, fileSize-1);
    //Create an image from the byte array
    img = Toolkit.getDefaultToolkit().createImage(fileInBuffer);
    //Create a MyCanvas object and add the canvas to the applet
    canvas = new IRDPCanvas(img, this);
    canvas.addMouseListener(this);
    canvas.addKeyListener(this);
    add(canvas);
}

Anyone?

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