Re: sending and receiving packets

lando <""lando\"@(lando)">
Sun, 05 Aug 2007 23:21:59 +0200
lando ha scritto:

Knute Johnson ha scritto:

lando wrote:

lando ha scritto:

Knute Johnson ha scritto:

blah bah7 wrote:

I'm trying to make a chat program and i don't know how to send the
strings between the chat client and server, can anyone help?

I have a very simplified chat Applet and server posted on my website.

I'm trying to learn java through examples....
I've compiled and launched "ImageObserverExample " and I get the
error below : no protocol.
I've submitted the argument in any form...Where is the problem ?
Many thanks.

java ImageObserverExample
mio http=:// no protocol:

I' ve seen this my problem...the extra "=" ....after "http" .
but also with the right http adress the program stops without
message ...

It worked fine for me with the URL above. Maybe you should give me a
little more information. Can you reach the URL with a browser? Does
the JFrame show up?

I can see the image with my Firefox ....and JFrame doesn't show up .
It works fine if I clic it in your site....
My O S is linux....

I've traced with System.out.println and these steps are ok >>>>

java ImageObserverExample

my sun.awt.image.ToolkitImage@1270b73
  back from ImageObserverExample
  setvisible done...but NO frame

Your code with the added System.out.println statements.

public class ImageObserverExample extends JPanel {
     Image image;

     public ImageObserverExample(String urlString) {
         try {

System.out.println("my " + urlString);
             URL url = new URL(urlString);

             // use createImage instead of getImage to avoid caching
             image = getToolkit().createImage(url);

System.out.println("my " + image);

         } catch (Exception e) {


     public void paintComponent(Graphics g) {

     public static void main(final String[] args) {

         Runnable r = new Runnable() {
             public void run() {
                 JFrame f = new JFrame("ImageObserverExample");
                 ImageObserverExample ioe = new

System.out.println(" back from ImageObserverExample ");


System.out.println(" setvisible done...but NO frame ");


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