Loading an image from an arbitrary URL without using an ImageIcon

Interesting results:

When I run this test code (the names have been changed to protect the innocent):

package graphicstest;

import javax.swing.*;

import java.net.*;

import javax.imageio.*;

import java.awt.image.*;

/**

*

Title:

*

*

Description:

*

*

Copyright: Copyright (c) 2007

*

*

Company:

*

* @author not attributable

* @version 1.0

*/

public class Foo

extends JFrame {

static ImageIcon ii;

public Foo() {

setSize(200,200);

try {

System.out.println("2=aborted; 8=complete; 4=errored; 1=loading");

ii = new ImageIcon(new URL("http://intranet/part?FOO.JPG"));

System.out.println("image load status: " + ii.getImageLoadStatus());

getContentPane().add(new JLabel(ii));

System.out.println("image load status: " + ii.getImageLoadStatus());

}catch(Throwable t) {t.printStackTrace();}

}

public static void main(String args[]) {

Foo foo = new Foo();

foo.setVisible(true);

if (ii.getImageLoadStatus() == 4) {

try {

BufferedImage bi = ImageIO.read(new URL(

"http://intranet/part?FOO.JPG"));

ii.setImage(bi);

foo.validate();

foo.repaint();

} catch(Throwable t) {t.printStackTrace();};

}

}

}

. . . from a box that's not on the VPN, it blows up at the ImageIO.read() call (not unexpectedly). But if I run it from a box that's on the VPN, and able to access the URL, then it returns just fine from the ImageIO.read(), and I get a null pointer exception at the call to setImage().

Clearly, this is trying to tell me SOMETHING, but I don't quite know WHAT.

--

JHHL

hbquikcomjamesla at 2007-7-12 18:28:36 >