Setting IconImage on a few hundred JFrames at once

Question

Hi,
I have an application with a few hundred classes and also a large amount of JFrames spread over those classes.
Now I have to have a custom IconImage displayed in the upper left corner of the JFrames.
As of the Swing Tutorial I know that with
//Ask for window decorations provided by the look and feel.
JFrame.setDefaultLookAndFeelDecorated(true);
//Create the frame.
JFrame frame = new JFrame("A window");
//Set the frame icon to an image loaded from a file.
frame.setIconImage(new ImageIcon(imgURL).getImage());I can set the IconImage of one particular JFrame, but that would mean that I would have to do that a for all of those hundred JFrames in the app.
Is there a simpler way, to set the custom IconImage only once?
Thx!

Answer 1

BoBear2681 wrote:
rh---gnt wrote:
woefully inefficient ? I agree it's inneficient, but ImageIcon itself does not really cost much. It's not a component after all. Maybe calling ImageIcon "inefficient" is a slight exaggeration, but wasteful is indeed a good description, if all you want is an Image. Like Darryl said, if you want an Image, why not just use ImageIO.read() instead of creating an unnecessary object?Yes I was just pointing out the exaggeration. ImageIO.read() is fine.
And I was also pointing out some other performance related tips. Having an image in the format ready to render to screen is where you will see much greater performance improvements.
>
One other thing to be aware of is that ImageIcon uses the toolkit to load the image, this process is asynchronous.Toolkit can load images asynchronously, yes, but ImageIcon waits for the Image to be loaded. That way it can publish its width and height properly. See the ImageIcon.loadImage() method.Yep, good point.
neblaz:
Maybe your 100 screens is not the best design.
However a simple solution to your problem is to subclass JFrame as you suggest.