Can anyone tell me how one creates or modifies a JPEG so that
Image.getProperty() will actually find properties which can be gotten?
I've tried adding a comment to a JPEG via GraphicConverter. I can
see the comment in a hex dump of the file, but Java seems
blissfully unaware of the comment being there. Just in case
"comment" wasn't the right property name to use, I looked at my
Image object in a debugger and I can see a member variable named
"properties" -- it's nothing but an empty Hashtable.
I've used a MediaTracker to make sure my image is fully loaded --
and since at the same point in the code I can paint the image into
a BufferedImage, I have confirmation the image is fully loaded and
rendered. The image byte data clearly contains my comment text, so
I know I'm loading the correct commented image.
The Java API docs talk about using a property named "comment" "to
store an optional comment which can be presented to the application
as a description of the image, its source, or its author". The
Swing ImageIcon class tries to use the "comment" property to get a
description of an ImageIcon. The idea of using one of these
"comment" properties seems to be out there -- but a lot of Googling
has failed to turn up any mention of how the #$&*@!!! (yeah, I'm
getting a bit frustrated at this point) you're supposed to put a
comment into an image in the first place.
I don't think the AWT JEPG decoder handles comments. If you look at
the JPEG Decoder source code in the JDK , there seems to be no
mention of setting properties at all.
You might have better luck using javax.imageio.ImageIO:
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Java-dev mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/java-dev/email@hidden
