Get Image Height and Width

[neeraj.singh]

Hi all,

i am trying to get the height and width of an imgae,
see below

url = new URL("some url of an image");
Image img = Toolkit.getDefaultToolkit().getDefaultToolkit().cr eateImage(url);
img.getHeight(....?????);

but not able to get the real height and width.
i am trying to put null at ????..

Thank you.
Regards,
Neeraj

[Steve11235]

Try

BufferedImage image = ImageIO.read(url);

Image is an abstract class; BufferedImage seems to be the most common concrete subclass. Look at the BufferedImage API.

[toadaly]

In general, images are read asynchronously. To guarantee the image has been completely read, you would need to call 'getHeight' with a non-null ImageObserver that you've implemented to guarantee the read is complete. I did this one time when I was trying to eke every microgram of performance out of an application (it's slightly faster to do it this way than to use ImageIO), but it's much more complicated than just doing what Steve recommended, which handles all that mess for you.

[neeraj.singh]

hi steve,

Thanks for the help, but dear..
i dont find any method like read() in bufferedimage / image class.

i am also confused how to use ImageObserver, please help me with this.

Thanks
regards,
- neeraj

[DarrylBurke]

hi steve,

Thanks for the help, but dear..
i dont find any method like read() in bufferedimage / image class.

i am also confused how to use ImageObserver, please help me with this.

Thanks
regards,
- neeraj

Read response #2 again. And this time, really read it.

db

[neeraj.singh]

wt is imageIO? how to use it?

[DarrylBurke]

wt is imageIO? how to use it?

Nothing I've ever come across. Java is case sensitive.

db

[toadaly]

ImageIO is a class in the javax.imageio package, which is part of the core Java distribution. With questions this basic, I strongly discourage you from moving forward with the Toolkit approach.

[neeraj.singh]

hello toadaly,

then you tell me how can i get the image's height...
its not a simple image... i am getting the image from some url..

thanks in advance
/\/

[toadaly]

Follow the advice Steve gave. Is there a reason you're ignoring him? ImageIO works with URLs, files, jar files, etc.

[CJSLMAN]

For those who doubted that ImageIO existed...

ImageIO (Java Platform SE 6)

... and guess what?... it does have a read() method... as a matter of fact , it has 4 read() methods.

Luck,
CJSL