Finding Image Height And Width using ImageIcon Class

[JProg]

Hi Everyone,

This is kind of a continuation of a previous post. My application is now using ImageIcons to access information about a number of pictures. I am able to successfully "load" the pictures however when I use the methods "getIconHeight()" and "getIconWidth()" to determine the heights and widths of my pictures I simply get -1's returned across the board. The API documentation for ImageIcon isn't great, but from reading the docs on the Image class I believe that my -1's are the result of:

".... (height / width) is not yet known, this method returns -1 and the specified ImageObserver object is notified later."

If anybody out there can help me with determining the real height and width (as opposed to the most unhelful -1) I will be really appreciative. Thanks heaps for your assistance.

Regards

David

 

[prosper]

import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
public class LoadImage
{
private BufferedImage img;
private File imgFile;
private int height;
private int width;

public LoadImage()
{
try{
imgFile = new File("image/a.gif");
img = ImageIO.read(imgFile);
}catch(IllegalArgumentException iae){
System.out.println("IllegalArgumentException in ImageIO.read() method.");
}catch(IOException ioe){
System.out.println("IOException in ImageIO.read() method.");
}catch(NullPointerException npe){
System.out.println("NullPointerException in File() method.");
}

height = img.getHeight();
width = img.getWidth();

System.out.println("The picture is " + height + " pixels high and "
+ width + " pixels wide.");

}

public static void main(String[] args)
{
LoadImage myLoadedImage = new LoadImage();
}
}

 

[sedj]

JProg :

As my reply to your last post, I would use the javax.imageio package.