How to figure out the width and height of an image?

[Zsolt]

Hi,

how can I figure out the height and width of an image (gif,jpeg, png etc.)
file?

Zsolt

 

[Andrew Thompson]

how can I figure out the height and width of an image (gif,jpeg, png etc.)
file?

Image image = Toolkit.getDefaultToolkit().getImage("pretty.gif");
int width = image.getWidth(null);
int height = image.getHeight(null);

HTH

 

[Zsolt]

Thank you Andrew,

I got -1 in width and height (Windows-XP, jdk-1.2.4-05). Instead of that I
found an other solution:

ImageIcon image = new ImageIcon(logoTargetFilename);

int width = image.getIconWidth();
int height = image.getIconHeight();

Zsolt

 

[ak]

I got -1 in width and height (Windows-XP, jdk-1.2.4-05).
because image was not loaded.

Instead of that I
found an other solution:

ImageIcon image = new ImageIcon(logoTargetFilename);

int width = image.getIconWidth();
int height = image.getIconHeight();

ImageIcon loads image.

after creating ImageIcon you will also get proper result with
however if you want to get some info about image _before_ it was loaded
e.g. you read image over network, then use Imagero Reader
http://reader.imagero.com.

 

[Tor Iver Wilhelmsen]

Image image = Toolkit.getDefaultToolkit().getImage("pretty.gif");

You need to use a MediaTracker here to wait for the image to actually
load before calling

 

[ak]

Image image = Toolkit.getDefaultToolkit().getImage("pretty.gif");

You need to use a MediaTracker here to wait for the image to actually
load before calling

ImageIcon does exactly that thing