Uncaught error fetching image with PixelGrabber

[Alexandre]

public Contenu()
{
super();
setVisible(true);
setBounds(50,50,1024,768);
setDoubleBuffered(true);
Toolkit tk = Toolkit.getDefaultToolkit();
fond = tk.getImage("solgalactic.jpg");
MediaTracker mt = new MediaTracker(this);
mt.addImage(fond, 0);
try{mt.waitForAll(); } catch(Exception e){e.printStackTrace();}
int[] pix = new int[fond.getWidth(this)*fond.getHeight(this)];

PixelGrabber pg = new PixelGrabber(fond, 0, 0,
fond.getWidth(this),fond.getHeight(this), pix, 0,
fond.getWidth(this)*fond.getHeight(this));

//the bug comes in this try catch block
try{pg.grabPixels();}catch(ArrayIndexOutOfBoundsException
e){e.printStackTrace();}catch(Exception e){e.printStackTrace();}

}

While executing the previous code I get this blocking uncaught error.

Uncaught error fetching image:
java.lang.ArrayIndexOutOfBoundsException: 786432
at java.awt.image.PixelGrabber.setPixels(PixelGrabber.java:563)
at sun.awt.image.PixelStore32.replayLines(PixelStore32.java:41)
at sun.awt.image.PixelStore.replay(PixelStore.java:224)
at sun.awt.image.PixelStore.replay(PixelStore.java:153)
at sun.awt.image.InputStreamImageSource.updateFromStore(InputStreamImageSource.java:282)
at sun.awt.image.InputStreamImageSource.doFetch(InputStreamImageSource.java:235)
at sun.awt.image.ImageFetcher.fetchloop(ImageFetcher.java:221)
at sun.awt.image.ImageFetcher.run(ImageFetcher.java:189)

can anyone help me ?

 

[Knute Johnson]

PixelGrabber pg = new PixelGrabber(fond, 0, 0,
fond.getWidth(this),fond.getHeight(this), pix, 0,
fond.getWidth(this)*fond.getHeight(this));

can anyone help me ?

Yes. The last parameter, int scansize, is "the distance from one row of
pixels to the next in the array". In other words the width of the
image. Take out the *fond.getHeight(this) and it should work just fine.

On another note is there some reason you are not using the modern
methods for reading image files and gathering pixel data? What are you
ultimately going to do with this pixel data?