Can't get setRGB to work

Question

I get the following error at runtime:
Exception occurred during event dispatching:
java.lang.ArrayIndexOutOfBoundsException
at sun.awt.image.IntegerInterleavedRaster.setDataElements(IntegerInterleavedRaster.java)
at java.awt.image.BufferedImage.setRGB(BufferedImage.java)
at HorizonFinder.paint(HorizonFinder.java:44)
at java.awt.Container.update(Container.java)
at sun.awt.RepaintArea.update(RepaintArea.java)
at com.apple.mrj.internal.awt.VComponentPeer.reallyDoThePaintOrUpdate(VComponentPeer.java)
at com.apple.mrj.internal.awt.VComponentPeer.handlePaintEvent(VComponentPeer.java)
at com.apple.mrj.internal.awt.VComponentPeer.handleEvent(VComponentPeer.java)
at java.awt.Component.dispatchEventImpl(Component.java)
at java.awt.Container.dispatchEventImpl(Container.java)
at java.awt.Component.dispatchEvent(Component.java)
at java.awt.EventQueue.dispatchEvent(EventQueue.java)
at java.awt.EventDispatchThread.pumpOneEvent(EventDispatchThread.java)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java)
at java.awt.EventDispatchThread.run(EventDispatchThread.java)
The setRGB statement that its referring to is as follows:
for (int y=1; y<469; y++) {
if (y-horizon>1) {
rgb = play.getRGB(1, y);
play.setRGB(1, y-horizon, rgb);
play is a BufferedImage that works fine otherwise, and horizon is defined earlier. Any clues?
Matt

Answer 1

ok
for anyone else who is having a similar problem, I found a way around it. It's really clumsy, but, since the BufferedImage I was working with was going to a Graphics context anyway (using drawImage), I just got the color of each pixel I wanted (color=new Color(play.getRGB(x, y);) instead of just the getRGB method, and set the Graphics color to that (setColor(...))and used drawLine with the same start and end points. Whatever.
Matt