Hi,
I wrote a while back about having problems with the ImageComponent2D constructor. I am
still stuck on this. I was told that a NullPointerException occurred as the ColorModel
was set to null for my image. I tried to fix that by setting a ColorModel for the
object. I read that the ColorModel should have same transfer type as the sample model
of the image. Here is the code fragment I used. This code fragment is used to create a
RenderedImage. It uses JAI to decode DICOM images
sampleModel
= RasterFactory.createPixelInterleavedSampleModel(DataBuffer.TYPE_SHORT,
width,
height,
1);
//create a ColorModel object
ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_GRAY);
int bits[] = new int[] {8};
colorModel = new
ComponentColorModel(cs,bits,false,false,Transparency.OPAQUE,DataBuffer.TYPE_SHORT);
Now I get an unsupported method error. I am not allowed to use TYPE_SHORT.
Exception occurred during event dispatching:
java.lang.UnsupportedOperationException: This method has not been implemented for
transferType 2
at
java.awt.image.ComponentColorModel.extractComponent(ComponentColorModel.java:372)
at
java.awt.image.ComponentColorModel.getRGBComponent(ComponentColorModel.java:315)
at java.awt.image.ComponentColorModel.getRed(ComponentColorModel.java:425)
at
javax.media.j3d.ImageComponentRetained.copyImage(ImageComponentRetained.java:371)
at
javax.media.j3d.ImageComponent2DRetained.set(ImageComponent2DRetained.java:370)
at javax.media.j3d.ImageComponent2D.<init>(ImageComponent2D.java:103)
at BrainGUI.actionPerformed(BrainGUI.java:178)
at java.awt.MenuItem.processActionEvent(MenuItem.java:526)
at java.awt.MenuItem.processEvent(MenuItem.java:490)
at java.awt.MenuComponent.dispatchEventImpl(MenuComponent.java:266)
at java.awt.MenuComponent.dispatchEvent(MenuComponent.java:256)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:336)
at
java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:126)
at
java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:88)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:80)
Can someone also tell me how I can find out what these exceptions mean, and how I can
figure out what I am doing wrong? I am sorry if this problem seems too simple. I am
very new to Java.
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