Name: naC79102 Date: 11/23/2000


Several methods in java.awt.image.MultiPixelPackedSampleModel state that
"An ArrayIndexOutOfBoundsException
might be thrown if the coordinates are not in bounds." but the actual
algorithm to reproduce the condition which
will produce this Exception is not mentioned.
Exception is not thrown when x,y < 0, but when y*scanlineStride +
x*pixelStride + bandOffsets[band] < 0.




Sample code follows....
package
javasoft.sqe.tests.api.java.awt.java2d.image.MultiPixelPackedSampleModel;


import java.awt.image.MultiPixelPackedSampleModel;
import java.awt.image.DataBufferInt;
import java.awt.image.DataBuffer;

public class test {
public test() {

 MultiPixelPackedSampleModel csm = new MultiPixelPackedSampleModel(
   DataBuffer.TYPE_BYTE,5,5,1,5,
            new int[]{0,1,2});
    DataBufferInt db = new DataBufferInt(4000,2);
    int b = 5;

   try {
  // x<0
         csm.setSample(-1,25,1,b,db);
         System.out.println("No Exception. ");
   } catch (Exception e) {
     System.out.println("Caught "+e);
   }

   try {
  // y<0
         csm.setSample(25,-1,1,b,db);
         System.out.println("No Exception. ");
   } catch (Exception e) {
     System.out.println("Caught "+e);
   }

   try {
  // y*scanlineStride + x*pixelStride + bandOffsets[b] < 0
   csm.setSample(-1,-1,1,b,db);
   System.out.println("No Exception. ");
 } catch (Exception e) {
  System.out.println("Caught "+e);
 }





}

public static void main(String[] args) {
        new test();
}
}
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