Name: vrR10176 Date: 04/05/2001



Api spec (jdk1.4.0beta-b58) says about field
javax.imageio.ImageWriteParam.preferredTileSizes:

"protected Dimension[] preferredTileSizes
  An array of preferred tile sizes. The default value is null,
which indicates that there are no preferred sizes.
  ImageWriters that do not support writing tiles may ignore this value."

This description does not say that Dimension array should
be a set of pairs. Therefore subclasses may assign to field
preferredTileSizes an array of length 1. But in this case
the method javax.imageio.ImageWriteParam.setTiling() throws
unspecified ArrayIndexOutOfBoundsException.

To reproduce the issue execute following test.
------------ myImageWriteParam.java ------------------------
import javax.imageio.ImageWriteParam;
import java.awt.Dimension;

public class myImageWriteParam extends ImageWriteParam {

public myImageWriteParam() {
super(null);
super.canWriteTiles = true;
super.preferredTileSizes = new Dimension[]{new Dimension(1,2)};
}

public static void main(String[] argv) {
myImageWriteParam myimagewriteparam = new myImageWriteParam();
myimagewriteparam.setTilingMode(ImageWriteParam.MODE_EXPLICIT);
myimagewriteparam.setTiling(0,0,0,0);
System.out.println("Test passed");
}
}
------------ Logs ------------------------------------------
$ javac myImageWriteParam.java

$ java -version
java version "1.4.0-beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-beta-b58)
Java HotSpot(TM) Client VM (build 1.4.0-beta-b58, mixed mode)

$ java myImageWriteParam
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException
        at javax.imageio.ImageWriteParam.setTiling(ImageWriteParam.java:585)
        at myImageWriteParam.main(myImageWriteParam.java:15)

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