Name: akC57697 Date: 02/18/99



 The Toolkit.createCustomCursor does not check absence of the image of cursor.

 The javadoc says:
"
public Cursor createCustomCursor(Image cursor,
                                 Point hotSpot,
                                 String name)
                          throws IndexOutOfBoundsException

      Creates a new custom cursor object.
      Parameters:
            image - the image to display when the cursor is active.
            hotSpot - the X and Y of the large cursor's hot spot. The hotSpot values
            must be less than the Dimension returned by getBestCursorSize().
            name - a localized description of the cursor, for Java Accessibility use.
      Throws:
            IndexOutOfBoundsException - if the hotSpot values are outside the bounds
            of the cursor.
"

---------------------------------------8-<-----------------------------------
import java.awt.Toolkit;
import java.awt.Dimension;
import java.awt.Point;
import java.awt.Cursor;
import java.awt.Image;
import java.awt.Canvas;


public class Test {

    public static void main(String argv[]) {
        Toolkit tk = Toolkit.getDefaultToolkit();
        Dimension dk = tk.getBestCursorSize(16, 16);
        Image image = tk.getImage("NON_EXISTING_FILE.gif");
        if (image == null) {
            System.out.println("No image has loaded");
            System.exit(0);
        }
        Cursor c = null;
        Canvas cp = new Canvas();
        Point p = new Point(0, 0);
        try {
            c = tk.createCustomCursor(image, p, "Test");
        } catch (Exception e) {
            System.out.println("image:" + image + " with the size: "
                    + image.getWidth(cp) + " x " + image.getHeight(cp));
            System.out.println("1 getBestCursorSize:" + dk);
            System.out.println("Values are:" + p);
            System.out.println("The cursor size is " + dk);
            System.out.println("Unexpected " + e);
            e.printStackTrace();
            System.exit(0);
        }
        System.out.println("OKAY");
        System.exit(0);
    }
}
---------------------------------------8-<-----------------------------------
(No JIT to see the trace)
image:sun.awt.motif.X11Image@7f3eb146 with the size: -1 x -1
1 getBestCursorSize:java.awt.Dimension[width=16,height=16]
Values are:java.awt.Point[x=0,y=0]
The cursor size is java.awt.Dimension[width=16,height=16]
Unexpected java.lang.NegativeArraySizeException
java.lang.NegativeArraySizeException
at sun.awt.CustomCursor.<init>(CustomCursor.java:69)
at sun.awt.motif.X11CustomCursor.<init>(X11CustomCursor.java:45)
at sun.awt.motif.MToolkit.createCustomCursor(MToolkit.java:377)
at Test.main(Test.java:23)

java full version "JDK-1.2.2-E"

-----------------------------------------------------------------
 * @(#)CustomCursor.java 1.7 99/01/11
...
line 38 MediaTracker tracker = new MediaTracker(c);
        tracker.addImage(cursor, 0);
        try {
            tracker.waitForAll();
        } catch (InterruptedException e) {
        } <--tracker.isErrorAny()? would catch this
        int width = cursor.getWidth(c);
        int height = cursor.getHeight(c);
...


======================================================================