Summary

This CSR updates the behavior of the patch integrated under [JDK-8371308|https://bugs.openjdk.org/browse/JDK-8371308]. This change restores the original exception type thrown when the data argument is null from IllegalArgumentException back to NullPointerException.

Problem

The earlier patch modified the thrown exception for a null data argument from NullPointerException to IllegalArgumentException. This introduced an inconsistency with long-standing behavior, as well as with established practices in related code.

Solution

Revert the exception type for a null data parameter from IllegalArgumentException back to NullPointerException.

Specification

    src/java.desktop/share/classes/java/awt/image/Kernel.java

     @@ -59,7 +60,7 @@ public class Kernel implements Cloneable {
          * @param width         width of the kernel
          * @param height        height of the kernel
          * @param data          kernel data in row major order
    -     * @throws IllegalArgumentException if {@code data} is null
    +     * @throws NullPointerException if {@code data} is null
          * @throws IllegalArgumentException if {@code width} or {@code height}
          *         is not positive
          * @throws IllegalArgumentException if product of {@code width} and
@@ -69,9 +70,7 @@ public class Kernel implements Cloneable {
          *         {@code height}
          */
     public Kernel(int width, int height, float[] data) {