Try adding
public static hashCode(Object key) {
return 3;
}
to MyClass. Such a class is broken by the proposed change.
On Tue, Oct 27, 2009 at 2:49 AM, Ulf Zibis <[email protected]> wrote:
> Correction:
>
>
> public class MyClass1 {
> private final int value;
>
> public MyClass1(int value) {
> this.value = value;
> }
>
> public static int hashCode(MyClass1 obj) {
> return 3 * obj.value;
> }
>
> public static void main(String... args) {
> MyClass1 c = new MyClass1(99);
> System.out.println(c.hashCode());
> System.out.println(hashCode(c));
> System.out.println(Object.hashCode(c)); // compile error if using
> official version of class Object
> }
> }
>
>
> -Ulf
>
>
>
