defender methods and method of Object

[Sam Pullara]

I am all for special casing these. It is far too useful to be able to
provide equals()/hashCode()/toString() at the interface level for
things like List to not to include this capability. Especially since
there is precedent for their special treatment.

Sam

On Sat, Mar 3, 2012 at 11:19 AM, Yuval Shavit <yshavit at akiban.com> wrote:
> Well, Object is special-cased in the very definition of an interface (in
> 4.10.2), so I could see the case for special-casing it for default
> implementations.
>
> On Sat, Mar 3, 2012 at 6:23 AM, David Holmes <david.holmes at oracle.com>wrote:
>
>> I don't see any reason to special case Object methods. Superclass wins
>> over interface with a default - pure and simple.
>>
>> David
>>
>> On 3/03/2012 2:19 AM, Rémi Forax wrote:
>> > On 03/02/2012 05:08 PM, bitter_fox wrote:
>> >> Hi,
>> >> You have to override toString in A to use the default implementation,
>> >> in this case, using the syntax "Interface.super.method()":
>> >> (because the definition of super-class is preferred if the extended
>> >> definitions from super-class and super-interface are clashing)
>> >>
>> >> public class A implements Foo
>> >> {
>> >>      public String toString()
>> >>      {
>> >>          return Foo.super.toString();
>> >>      }
>> >> }
>> >>
>> >> new A().toString(); // returns "Foo"
>> >>
>> >> However, this calling would be StackOverflowError because the syntax
>> >> may be only on "Syntax" and be not implemented for byte code.
>> >>
>> >> I can't judge that semantics is right or wrong, so I only refer to the
>> >> way to override.(Although I think it is right...)
>> >> Excuse me if you already know the way.
>> >
>> > No problem.
>> > I just think that the semantics should be changed a little bit by adding
>> > a special case for method from Object because
>> > otherwise the default method will be never called directly
>> > (as you said, you can use I.super.foo()).
>> >
>> >>
>> >> Regards,
>> >> bitter_fox
>> >
>> > cheers,
>> > Rémi
>> >
>> >
>>
>>
>