Cyclic definition of overriding

[Alex Buckley]

On 6/9/2015 2:27 PM, Dan Smith wrote:
>> On Jun 9, 2015, at 3:12 PM, Alex Buckley <alex.buckley at oracle.com>
>> wrote:
>>
>> On 6/9/2015 1:36 PM, Alex Buckley wrote:
>>> Knowing to apply 9.4.1.1 rather than 8.4.8.1 is extremely subtle.
>>> Once you do, it's plain that Test1.foo() does not
>>> override-from-Test1 the method foo() declared in Test2, and vice
>>> versa, thus class Test inherits both foo() methods (harmlessly).
>>> I will add cross-refs from 8.4.8 to both 8.4.8.1 and 9.4.1.1 to
>>> clarify.
>>
>> In particular, the 8.4.8 clause:
>>
>> "such that m' from D' overrides the declaration of the method m."
>>
>> should read:
>>
>> "such that m' overrides from D' (8.4.8.1, 9.4.1.1) the declaration
>> of the method m." -- note the relocation of "from D'".
>>
>> (Plus class Test needs to be abstract of course.)
>
> Yes, this is good.  "From D' overrides" is awkward.
>
> The confusion isn't so much about Chapter 8 vs. Chapter 9 -- both
> immediately assert that Test1 is a subclass/subinterface of Test2.
> The problem is in recognizing that D' (Test1) is not the same as D
> (Test), which this change makes more clear.  (Hope I'm not mixing up
> Test1 and Test2 here, but if so, you know what I mean.)

... that D' (Test1) is not the same as D (Test2).  (Yes, maybe D is 
Test1 and D' is Test2.)

Konstantin, the scenario would be clearer if the superinterfaces were 
called I1 and I2 rather than aggressively sharing letters T-e-s-t with 
the name of the inheriting class.

Alex