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Date: Mon, 21 Sep 2015 18:59:55 +0100
Message-ID: 
 <CAOGo0Vb=GQ43nm+ySmDgzcKYnx9JpxJC5j4qBTGPMBvF24=1OA@mail.gmail.com>
Subject: Re: Version number for next commons-io
From: sebb <sebbaz@gmail.com>
To: Commons Developers List <dev@commons.apache.org>, joerg.schaible@gmx.de
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On 21 September 2015 at 18:36, J=C3=B6rg Schaible <joerg.schaible@gmx.de> w=
rote:
> Gary Gregory wrote:
>
>> Alternative to keep 100% BC
>>
>> - Remove the new method, release 2.5, and add it back for SNAPSHOT
>> - Add the new method in a new sub-interface
>
> or catch and ignore this special RTE when calling the new method form our
> code. Old clients never asked for it, new/updated clients can use it.
> Listener interface is a special case here.

This is what the JLS says about binary compatibity of a method
addition to an interface:

https://docs.oracle.com/javase/specs/jls/se7/html/jls-13.html#jls-13.5.3-10=
0

If the code were to use reflection it would notice the difference, but
otherwise the change is BC according to the JLS.

I don't think we need to do anything here, beyond pointing out that
recompilated client code may need to be updated.
But that is not a binary compatible issue, it is source compatibilty.

> - J=C3=B6rg
>
>
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