Mailing-List: contact dev-help@commons.apache.org; run by ezmlm
Precedence: bulk
Reply-To: "Commons Developers List" <dev@commons.apache.org>
Received-SPF: pass (nike.apache.org: domain of venkateshamurthyts@gmail.com
 designates 209.85.216.43 as permitted sender)
MIME-Version: 1.0
In-Reply-To: <cecbe1662579184242ece051fb99af60@scarlet.be>
References: <20140620133743.3000123889E1@eris.apache.org>
	<CAJSjvwtUeZLN=9AZJXuwOUH7ja1Noo67oGr0UwtFH5-SX2-RFw@mail.gmail.com>
	<a3f4fe78e5c3d7151e597631caa62d1c@scarlet.be>
	<CAJSjvwvGhebejrU9WS=7QRyZJ6iTD+HMeUVRAyfpoHpNO6ce3g@mail.gmail.com>
	<cecbe1662579184242ece051fb99af60@scarlet.be>
Date: Fri, 20 Jun 2014 21:11:42 +0530
Message-ID: 
 <CAE0LGD0P-C1=py475NWRiLJEN7jhWBtw29yiaUMg-wwkdLqLUg@mail.gmail.com>
Subject: Re: [Math] Supported Java versions
From: venkatesha murthy <venkateshamurthyts@gmail.com>
To: Commons Developers List <dev@commons.apache.org>
Content-Type: text/plain; charset=UTF-8

On Fri, Jun 20, 2014 at 9:00 PM, Gilles <gilles@harfang.homelinux.org> wrote:
> On Fri, 20 Jun 2014 16:57:41 +0200, Thomas Neidhart wrote:
>>
>> On 20 Jun 2014 16:37, "Gilles" <gilles@harfang.homelinux.org> wrote:
>>>
>>>
>>> On Fri, 20 Jun 2014 16:18:08 +0200, Thomas Neidhart wrote:
>>>>
>>>>
>>>> Java 5 is already eol. Anybody still using it is certainly in
>>>> maintenance
>>>> mode thus adding now a feature that is available in java 6 does not make
>>>> any sense.
>>>
>>>
>>>
>>> This a strong statement in a forum where it has _always_ been
>>> indicated that no post-Java-5 feature could be used.
>>
>>
>> These two are completely different things.
>>
>> Not using more recent java features was done in order to still support
>> users that are stuck with java 5 but want/have to use commons.
>>
>> Duplicating java 6 features in 2014 is pointless. What is the expected
>> userbase of this feature?
>
>
> Commons Math itself. And this was the real purpose of duplicating Java 6:
> no user ever asked for those methods in MathArrays. They were implemented
> for the sole reason that CM could not contain calls to methods not yet
> available in Java 5. [See the "pom.xml" of Commons Math.]
>
>> New users will certainly have adopted more recent
>> versions of java and anybody still using java 5 and having a need for this
>> will hopefully have implemented it already in his own codebase.
>
>
> This is completely unrelated to the issue.
>
>>>
>>> The right question, to be asked again (in case the answer will be
>>> different from all the other times) is: Is Commons Math still to
>>> support Java 5 ?
>>>
>>> If not, to which version do we switch to?  6, 7, 8?

I think JDK 7 may be the way to go ; since per
http://www.oracle.com/technetwork/java/eol-135779.html ; even JDK 6
has stopped public updates since last year.

>>
>>
>> Thats another question to be asked, but orthogonal to the above.
>
>
> No. The question is really: In Commons Math, can we call JDK's features
> that are post-Java-5?
> The answer has up to now been "No".
>
> If it becomes "yes", there are several CM methods that can be deprecated,
> and whose implementation can be right-away delegated to their JDK equivalent
> (in particular the "copyOf" family in "MathArrays").
>
> If it is still "No", for the reason you gave yourself above (users stuck
> with
> Java 5), then how is "copyOfRange" any different from all the other methods
> with a similar purpose (which is: prepare for switching to higher Java
> version)?
>
>
> Gilles
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: dev-unsubscribe@commons.apache.org
> For additional commands, e-mail: dev-help@commons.apache.org
>

---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@commons.apache.org
For additional commands, e-mail: dev-help@commons.apache.org