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Groups > comp.lang.java.programmer > #16288

Re: @Override

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On 7/23/2012 7:58 PM, Arne Vajhøj wrote:
> On 7/23/2012 4:35 PM, Eric Sosman wrote:
>> On 7/23/2012 2:30 PM, bob smith wrote:
>>> Is it really necessary to write @Override when you override or is this
>>> just "a good thing"?
>>
>>      Two benefits of @Override appear to me, one from its presence
>> and one from its absence:
>>
>>      - If you write @Override and then misspell the method name or
>>        mess up the parameter list, Java will say "Hey, wait: There's
>>        nothing in the superclass with this signature; what do you
>>        think you're doing?"  And then you'll say "Oops!" and fix
>>        the problem, instead of wondering why your "overriding" method
>>        doesn't seem to work.
>>
>>      - If you write a method and your IDE starts suggesting that you
>>        ought to tag it with @Override, you'll be alerted that you've
>>        overridden something you didn't intend to.[*]
>>
>>      Two benefits; that's all I see.  Hence, like indentation and
>> Javadoc comments, not "really necessary" ...
>
> I see the biggest benefits being the documentation.
>
> It can be important to know that ones method may be called
> by the super class.
>
> And all arguments seems related to extends not implements, so
> I m not convinced that extending it to interface methods was
> wise.

    A separate @Implements annotation instead of @Override might
have been better for interfaces.  But what should one do about
abstract methods in abstract superclasses?  Are those @Override
or @Implements, or maybe @Concretizes?  And why should the class
with the actual implementation care about the distinction?  And
what about concrete methods *intended* to be overridden, as in
MouseAdapter?  @ProFormaOverrides?

     Looks like fodder for a "whichness of the why" debate.

-- 
Eric Sosman
esosman@ieee-dot-org.invalid

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@Override bob smith <bob@coolfone.comze.com> - 2012-07-23 11:30 -0700
  Re: @Override Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2012-07-23 20:52 +0200
  Re: @Override markspace <-@.> - 2012-07-23 11:54 -0700
    Re: @Override Lew <lewbloch@gmail.com> - 2012-07-23 13:05 -0700
    Re: @Override Arne Vajhøj <arne@vajhoej.dk> - 2012-07-23 19:54 -0400
  Re: @Override "John B. Matthews" <nospam@nospam.invalid> - 2012-07-23 15:56 -0400
    Re: @Override Peter Duniho <NpOeStPeAdM@NnOwSlPiAnMk.com> - 2012-07-23 14:19 -0700
      Re: @Override rossum <rossum48@coldmail.com> - 2012-07-24 13:09 +0100
        Re: @Override Arne Vajhøj <arne@vajhoej.dk> - 2012-07-24 21:29 -0400
      Re: @Override Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-07-24 09:04 -0400
  Re: @Override Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-07-23 16:35 -0400
    Re: @Override Lew <lewbloch@gmail.com> - 2012-07-23 13:59 -0700
      Re: @Override Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2012-07-23 23:40 +0200
        Re: @Override Lew <lewbloch@gmail.com> - 2012-07-23 14:51 -0700
          Re: @Override Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2012-07-24 00:08 +0200
            Re: @Override Lew <lewbloch@gmail.com> - 2012-07-23 16:57 -0700
      Re: @Override Robert Klemme <shortcutter@googlemail.com> - 2012-07-24 09:46 +0200
    Re: @Override Arne Vajhøj <arne@vajhoej.dk> - 2012-07-23 19:58 -0400
      Re: @Override Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-07-23 22:16 -0400
        Re: @Override Arne Vajhøj <arne@vajhoej.dk> - 2012-07-23 22:57 -0400
          Re: @Override Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-07-23 23:47 -0400
            Re: @Override Arne Vajhøj <arne@vajhoej.dk> - 2012-07-24 21:35 -0400
    Re: @Override Jim Janney <jjanney@shell.xmission.com> - 2012-07-26 20:00 -0600
  Re: @Override Gene Wirchenko <genew@ocis.net> - 2012-07-23 14:01 -0700
  Re: @Override Silvio Bierman <silvio@moc.com> - 2012-07-24 00:22 +0200
    Re: @Override Arne Vajhøj <arne@vajhoej.dk> - 2012-07-23 19:53 -0400
      Re: @Override Gene Wirchenko <genew@ocis.net> - 2012-07-23 18:59 -0700
      Re: @Override Silvio Bierman <silvio@moc.com> - 2012-07-24 22:57 +0200
        Re: @Override Arne Vajhøj <arne@vajhoej.dk> - 2012-07-24 21:24 -0400
    Re: @Override Robert Klemme <shortcutter@googlemail.com> - 2012-07-24 15:36 +0200
      Re: @Override Gene Wirchenko <genew@ocis.net> - 2012-07-24 09:54 -0700
      Re: @Override Silvio Bierman <silvio@moc.com> - 2012-07-24 23:14 +0200
        Re: @Override Robert Klemme <shortcutter@googlemail.com> - 2012-07-25 07:57 +0200
          Re: @Override Gene Wirchenko <genew@ocis.net> - 2012-07-25 10:34 -0700
          Re: @Override Arne Vajhøj <arne@vajhoej.dk> - 2012-07-25 14:54 -0400
            Re: @Override Wanja Gayk <brixomatic@yahoo.com> - 2012-07-30 14:42 +0200
      Re: @Override Arne Vajhøj <arne@vajhoej.dk> - 2012-07-24 21:20 -0400
        Re: @Override Lew <noone@lewscanon.com> - 2012-07-25 06:26 -0700
          Re: @Override Arne Vajhøj <arne@vajhoej.dk> - 2012-07-25 17:16 -0400
  Re: @Override Roedy Green <see_website@mindprod.com.invalid> - 2012-07-23 20:59 -0700
  Re: @Override Wanja Gayk <brixomatic@yahoo.com> - 2012-07-24 16:06 +0200

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