Groups > comp.lang.java.programmer > #8093

Re: Style Police (a rant)

From	Wanja Gayk <brixomatic@yahoo.com>
Newsgroups	comp.lang.java.programmer
Subject	Re: Style Police (a rant)
Date	2011-09-17 00:57 +0200
Organization	Netfront http://www.netfront.net/
Message-ID	<MPG.28d7673e2cb655989896bb@202.177.16.121> (permalink)
References	(3 earlier) <slrnj6mj4j.6gl.avl@gamma.logic.tuwien.ac.at> <d056de37-3406-4ea1-950e-cd762fa35b6b@glegroupsg2000goo.googlegroups.com> <slrnj6pg53.6gl.avl@gamma.logic.tuwien.ac.at> <c49eeaae-647b-423e-820c-86221b6b9f21@glegroupsg2000goo.googlegroups.com> <slrnj6qh8n.6gl.avl@gamma.logic.tuwien.ac.at>

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In article <slrnj6qh8n.6gl.avl@gamma.logic.tuwien.ac.at>, 
avl@gamma.logic.tuwien.ac.at says...

> While a *non*-final List<String> typed variable could later be 
assigned
> an instance of LinkedList<String>, a final can't.  It hardly ever hurts
> to have a final variable carry the most specific subtype.

Really?

final x = new Vector<String>();
Enumeration e = x.elements();
...

Now a few weeks later, after every bit in the program assumes it can use 
the methods specific to Vector, you decide it's better to use a 
LinkedList and just change the assignment:

final x = new LinkedList<String>();
Enumeration e = x.elements(); <<- and breaks this and everything else 
that relied on the specific type.

Abstraction is the whole point of declaring interfaces, you don't want 
your code to be brittle.

Kind regards,
Wanja

-- 
..Alesi's problem was that the back of the car was jumping up and down 
dangerously - and I can assure you from having been teammate to 
Jean Alesi and knowing what kind of cars that he can pull up with, 
when Jean Alesi says that a car is dangerous - it is. [Jonathan Palmer]

--- Posted via news://freenews.netfront.net/ - Complaints to news@netfront.net ---

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Re: Style Police (a rant) Wanja Gayk <brixomatic@yahoo.com> - 2011-09-10 06:45 +0200
  Re: Style Police (a rant) Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-09-10 11:40 +0000
    Re: Style Police (a rant) Lew <lewbloch@gmail.com> - 2011-09-10 14:06 -0700
      Re: Style Police (a rant) Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-09-11 14:07 +0000
        Re: Style Police (a rant) Arne Vajhøj <arne@vajhoej.dk> - 2011-09-11 10:55 -0400
          Re: Style Police (a rant) Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-09-11 23:34 +0000
        Re: Style Police (a rant) Arne Vajhøj <arne@vajhoej.dk> - 2011-09-11 10:58 -0400
          Re: Style Police (a rant) Patricia Shanahan <pats@acm.org> - 2011-09-11 10:12 -0700
          Re: Style Police (a rant) Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-09-14 12:22 +0000
          Re: Style Police (a rant) Bent C Dalager <bcd@pvv.ntnu.no> - 2011-09-14 15:04 +0000
            Re: Style Police (a rant) Paul Cager <paul.cager@googlemail.com> - 2011-09-14 09:36 -0700
        Re: Style Police (a rant) Lew <lewbloch@gmail.com> - 2011-09-11 09:47 -0700
          Re: Style Police (a rant) Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-09-11 23:32 +0000
            Re: Style Police (a rant) Wanja Gayk <brixomatic@yahoo.com> - 2011-09-17 00:57 +0200
              Re: Style Police (a rant) Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-09-17 19:56 +0000
        Re: Style Police (a rant) Wanja Gayk <brixomatic@yahoo.com> - 2011-09-11 21:20 +0200
          Re: Style Police (a rant) Cthun <cthun_117@qmail.net.au> - 2011-09-11 17:11 -0400
            Re: Style Police (a rant) Wanja Gayk <brixomatic@yahoo.com> - 2011-09-12 01:22 +0200
              Re: Style Police (a rant) Arne Vajhøj <arne@vajhoej.dk> - 2011-09-11 21:13 -0400
            Re: Style Police (a rant) Retahiv Oopsiscame <roopsisc@gmail.com> - 2011-09-11 16:54 -0700
              Re: Style Police (a rant) Cthun <cthun_117@qmail.net.au> - 2011-09-11 23:42 -0400
                Re: Style Police (a rant) Retahiv Oopsiscame <roopsisc@gmail.com> - 2011-09-12 21:54 -0700
                Re: Style Police (a rant) "Cthun" <cthun_117@qmail.net.au> - 2011-09-13 07:18 -0400
                Re: Style Police (a rant) Cthun <cthun_117@qmail.net.au> - 2011-09-13 10:07 -0400
                Re: Style Police (a rant) Lew <lewbloch@gmail.com> - 2011-09-13 08:15 -0700
                Re: Style Police (a rant) Cthun <cthun_117@qmail.net.au> - 2011-09-13 12:00 -0400
                Re: Style Police (a rant) Cthun <cthun_117@qmail.net.au> - 2011-09-13 10:10 -0400
                Re: Style Police (a rant) Retahiv Oopsiscame <roopsisc@gmail.com> - 2011-09-13 09:55 -0700
                Re: Style Police (a rant) Cthun <cthun_117@qmail.net.au> - 2011-09-15 10:37 -0400
                Re: Style Police (a rant) "Cthun" <cthun_9112011@qmail.net.au> - 2011-09-15 22:58 -0400
                Murphy = Troll [DO NOT FEED] thoolen <th00len@th0lenbot.thorium> - 2011-09-16 00:23 -0400
                Re: Style Police (a rant) Retahiv Oopsiscame <roopsisc@gmail.com> - 2011-09-16 03:26 -0700
                Re: Style Police (a rant) un-Bent <dob@dib.dib.null> - 2011-09-16 13:02 +0000
                Murphy = Troll [DO NOT FEED] thoolen <th00len@th0lenbot.thorium> - 2011-09-16 22:40 -0400
                Re: Style Police (a rant) Cthun <cthun_117@qmail.net.au> - 2011-09-17 19:36 -0400
                Re: Style Police (a rant) "kaffel'latte" <jiggingjava@qmail.net> - 2011-09-19 08:58 -0400
                Re: Style Police (a rant) thoolen <th00len@th0lenbot.thorium> - 2011-09-19 11:56 -0400
                Re: Style Police (a rant) "kaffel'latte" <jiggingjava@qmail.net> - 2011-09-19 17:05 -0400
                Re: Style Police (a rant) thoolen <th00len@th0lenbot.thorium> - 2011-09-19 19:13 -0400
                Re: Style Police (a rant) k00k Derbyshire spins freely "kaffel'latte" <jiggingjava@qmail.net> - 2011-09-19 20:45 -0400
                Re: Style Police (a rant) k00k Derbyshire spins freely thoolen <th00len@th0lenbot.thorium> - 2011-09-21 18:37 -0400
                Re: Style Police (a rant) Retahiv Oopsiscame <roopsisc@gmail.com> - 2011-09-26 15:13 -0700
                Re: Style Police (a rant) Cthun <cthun_117@qmail.net.au> - 2011-09-26 19:34 -0400
                Re: Style Police (a rant) Retahiv Oopsiscame <roopsisc@gmail.com> - 2011-10-01 06:49 -0700
                Re: Style Police (a rant) Lew <lewbloch@gmail.com> - 2011-10-01 09:21 -0700
                Re: Style Police (a rant) Cthun <cthun_117@qmail.net.au> - 2011-10-01 14:17 -0400
                Re: Style Police (a rant) Wanja Gayk <brixomatic@yahoo.com> - 2011-10-01 20:53 +0200
                Re: Style Police (a rant) Cthun <cthun_117@qmail.net.au> - 2011-10-01 21:12 -0400
                Re: Style Police (a rant) Retahiv Oopsiscame <roopsisc@gmail.com> - 2011-10-05 06:17 -0700
              Re: Style Police (a rant) "Cthun" <cthun_117@qmail.net.au> - 2011-09-12 04:56 -0400
                Re: Style Police (a rant) Cthun <cthun_117@qmail.net.au> - 2011-09-12 05:12 -0400
              Re: Style Police (a rant) "Cthun" <cthun_117@qmail.net.au> - 2011-09-12 04:59 -0400
                Re: Style Police (a rant) Cthun <cthun_117@qmail.net.au> - 2011-09-12 05:13 -0400
          Re: Style Police (a rant) Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-09-11 23:17 +0000
            Re: Style Police (a rant) Arne Vajhøj <arne@vajhoej.dk> - 2011-09-11 21:12 -0400
            Re: Style Police (a rant) Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2011-09-12 07:36 -0300
          Re: Style Police (a rant) "Cthun" <cthun_117@qmail.net.au> - 2011-09-12 04:58 -0400
            Re: Style Police (a rant) Cthun <cthun_117@qmail.net.au> - 2011-09-12 05:12 -0400
    Re: Style Police (a rant) Wanja Gayk <brixomatic@yahoo.com> - 2011-09-11 15:33 +0200
      Re: Style Police (a rant) Lew <lewbloch@gmail.com> - 2011-09-11 09:42 -0700
        Re: Style Police (a rant) Lars Enderin <lars.enderin@telia.com> - 2011-09-11 20:35 +0200
          Re: Style Police (a rant) Retahiv Oopsiscame <roopsisc@gmail.com> - 2011-09-11 16:55 -0700
            Re: Style Police (a rant) Lew <lewbloch@gmail.com> - 2011-09-11 20:36 -0700
              Re: Style Police (a rant) Lars Enderin <lars.enderin@telia.com> - 2011-09-12 10:05 +0200
                Re: Style Police (a rant) Lew <lewbloch@gmail.com> - 2011-09-12 15:35 -0700
                Re: Style Police (a rant) Lars Enderin <lars.enderin@telia.com> - 2011-09-13 10:35 +0200
                Re: Style Police (a rant) Retahiv Oopsiscame <roopsisc@gmail.com> - 2011-09-13 09:48 -0700
                Re: Style Police (a rant) Lew <lewbloch@gmail.com> - 2011-09-13 12:18 -0700
                Re: Style Police (a rant) Retahiv Oopsiscame <roopsisc@gmail.com> - 2011-09-13 17:30 -0700
                Re: Style Police (a rant) Retahiv Oopsiscame <roopsisc@gmail.com> - 2011-09-12 21:59 -0700
                Re: Style Police (a rant) Joe Attardi <jattardi@gmail.com> - 2011-09-23 10:54 -0700
                Re: Style Police (a rant) thoolen <th00len@th0lenbot.thorium> - 2011-09-24 01:54 -0400
                Re: Style Police (a rant) "tholen@antispam.ham" <tholen@ifa.hawaii.edu> - 2011-09-24 02:58 -0700
                Re: Style Police (a rant) thoolen <th00len@th0lenbot.thorium> - 2011-09-24 11:35 -0400
                Re: Style Police (a rant) Joe Attardi <jattardi@gmail.com> - 2011-09-26 13:50 -0700
                Re: Style Police (a rant) Jane Doe <jdoe@love.in.d.jungle.invalid> - 2011-09-26 21:14 +0000
                Re: Style Police (a rant) thoolen <th00len@th0lenbot.thorium> - 2011-09-26 17:50 -0400
                Re: Style Police (a rant) thoolen <th00len@th0lenbot.thorium> - 2011-09-26 17:47 -0400
                Re: Style Police (a rant) Retahiv Oopsiscame <roopsisc@gmail.com> - 2011-09-26 15:17 -0700
                Re: Style Police (a rant) Jane Doe <jdoe@love.in.d.jungle.invalid> - 2011-09-27 00:50 +0000
                Re: Style Police (a rant) tisue@cs.nwu.edu (Seth Tisue) - 2011-09-27 08:55 -0600
                Re: Style Police (a rant) thoolen <th00len@th0lenbot.thorium> - 2011-09-27 14:14 -0400
                Re: Style Police (a rant) thoolen <th00len@th0lenbot.thorium> - 2011-09-27 14:11 -0400
                Re: Style Police (a rant) Retahiv Oopsiscame <roopsisc@gmail.com> - 2011-10-01 07:31 -0700
                Re: Style Police (a rant) thoolen <th00len@th0lenbot.thorium> - 2011-09-26 22:24 -0400
                Re: Style Police (a rant) Jane Doe <jdoe@love.in.d.jungle.invalid> - 2011-09-27 09:30 +0000
                Re: Style Police (a rant) tisue@cs.nwu.edu (Seth Tisue) - 2011-09-27 08:57 -0600
                Re: Style Police (a rant) thoolen <th00len@th0lenbot.thorium> - 2011-09-27 14:38 -0400
                Re: Style Police (a rant) thoolen <th00len@th0lenbot.thorium> - 2011-09-27 14:36 -0400
                Re: Style Police (a rant) Kaz Kylheku <kaz@kylheku.com> - 2011-09-30 15:58 +0000
                Re: Style Police (a rant) Retahiv Oopsiscame <roopsisc@gmail.com> - 2011-10-01 07:32 -0700
                Re: Style Police (a rant) Arne Vajhøj <arne@vajhoej.dk> - 2011-09-30 21:26 -0400
                Re: Style Police (a rant) Retahiv Oopsiscame <roopsisc@gmail.com> - 2011-10-01 07:34 -0700
                Re: Style Police (a rant) Arne Vajhøj <arne@vajhoej.dk> - 2011-10-01 15:51 -0400
                Re: Style Police (a rant) Retahiv Oopsiscame <roopsisc@gmail.com> - 2011-10-05 06:18 -0700
                Re: Style Police (a rant) "Cthun" <cthun_117@qmail.net.au> - 2011-10-01 16:26 -0400
                Re: Style Police (a rant) thoolen <th00len@th0lenbot.thorium> - 2011-10-01 21:25 -0400
                Re: Style Police (a rant) Retahiv Oopsiscame <roopsisc@gmail.com> - 2011-10-05 06:23 -0700
                Re: Style Police (a rant) Cthun <cthun_117@qmail.net.au> - 2011-10-05 10:01 -0400
              Re: Style Police (a rant) Retahiv Oopsiscame <roopsisc@gmail.com> - 2011-09-12 21:58 -0700
            Re: Style Police (a rant) "Cthun" <cthun_117@qmail.net.au> - 2011-09-12 04:52 -0400
              Re: Style Police (a rant) Cthun <cthun_117@qmail.net.au> - 2011-09-12 05:14 -0400
                Re: Style Police (a rant) "Cthun" <cthun_117@qmail.net.au> - 2011-09-12 06:42 -0400
                Re: Style Police (a rant) Cthun <cthun_117@qmail.net.au> - 2011-09-12 07:20 -0400
                Re: Style Police (a rant) "Cthun" <cthun_117@qmail.net.au> - 2011-09-12 08:46 -0400
                Re: Style Police (a rant) thoolen <th00len@th0lenbot.thorium> - 2011-09-12 21:03 -0400
          Re: Style Police (a rant) Tom Anderson <twic@urchin.earth.li> - 2011-09-12 20:18 +0100
        Re: Style Police (a rant) Wanja Gayk <brixomatic@yahoo.com> - 2011-09-11 21:20 +0200
          Re: Style Police (a rant) Lew <lewbloch@gmail.com> - 2011-09-11 13:52 -0700
      Re: Style Police (a rant) Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-09-12 00:17 +0000
  Re: Style Police (a rant) Arne Vajhøj <arne@vajhoej.dk> - 2011-09-10 21:32 -0400
    Re: Style Police (a rant) Wanja Gayk <brixomatic@yahoo.com> - 2011-09-11 13:27 +0200
      Re: Style Police (a rant) Arne Vajhøj <arne@vajhoej.dk> - 2011-09-11 11:05 -0400
    Re: Style Police (a rant) Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-09-11 13:23 +0000
      Re: Style Police (a rant) Eric Sosman <esosman@ieee-dot-org.invalid> - 2011-09-11 10:04 -0400
        Re: Style Police (a rant) Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2011-09-11 12:45 -0300
          Re: Style Police (a rant) Arne Vajhøj <arne@vajhoej.dk> - 2011-09-11 16:53 -0400
            Re: Style Police (a rant) Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-09-14 12:30 +0000
              Re: Style Police (a rant) Eric Sosman <esosman@ieee-dot-org.invalid> - 2011-09-14 20:47 -0400
                Re: Style Police (a rant) Lew <lewbloch@gmail.com> - 2011-09-14 18:06 -0700
                Re: Style Police (a rant) Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-09-15 10:06 +0000
                Re: Style Police (a rant) blmblm@myrealbox.com <blmblm.myrealbox@gmail.com> - 2011-09-20 11:28 +0000
                Re: Style Police (a rant) Eric Sosman <esosman@ieee-dot-org.invalid> - 2011-09-20 07:36 -0400
                Re: Style Police (a rant) Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-09-20 13:04 +0000
                Re: Style Police (a rant) Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2011-09-20 20:34 -0300
              Re: Style Police (a rant) Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2011-09-14 22:33 -0300
                Re: Style Police (a rant) Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-09-15 13:46 +0000
              Re: Style Police (a rant) Arne Vajhøj <arne@vajhoej.dk> - 2011-09-14 21:40 -0400
      Re: Style Police (a rant) Arne Vajhøj <arne@vajhoej.dk> - 2011-09-11 10:59 -0400
        Re: Style Police (a rant) Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-09-11 21:25 +0000

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