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Re: Learning Java

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From Lew <lewbloch@gmail.com>
Newsgroups comp.lang.java.programmer
Subject Re: Learning Java
Date Wed, 18 Apr 2012 10:19:08 -0700 (PDT)
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Arved Sandstrom wrote:
> I can almost hear Lew chiming in. To forestall that, I'll reiterate, I'm
> pointing out to the OP that when inspecting _real_ Java that he should
> be careful about what's good OO and what is merely *technically* OO.

Far be it from me to disappoint my fans.

Arved's right, in that by a distinguishing definition of object-oriented. that is, one that sets it apart from "pre-"object-oriented styles, much Java code in the real world is not OO. The trivial definition, Arved's “merely *technically* OO”, doesn't much help one distinguish not very OO from very OO.

The question is, "So what?" 

So, "OO" shouldn't be a religion, but a measuring stick to help evaluate code quality. What we're really after here are best practices to organize code so that it's bug free, provably correct, inexpensively maintainable and magically satisfying to the customer. Taken together, such practices result in something arguably "object oriented" irrespective of source language.

But your object orientation is only ever as good as your analysis, and your implementation strategy to reduce state coupling and cogent modeling of the problem domain.

Same as procedural code that way.

So avoid the sorts of sins Arved described ("God classes", spaghetti code disguised as methods and so on), be aware of the valid (non-buzzwordy) virtues of OO, or generally of good code, and cast a jaundiced eye on real-world code and pedagogical examples alike.

Thanks for making the distinction, Arved.

-- 
Lew

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Thread

Learning Java Steve Graham <jsgrahamus@yahoo.com> - 2012-04-17 15:03 -0600
  Re: Learning Java markspace <-@.> - 2012-04-17 14:33 -0700
    Re: Learning Java glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2012-04-17 21:50 +0000
      Re: Learning Java Arne Vajhøj <arne@vajhoej.dk> - 2012-04-17 19:21 -0400
      Re: Learning Java markspace <-@.> - 2012-04-17 16:47 -0700
        Re: Learning Java glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2012-04-18 02:30 +0000
          Re: Learning Java Arne Vajhøj <arne@vajhoej.dk> - 2012-04-28 21:56 -0400
      Re: Learning Java Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2012-04-17 21:07 -0300
        Re: Learning Java Arne Vajhøj <arne@vajhoej.dk> - 2012-04-17 22:06 -0400
          Re: Learning Java Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2012-04-18 07:11 -0300
            Re: Learning Java Leif Roar Moldskred <leifm@dimnakorr.com> - 2012-04-18 06:47 -0500
            Re: Learning Java Lew <lewbloch@gmail.com> - 2012-04-18 10:19 -0700
              Re: Learning Java Lew <lewbloch@gmail.com> - 2012-04-18 10:20 -0700
            Re: Learning Java glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2012-04-18 21:10 +0000
            Re: Learning Java Gene Wirchenko <genew@ocis.net> - 2012-04-18 15:01 -0700
            Re: Learning Java Arne Vajhøj <arne@vajhoej.dk> - 2012-04-28 22:11 -0400
              Re: Learning Java Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2012-04-29 11:00 -0300
                Re: Learning Java Lew <noone@lewscanon.com> - 2012-04-29 11:44 -0700
                Re: Learning Java markspace <-@.> - 2012-04-29 16:34 -0700
                Re: Learning Java Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2012-04-30 20:52 -0300
                Re: Learning Java Arne Vajhøj <arne@vajhoej.dk> - 2012-05-05 18:17 -0400
                Re: Learning Java Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2012-05-06 15:49 -0300
                Re: Learning Java Gene Wirchenko <genew@ocis.net> - 2012-05-07 09:50 -0700
      Re: Learning Java RedGrittyBrick <RedGrittyBrick@spamweary.invalid> - 2012-04-19 15:30 +0100
  Re: Learning Java Arne Vajhøj <arne@vajhoej.dk> - 2012-04-17 19:26 -0400
  Re: Learning Java Patricia Shanahan <pats@acm.org> - 2012-04-17 19:08 -0700
  Re: Learning Java Roedy Green <see_website@mindprod.com.invalid> - 2012-04-26 16:06 -0700
  Re: Learning Java Steve Graham <jsgrahamus@yahoo.com> - 2012-05-15 17:40 -0600

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