Groups > comp.lang.java.programmer > #8133

Re: super

Newsgroups	comp.lang.java.programmer
From	Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at>
Subject	Re: super
References	<3e87dcf3-6842-41bf-8eb8-0c4181a178a9@k1g2000vbz.googlegroups.com> <j55ad2$o2g$1@dont-email.me>
Message-ID	<slrnj7cdtu.6gl.avl@gamma.logic.tuwien.ac.at> (permalink)
Date	2011-09-18 18:26 +0000

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Joshua Cranmer <Pidgeot18@verizon.invalid> wrote:
> On 9/18/2011 11:53 AM, giuseppe.on.usenet wrote:
>> When I run dir2.Child, I get:
>> var is 1
>> which is what I was expecting.
>> When I run dir2.GrandChild, I get:
>> super.var is 2
>> var is 2
>> These last two variables have the same value, although I only modified
>> gc.var in GrandChild.java. Why?
> How many times did you declare a variable named `var'? By my count, you 
> defined it once, so `var' and `super.var' both refer to the same 
> variable `var', namely the one defined in Parent.

I think the misunderstanding is far more basic.

To giuseppe:

In dir2.GrandChild's main, just remove the line, where you instantiate
Child, and leave the rest exactly as is.  Recompile & run it.  You'll
see that instantiating class Child (or not doing it) doesn't change
anything. What does this tell you?

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super "giuseppe.on.usenet" <giuseppe.on.usenet@gmail.com> - 2011-09-18 09:53 -0700
  Re: super Joshua Cranmer <Pidgeot18@verizon.invalid> - 2011-09-18 12:39 -0500
    Re: super Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-09-18 18:26 +0000
      Re: super Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-09-18 18:29 +0000
      Re: super "giuseppe.on.usenet" <giuseppe.on.usenet@gmail.com> - 2011-09-18 12:21 -0700
        Re: super Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-09-18 19:48 +0000
          Re: super Lew <lewbloch@gmail.com> - 2011-09-18 13:16 -0700

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