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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> <slrnj7cdtu.6gl.avl@gamma.logic.tuwien.ac.at>
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Date: 18 Sep 2011 18:29:37 GMT
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Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> wrote:
> 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?

Alternatively, leave the line "Child c = new Child();" in, and rather
add another line "c.test()" to the end of GrandChild's main method.