From: Ged Byrne <gedb01@...>
Date: 2003-08-22T07:08:40+09:00
Subject: Re: Class variables - a surprising result

My earlier post showed that Java's static variables
behave exactly the same way.  The only difference is
that Java offers a few more choices:

- Make the variable private so that it isn't
inherited.

- Override the variable in an ancestor by DECLARING it
afresh.  However, you still have to be careful because
any inherited methods will refer to the Static
variable in the base class.


 --- Michael Campbell <michael_s_campbell@yahoo.com>
wrote: > > > As far as I know, C++ and Java do not
have class
> variables.  They have
> > > static member variables,
> >
> > .. . . which are not inherited, which is why it is
> surprising to many
> > that  Ruby's @@variables are inherited.
> 
> 
> What do you mean by "not inherited"...  I'm sure
> you're correct, but I'm
> confused:
> 
> C:\tmp>cat Sub.java
> 
> class Base {
>     static int B = 1;
> }
> 
> public class Sub extends Base {
>     public static void main(String[] args) {
>         System.out.println("Sub.B = " + Sub.B);
>     }
> }
> 
> 
> C:\tmp>javac Sub.java
> 
> C:\tmp>java Sub
> 
> Sub.B = 1
> 
>  

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