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That is exactly what i meant. Thanx again.

               Vladimir


"Steve Schafer (TeamB)" wrote:
> 
> On Sat, 28 Nov 1998 00:20:41 +0300, Vladimir Olenin
> <keenonjava@collegemail.com> wrote:
> 
> >Other days i figure the problem out. I've attached minimal code to this
> >letter. The problem was that when Data class (in the attached files it's
> >pack.class) had only static fields, then it was possible to intitialize
> >the fields only, without intitializing class. That's why pointer to that
> >class was null.
> 
> To clarify the terminology: Static fields are associated with a class,
> while other "normal" fields are associated with an _instance_ of a
> class. In order to create an instance of that class, you have to use
> the "new" operator. You use the expression "pointer to that class,"
> but that's not correct. Your pointer was not a pointer to the class,
> it was a pointer to an _instance_ of that class. Since you had never
> used the "new" operator, no instance was ever created, and that's why
> the pointer was null. Because the static variables were associated
> with the class itself (which already existed), you could access them
> without any problem.
> 
> By the way, it is possible to initialize a class itself; you can do
> this with a static initialization section:
> 
>  public class Foo {
> 
>    ...
> 
>    static {
>      // class initialization goes here
>      }
> 
>    }
> 
> -Steve

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