Title: AW: AW: (ROSE) Question Export control of Method

You don�t stop it. But another method m2() in SuperClass can�t be accessed, while it isn�t implemented in CommonMethodsImpl.


mit freundlichen Gr��en
Jan Mat�rne

RZF NRW
Sachgebiet 314-P Methodenberatung
Internet:       [EMAIL PROTECTED]


    -----Urspr�ngliche Nachricht-----
    Von:    [EMAIL PROTECTED] [SMTP:[EMAIL PROTECTED]]
    Gesendet am:    Freitag, 4. Januar 2002 10:57
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    Betreff:        Re: AW: (ROSE) Question Export control of Method
    Wichtigkeit:    Hoch


    in response to Jan...

    but how would u still stop the an instance of the child class
    Sub from calling the inherited m1() method?

    i am not sure the original question is a valid one in the first place?  how is
    it possible that a method declared public/protected by a parent class be NOT
    accessible by child class?

    this would throw the entire concept of inheritance out of the window?

    Anil, are you sure u have got ur requirements correctly mapped?

    best,
    -Piyush

    _________________________Reply Separator_________________________

    Jan Materne wrote:

    OK: you want to have methods in a (super)class which can be
    accessed by "normal" classes but can't by subclasses?

    As far as I know, there is no (direct) way. But you can use
    "delegation" for it:

    public interface CommonMethods {
      public int m1(int a);
    }

    public class CommonMethodsImpl implements CommonMethods {
      public int m1(int a) {
        // Implementation goes here
        return a;
      }
    }

    public class Super implements CommonMethods {
      // for delegation
      private CommonMethods cm = new CommonMethodsImpl();

      // the delegation
      public int m1(int a) {
        return cm.m1(a);
      }
    }

    public class Sub extends CommonMethods {
      // normal implementation
    }

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