Inheritance, variable scope and shadowing

[Francisco Montes]

Hi everybody,

I am testing a few concepts about variable scope and accesibility to shadowed variables from subclasses.
My question is, given the following code, is there a way to access the SuperSuperClass´s string from the commented line?

Thank you!

 
interface InterfaceOne {
    public static final String s = "InterfaceOne (s)";
    public abstract void theMethod(String a);
}
interface InterfaceTwo {
    public static final String s = "InterfaceTwo (s)";
    public abstract void theMethod(String a);
}

class SuperSuperClass {
    public String s = "SuperSuperClass (s)";
}

class SuperClass extends SuperSuperClass {
    public String s = "SuperClass (s)";
}

public class MultipleInterfaceInheritance extends SuperClass implements InterfaceOne,InterfaceTwo {
    public String s = "Instance (s)";
    public void theMethod(String a) {
        String s = "Local (s)";
        System.out.println(InterfaceOne.s);
        System.out.println(InterfaceTwo.s);
        System.out.println(this.s);
        System.out.println(s);
        System.out.println(super.s);
        // Can we access and print SuperSuperClass (s) ??
    }

    public static void main(String... args) {
        new MultipleInterfaceInheritance().theMethod("");
    }
}

[Seetharaman Venkatasamy]

    

SuperSuperClass superSuperClass = new MultipleInterfaceInheritance();//or new SuperClass();
System.out.println(superSuperClass.s);

[Vijay Raj]

You don't even have to instantiate the SuperSuperClass. Just do the following -

    
SuperSuperClass ssc = (SuperSuperClass) this;
System.out.println(ssc.s);

Regards.

[Francisco Montes]

Thanks a lot seetharaman.

I was looking for a more "direct way"... something like System.out.println(super.super.s); (I know that it doesn´t even compile but i hope you see what i mean).

From your reply i take that there is no way to access property s in SuperSuperClass from where i was trying to do it.

If I do it the way you suggest, I would be creating another instance of an object and I would be accesing a different value of SuperSuperClass s which is not really what i was looking for.

Does it makes sense?

[Francisco Montes]

Spot on Vijay!

Now i know that i need to use casting to reach a shadowed variable at that level.

Thanks a lot!