How can i access Class A variable in m1() method directly?

Question

class A {
    int i = 10;
}

class B extends A {
    int i = 20;
}

public class C extends B{
    int i = 30;

    public static void main(String[] args) {
        C c = new C();
        c.m1();
    }

    public void m1() {
        System.out.println(i);       // 30
        System.out.println(super.i); // 20
    }
}

I have a class A, which contains a default variable. I created a child class B which extends class A and one more child class C which extends class B.

I want to access class A variable in child class C m1() method. Is there any direct way to access it?

... why do all those variables have the same name? just give them different names. or, if you need the original value, don't change it — Stultuske, Nov 03 '17 at 09:31
I seems like class A is your mother class so Why you don't extends class A on the class C ? — F0XS, Nov 03 '17 at 09:32
Possible duplicate of [Why is super.super.method(); not allowed in Java?](https://stackoverflow.com/questions/586363/why-is-super-super-method-not-allowed-in-java) — Oleg, Nov 03 '17 at 09:34
@Stultuske I know but in this part of exemple, the class C don't use any method of class B, that's why I suggest to directly use an extends of the A class in C. — F0XS, Nov 03 '17 at 09:37
@FoxCy I assume this code is a very minimalistic example to illustrate what he tries to do, not the complete code he's (trying to be) working with — Stultuske, Nov 03 '17 at 09:38

score 6 · Answer 1 · edited Nov 03 '17 at 11:15

6

change this line

System.out.println(super.i); // 20

to

System.out.println(((A)this).i);

edited Nov 03 '17 at 11:15

Oleg

6,124
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answered Nov 03 '17 at 09:33

Fermat's Little Student

5,549
7
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score 1 · Answer 2 · answered Nov 03 '17 at 09:46

To complicate your life try this:

public void m1() {
    System.out.println(this.i);
    C c = new C();
    Class<? extends Object> cls = c.getClass().getSuperclass().getSuperclass();
    Field[] fields = cls.getDeclaredFields();
    for ( Field field : fields )
    {
        String in = field.getName();
        int iv = field.get((Object)c);
        System.out.println(iv);
    }
}

How can i access Class A variable in m1() method directly?

2 Answers2