CODEWITHSUNDEEP
javainheritance
Stubborn
Stubborn

Reputation: 968

Using, if applicable, the subclass' method

I have the following code:

public class A {
    private boolean val(){
        return true;
    }

    protected boolean test(){
        return val();
    }
}

public class B extends A {
    private boolean val(){
        return false;
    }
}

public class C {
    public static void main(String[] args){
        B b = new B();
        System.out.println(b.test());
    }
}

It returns true because the test() method in A calls A's val(). After some research, I understood that this is expected in Java. However, I would like test() to print false when called from B, and true when called from A. Is it possible to do that?

Upvotes: 1

Views: 28

Answers (1)

Eran
Eran

Reputation: 393841

The reason your code calls A's val() and not B's val() is that the val() method has private access modifier and therefore cannot be overridden. Change the access modifier to protected.

public class A {
    protected boolean val(){
        return true;
    }

    protected boolean test() {
        return val();
    }
}

public class B extends A {
    protected boolean val() {
        return false;
    }
}

Upvotes: 2

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