How to implement such kind of codes

class A{
protected int getVal() { return 2; }
protected int getValue() { return getVal(); }
}
class B extends A {
protected int getVal() { return 4; }
public int getValue() {
return getVal() + this.getVal() + super.getVal() + super.getValue();
}
}
class C extends B {
public int getVal() { return 8; }
public int getValue() {
return super.getVal() + getVal() + super.getValue() + this.getVal();
}
}

hey guys I was given the above peace of code in my Quize And I was asked, when we call the method getValue() from class C then what value will we get. well my answer was 4 + 8 + [8 + 4 + 2 + 2] + 8 = 36 which turns out to be false :eek: ( The right answer is 46 THEY TOLD ME) . I tried to implement the above mentioned code on my computer but it doesn't work. :confused:

What I did at home is create 3 Classes A, B, C and then put the main method in Class C (which is used to run the code) but it doesn't seem to work. This is what I did in class C

public class C extends B{
public int getVal() { return 8; }
public int getValue() {
return super.getVal() + getVal() + super.getValue() + this.getVal();
}

public static void main(String[] args){
System.out.println("the real value is "+ getValue());
}
}


Can anyone explain to how to implement such types of codes for testing?? Would really your help!!!

first, you must instantiate the class
C whatEverVariables = new C();
then, print out whatEverVariables.getValue()

WOW!!! it was that easy... Can't believe why didn't I think of that... Thanks a lot man..

If you didn't think of that, perhaps it would be a good time to read up on the difference between static and non-static methods and objects in general. These are the basics you need to understand before you can do more complex stuff. Much luck!

Do you understand why 46 is the correct answer now?

got it?
if not, learn more about overriding