I’m currently learning the basics of Java with the MOOC Java Programming II. I’ve reached this quiz but I don’t understand why the program is supposed to print 8 instead of 2.

Could somebody please explain it to me?

public class Counter {

    public int addToNumber(int number) {
        return number + 1;
    }
    
    public int subtractFromNumber(int number) {
        return number - 1;
    }
}

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public class SuperCounter extends Counter {

    @Override
    public int addToNumber(int number) {
        return number + 5;
    }
    
}

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public static void main(String[] args) {
    Counter counter = new Counter();
    Counter superCounter = new SuperCounter();
    int number = 3;
    number = superCounter.subtractFromNumber(number);
    number = superCounter.subtractFromNumber(number);
    number = counter.addToNumber(number);
    System.out.println(number);
}