HideInstanceVariable.java

class HideInstanceVariable {
    public static void main(String[] args) {
        Car car = new SportCar();
        System.out.println(car.getSpeedMax());
    }
}

class Car {
    private int speedMax = 150;

    public int getSpeedMax() {
        return speedMax;
    }
}

class SportCar extends Car {
    private int speedMax = 300;

    @Override
    public int getSpeedMax() {
        return speedMax;
    }
}