Inheritance of final fields in Java?

Question

What happens when a superclass has a field marked final, but a subclass overrides (hides?) this field? \'Final\' doesn\'t stop this, does it? The specific example I\'m work

Answer 1

You can do this two ways: make an accessor function and hide the field itself or else pass the building cost to the superclass constructor from the subclass. You can combine these and make a property that can't be overridden by subclasses:

public class Building {
    private final int cost;

    protected Building(int cost, ...) {
        this.cost = cost;
    }

    public final int getCost() {
        return cost;
    }
}

public class Cottage extends Building {
    public Cottage() {
        super(COTTAGE_COST, ...);
    }
}