Fields are not polymorphic

class Base {
    String name = "base";

    String getName() {
        return name;
    }
}

class Derived extends Base {
    String name = "derived";

    @Override
    String getName() {
        return name;
    }
}

public class Main {
    public static void main(String[] args) {
        Base b = new Derived();
        System.out.println(b.name);
        System.out.println(((Derived) b).name);
        System.out.println(b.getName());
    }
}