public class Base {
    public String name = "Base0";
    public String diffName = "Base1";

    Base() {
        this.name = "Base";
    }

    public static void main(String[] args) {
        Sub s = new Sub();
        Base b = s;
        System.out.println(s.name);
        System.out.println(b.name);
        System.out.println(s.diffName);
        System.out.println(b.diffName);
    }
}
class Sub extends Base {
    public String diffName = "Sub1";

    Sub() {
        this.name = "Sub";
    }
}