class A {
    A getThis() {System.out.println("call getThis() from A"); return this;} //(3)
    Object getSuper() {System.out.println("call getSuper() from A"); return null;}
}

class B extends A {
    B getThis() {System.out.println("call getThis() from B"); return this;}
    A getSuper() {System.out.println("call getSuper() from B"); return super.getThis();}
}

class Tester {
    public static void main (String[] args) {
        Object a = new B().getSuper(); //(1)
        System.out.println(a);
        a = new B().getSuper().getSuper(); //(2)
        System.out.println(a);
    }
}

static class A {
    A getThis() {System.out.println("call getThis() from A"); return this;} //(3)
    Object getSuper() {System.out.println("call getSuper() from A"); return null;}
}

static class B extends A {
    B getThis() {System.out.println("call getThis() from B"); return this;}
    A getSuper() {System.out.println("call getSuper() from B"); return super.getThis();}
}