super Keyword

AP Computer Science A· difficulty 3/5

public class A {
    public String describe() { return "A"; }
}
public class B extends A {
    public String describe() { return super.describe() + "B"; }
}
public class C extends B {
    public String describe() { return super.describe() + "C"; }
}
// Usage:
A obj = new C();
System.out.print(obj.describe());

What is printed?

A
$AC$
B
$C$
C
$ABC$
check_circle
D
$CBA$

Explanation

C calls super.describe (B's), which calls super.describe (A's = "A"), then appends "B" \to "AB", then appends "C" \to "ABC".

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