Compile error: Animal has no fetch()

Creating References Using Inheritance Hierarchies

AP Computer Science A· difficulty 3/5

public class Animal {}
public class Dog extends Animal {
    public String fetch() { return "fetched"; }
}
// Usage:
Animal a = new Dog();
String result;
if (a instanceof Dog) {
    Dog d = (Dog) a;
    result = d.fetch();
} else {
    result = "no";
}
System.out.print(result);

What is printed?

A
$fetched$
check_circle
B
$Compile error: Animal has no fetch()$
C
$ClassCastException at runtime$
D
$no$

Explanation

Since a is actually a Dog, the instanceof check passes, and the downcast (Dog) a succeeds. fetch() returns "fetched".

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