Java interview questions Part25

14.
Given:

class Bird {
{ System.out.print("bl "); }
public Bird() { System.out.print("b2 "); }
}
class Raptor extends Bird {
static { System.out.print("r1 "); }
public Raptor() { System.out.print("r2 "); }
{ System.out.print("r3 "); }
static { System.out.print("r4 "); }
}
class Hawk extends Raptor {
public static void main(String[] args) {
System.out.print("pre ");
new Hawk();
System.out.println("hawk ");
}
}

What is the result?

pre b1 b2 r3 r2 hawk

pre b2 b1 r2 r3 hawk

pre b2 b1 r2 r3 hawk r1 r4

r1 r4 pre b1 b2 r3 r2 hawk

r1 r4 pre b2 b1 r2 r3 hawk

pre r1 r4 b1 b2 r3 r2 hawk

pre r1 r4 b2 b1 r2 r3 hawk

The order of output cannot be predicted.

Compilation fails.