Why this program is generating the exception?

Question

Why this program is generating the exception??

public class R {
String s = "RA!";
R A;
R(){
System.out.print(A.s);
}

}
class test
{
public static void main(String [] g)
{
R B = new R();

}
}

Answer 1

Because the constructor for A is currently running and A hasn't been assigned as yet so it is null.

Answer 2

Forget my previous post. If that were true, I should have gotten two outputs not one. It is because A is uninitialized as you need to assign this to it.