This code does compile and run. I've added some more features to the three
classes so that you can actually determine which method is being called. I
personally didn't think that "class C extends A.B" would extend class  B, but
it does. I didn't realize that you could extend an inner class in this
manner. It does show that the a.super() call  is not needed and does not
have an effect.

-Fred E Golder

public class A
{
int value = 1;
A()
{
value *= 10;
System.out.println("in A constructor");
}
int test() { return  ++value; }
int show() { return value; }

class B
{
int test() { return value/5; }
}

public static void main(String[] args)
{
A aaa = new A(); //expect value = 10
System.out.println("value is "+aaa.show()); //expect value =10
System.out.println("Test returns"+aaa.test()); //expect value = 11
C ccc = new C(aaa);
}
}

class C extends A.B
{
C(A a)
{
a.super();//expect there is no effect & optimized out of byte code
System.out.println("in C constructor");
System.out.println("Test returns"+a.test()); //expect value = 12
System.out.println("Test returns"+test()); //expect value = 2
}
}