Java Quiz

I found a dirty peace of code and made a small quiz out of it.

What is the result of the following code?

I encountered twice the construction of a inner class

Outter.Inner in = out.new Inner();

but only in books. I never had any use of such a construct.

If you don't find out just try it :)

class Outter {
private int value;
private Inner in = new Inner();

Outter() {
    value = 41;
}

void print() {
    in.print();
}

class Inner {

    Inner() {
        print();
    }

    void print() {
        System.out.println(value++);
    }
}
}

public class Main {
public static void main(String[] args) {
    Outter out = new Outter();
    out.print();

    Outter.Inner in = out.new Inner();
    in.print();
}
}