class A {
protected class InnerA
{
public InnerA()
{
System.out.println("A.InnerA()");
}
public void f()
{
System.out.println("A.InnerA.f()");
}
}//innerA end
private InnerA y = new InnerA();
public A()
{
System.out.println("New A()");
}
public void insertYolk(InnerA yy)
{
y = yy;
}
public void g()
{
y.f();
}
}//class A ending
class B extends A
{
public class InnerB extends A.InnerA
{
public InnerB()
{
System.out.println("B.InnerB()");
}
public void f()
{
System.out.println("B.InnerB.f()");
}
}//Inner B ending
public B()
{
insertYolk(new InnerB());
}
}//class B ending
public class MainClass
{
public static void main(
String[] args)
{
A e2 = new B();
e2.g();
}
}//end of mainClass
I expected o/p as
newA()
B.innerB()
A.innerA.f()
because when "A e2 = new B()" is executed
the constructor A() is executed first, printing
"new A()"
then B() is called,which creates an instance of 'Inner B" thus printing
"B.inner B()"
Coming to second statement in "main" when it executes "e2.g"
g() in A is called,which inturn calls the method "f()" on innerclassA instance and printing
A.InnerA.f()
But the actual o/p is
A.InnerA()
New A()
A.InnerA()
B.InnerB()
B.InnerB.f()
Can anybody please explain this program's flow?