How to create a subclass of a nested class ?

Question

I have code like this:
public class A {
public class Inner { }
how can I create a subclass of A.Inner ?
I got an error when I declare:
public class subInner extends A.Inner {}

Answer 1

I have code like this:
public class A {
public class Inner { }
how can I create a subclass of A.Inner ?
I got an error when I declare:
public class subInner extends A.Inner {}the subInner class must have the following constructor
subInner( A a )
    a.super();
}whenever u want to create an object of SubInner, use the followng
new SubInner(new A() )
Reason is :. When u want to create an object of "subclass", its superclass should also be called; the superclass is Inner. The class Inner needs an instance of outer class (A) to bind to.
regards