Don't understand Inner Classes and how to use it

Question

Hi
As you guess i 'am a newbie!
I don't understand Inner Classes, particulary members(methods & fields) that an Inner method is able to manipulate.
So I know that the methods of an Inner class (respectively Outer Class) instance can access members (private or public) of an instance of the Outer Class (respectively Inner Class).
I tried to answer to a quizz : http://java.sun.com/developer/onlineTraining/new2java/supplements/quizzes/January03.html
In the following class definition, which variables are inaccessible within the method of the inner class?
class Test1 {
   public static int a = 1;
   private static int b = 2;
   public int c = 3;
   private int d = 4;
   public static class Inner {
     int e = 5;
     public void aMethod(int f) {
       int g = 6;
       // What can't be accessed here?
}A.      b, c, d
B.      c, d
C.      b, c, d, f
D.      None of them
In my opinion members (public or private) of the Outer Class can be accessed by methods of the Inner Class; e.g: a, b, c,d thus for me the answer is D.
Obviously i'm wrong, but why?

Answer 1

Hi
As you guess i 'am a newbie!
I don't understand Inner Classes, particulary
members(methods & fields) that an Inner method is
able to manipulate.
So I know that the methods of an Inner class
(respectively Outer Class) instance can access
members (private or public) of an instance of the
Outer Class (respectively Inner Class).
I tried to answer to a quizz :
http://java.sun.com/developer/onlineTraining/new2java/
supplements/quizzes/January03.html
In the following class definition, which variables
are inaccessible within the method of the inner
class?
class Test1 {
public static int a = 1;
private static int b = 2;
public int c = 3;
private int d = 4;
public static class Inner {
int e = 5;
public void aMethod(int f) {
int g = 6;
// What can't be accessed here?
}A.      b, c, d
B.      c, d
C.      b, c, d, f
D.      None of them
In my opinion members (public or private) of the
Outer Class can be accessed by methods of the Inner
Class; e.g: a, b, c,d thus for me the answer is
D.
Obviously i'm wrong, but why?Inner class method can access all the private members of the class. But the inner class is static. So the non-static members cannot be accessed directly (i.e. c and d).
***Annie***