class A 
                         {
                           protected int i;
                           A(int i) 
                           {
                             this.i = i;
                           }
                         }
Which of the following would be a valid inner class            for this class? Select all valid answers. 
                           A.class B {}
                           B.class B extends A {}
                           C.class B 
                              {
                                B() 
                                { 
                                  System.out.println("i = " + i);
                                }
                              }
                           D.class B 
                              {
                                class A {}
                              }
                           E.class A {}

IMO there is no default (no arg) constructor in class A

then how come ans c) is correct? constructor in class B which is also no arg constructor will try to call default constructor in A? then why ans b) is wrong??

Maha , Jim i need your help here,
thank you

------------------

The ans. given are correct and your thinking is also correct. But you didn't apply it properly I think. Please read the ans carefully. ans b) is wrong because this is the one which extends class A and needs the A() in A class. Since it is not there in A, this ans is wrong.
Ans c) is correct because This is just an ordinaryinner class which does not extend A. It is perfectly fine.

Please refer to this. I also request all to use the 'search' facility liberally at the top-right of every page.
regds
maha anna