Hi,
Here the code and explanation from Exam cram mock
test In the following code for a class in which methodA has an inner class
1. public class Base {
2. private static final int ID = 3; //final variable
3. public
String name; // public variable
4. public void methodA( int nn ){ //nn is arg not final
5. final int serialN = 11; //final variable
6. class inner { //innner class start here
7. void showResult(){
8. System.out.println( "Rslt= " + XX );
9. }
10. } // end class inner
11. new inner().showResult();
12. } // end methodA
13. )
which variables would the statement in line 8 be able to use in place of XX? [Check all correct answers]
A) The int ID in line 2
B) The String name in line 3
C) The int nn in line 4
D) The int serialN in line 5
Answer
A is correct: The int ID in line 2
B is correct: The String name in line 3
D is correct: The int serialN in line 5
Explanation Answers a, b, and d are correct. Answers a and b are correct because inner classes can access any static or member variable in the enclosing class. Answer d is correct because, although it is a local variable, it is declared final. Answer c is incorrect because the local variable nn is not declared final. This special usage of the keyword final causes the compiler to provide storage for this variable in a permanent location. This is necessary because an inner class object created in a method may outlive the method.
Hope it will help
Best Regards
Avi
