What is the output of the following code?

Problem statement: 
Given the code of java. Can you tell me the output of this?

1. interface Annonymous {
2.     public int getValue();
3. }
4. public class Sample1 {
5.     int data = 15;
6.     public static void main(String[] args) {
7.         Annonymous a = new Annonymous() {
8.             int data = 5;
9.             public int getValue() {
10.                 return data;
11.             }
12.             public int getData() {
13.                 return data;
14.             }
15.         };
16.         Sample1 s = new Sample1();
17.         System.out.println(a.getValue() + a.getData() + s.data);
18.     }
19. }

Output:
compilation error at line number 17 due to a.getData(). Here getData() is not a method of Annonymous interface.