What is the result of this code?

1: class Main {
2:     Object message() {
3:         return "Hello!";
4:     }
5:     public static void main(String[] args) {
6:         System.out.print(new Main().message());
7:         System.out.print(new Main2().message());
8:     }
9: }
10: class Main2 extends Main {
11:     String message() {
12:         return "World!";
13:     }
14: }