Chapter 9.11, Problem 9.11.1CP

What is wrong in the following code?

1    public class Test {

2    public static void main(String [] args) {

3    java.util.Date[] dates = new java.util. Date[ 10];

4    System.out.println(dates[O]);

5    System.out.println(dates[O] .toString());

6    }

7    }