Consider the following class. What is printed when the main method is executed?

public class SumSquares {
    public static int sumSquares(int n) {
        if(n == 0) {
            return 0;
        }
        return n * n + sumSquares(n - 1);
    }
    public static void main(String[] args) {
        System.out.println(sumSquares(3));
    }
}