What is the output of the following program?

import java.util.*;

public class Main {
    public static int recursiveProduct(ArrayList<Integer> list, int index) {
        if(index >= list.size()) return 1;
        return list.get(index) * recursiveProduct(list, index + 1);
    }

    public static void main(String[] args) {
        ArrayList<Integer> list = new ArrayList<>(Arrays.asList(2, 3, 4));
        System.out.println(recursiveProduct(list, 0));
    }
}