Calculate to Gabriela

import java.util.ArrayList;

public class Main {

    public static void main(String[] args) {
        // Example given: 3 to 10.
        int min = 3;
        int max = 10;
        Integer result = sum(min, max);
        System.out.println("The result is: " + result);
    }

    public static Integer sum(int min, int max) {
        ArrayList<Integer> intArray = new ArrayList();
        for (Integer i = min+1; i < max; i++) {
            intArray.add(i);
        }
        Integer sum = 0;
        for (Integer j : intArray) {
            sum = sum + j;
        }
        return sum;
    }

}