1/*2 * SumIntegers.java3 *4 * Computer Science E-22/S-225 *6 * A class that contains a recursive method for computing the sum of the7 * integers from 1 to n.8 *9 * The main method includes two examples of using this method.10 */11 12public class SumIntegers {13 public static int sum(int n) {14 if (n <= 0) { // base case15 return 0;16 } else { // recursive case17 int rest = sum(n - 1); 18 return n + rest;19 }20 }21 22 public static void main(String[] args) {23 int firstSum = sum(3);24 System.out.println("sum(3) = " + firstSum);25 System.out.println("sum(10) = " + sum(10));26 }27}