Example: Sum of Digits using Recursion in Java

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// Sum of Digits using Recursion
import java.util.Scanner;

// Main class containing the entry point of the program
public class Main {
    public static int sumDigitsRecursive(int number) {
        if (number == 0) {
            return 0;
        }
        return (number % 10) + sumDigitsRecursive(number / 10);
    }

    public static void main(String[] args) {
        // Step 1: Get input number from the user
        Scanner scanner = new Scanner(System.in);
        System.out.print("Enter a number: ");
        int num = scanner.nextInt();

        // Step 2: Calculate sum of digits using recursion
        int sum = sumDigitsRecursive(num);

        // Step 3: Print the result
        System.out.println("Sum of digits (recursive): " + sum);

        scanner.close();
    }
}