Implementig integer add operation with ArrayList without any usages of arithmetic operations

AddWithoutArithmeticOperator.java

import java.util.ArrayList;
import java.util.Scanner;

public class AddWithoutArithmeticOperator {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int numberOne = scanner.nextInt();
        int numberTwo = scanner.nextInt();
        int[] firstIntArray = new int[numberOne];
        int[] secondIntArray = new int[numberTwo];
        System.out.println(merge(firstIntArray, secondIntArray));

    }

    private static int merge(int[] one, int[] two) {
        ArrayList<Integer> combinedArray = new ArrayList<Integer>();
        for ( int n : one) combinedArray.add(n);
        for ( int n : two) combinedArray.add(n);
        return combinedArray.size();

    }
}