FXP Challange - Combine Arrays

package com.rexybaddog;
import java.util.Arrays;
public class SortAndCombineArray {
    public static void main(String[] args) {
        int[] arr1 = {-11,-3,5,7,15,20,21,103};
        int[] arr2 = {-6,4,6,8,9,10,14,15,16,100,101,102};
        int[] combineArr = sortAndCombo(arr1, arr2);
        System.out.println(Arrays.toString(combineArr));
    }

    private static int[] sortAndCombo(int[] arr1, int[] arr2) {
        int[] finalArr = new int[arr1.length + arr2.length];
        int i = 0, j = 0, k = 0;
        while (j < arr1.length && k < arr2.length) {
            if (arr1[j] < arr2[k]) {
                finalArr[i] = arr1[j];
                j++;
                i++;
            } else {
                finalArr[i] = arr2[k];
                k++;
                i++;
            }
        }
        while (j < arr1.length) {
            finalArr[i] = arr1[j];
            j++;
            i++;
        }
        while (k < arr2.length) {
            finalArr[i] = arr2[k];
            k++;
            i++;
        }
        return finalArr;
    }
}