Compare two char[] arrays for characters they do not have in common.

ArrayCompare.java

import java.util.ArrayList;

public class Main {


    public static void main(String[] args) {
        char[] arrayA = {'a', 'e', 'i', 'o'};
        char[] arrayB = {'i', 'o', 'u', 'y'};

        ArrayList<Character> aList = new ArrayList<Character>();
        ArrayList<Character> bList = new ArrayList<Character>();
        ArrayList<Character> differences = new ArrayList<Character>();

        for (char item : arrayA) {
            aList.add(item);
        }

        for (char item : arrayB) {
            bList.add(item);
        }

        for (char item : arrayA) {
            if (!bList.contains(item)) {
                differences.add(item);
            }
        }

        for (char item : arrayB) {
            if (!aList.contains(item)) {
                differences.add(item);
            }
        }

        System.out.println(differences);
    }
}