string类型字符串去除两个字符串中相同的数据

public static void main(String[] args) {
String str=“112,113,114,115,478,602,662”;
String str1=“112,113,114”;
//字符串切割
String[] arr = str.split(",");
String[] arr1 = str1.split(",");
//string转换成int
int[] array = Arrays.asList(arr).stream().mapToInt(Integer::parseInt).toArray();
int[] array1 = Arrays.asList(arr1).stream().mapToInt(Integer::parseInt).toArray();
List list = mergeArray(array, array1);

int size = list.size();
int[] arrNew = new int[size];
for (int i =0; i < size; i ++) {
    arrNew[i] = list.get(i);
}
for (int i =0; i < size; i ++) {
    System.out.println(arrNew[i]);
}

}

public static List<Integer> mergeArray(int[] arr, int[] arr1) {
    // int[] 转List  boxed: 装箱：将基本类型转成包装类
    List<Integer> list = Arrays.stream(arr).boxed().collect(Collectors.toList());
    List<Integer> list1 = Arrays.stream(arr1).boxed().collect(Collectors.toList());
    List<Integer> listAll = new ArrayList<>();
    listAll.addAll(list);
    listAll.addAll(list1);
    list1.retainAll(list);
    listAll.removeAll(list1);
    return listAll;

     }
}