JAVA String转String数组 String转int String转List「Integer」

String ids = "1,2,3,4,5,6";
String[] iidsStrings = ids.split(",");//转成String数组
int[] array = Arrays.stream(iidsStrings).mapToInt(Integer::parseInt).toArray();//转int数组
List list2 = Arrays.stream(array).boxed().collect(Collectors.toList());//转List