Java Utililty Methods String to List

ArrayList<Character> myArrayList = new ArrayList<>(str.length());
for (int i = 0; i < str.length(); i++) {
    myArrayList.add(i, str.charAt(i));
return myArrayList;

ArrayList<Character> list = new ArrayList<Character>(string.length());
for (char c : string.toCharArray()) {
    list.add(c);
return list;

HashSet<String> list = null;
if (text == null) {
    return list;
String[] split = text.split(DELIMITER);
if (split == null || split.length == 0) {
    return list;
list = new HashSet<>();
Collections.addAll(list, split);
return list;

String[] items = transaction.trim().split(",");
List<String> list = new ArrayList<String>();
for (String item : items) {
    list.add(item);
return list;

List<String> list = new ArrayList<String>();
int len = val.length();
int inside = 0;
char c;
int begin = 0;
for (int i = 0; i < len; i++) {
    c = val.charAt(i);
    if (c == '"') {
...

List<String> list = new ArrayList<String>();
if (!isEmpty(val) && val.indexOf(separator) > -1) {
    String[] arr = val.split(separator);
    for (String item : arr) {
        if (!isEmpty(item)) {
            list.add(item);
return list;