Java Utililty Methods List Copy

if (list == null)
    return Collections.emptyList();
List<String> result = new ArrayList<String>(list.size());
result.addAll(list);
return Collections.unmodifiableList(result);

return new ArrayList<T>(list);

if (list == null || list.size() == 0) {
    return Collections.emptyList();
for (int i = list.size() - 1; i >= 0; i--) {
    assert list.get(i) != null;
return Collections.unmodifiableList(new ArrayList<>(list));

Iterator<T> it = list.iterator();
LinkedList<T> newList = new LinkedList<T>();
while (it.hasNext()) {
    newList.add(it.next());
return newList;

slave.clear();
slave.addAll(slave);
return slave;

List<T> copy = null;
if (original != null) {
    copy = new ArrayList<T>();
    if (!original.isEmpty()) {
        copy.addAll(original);
return copy;
...

if (!(object instanceof List)) {
    return new ArrayList<>();
List<?> list = (List<?>) object;
List<String> temp = new ArrayList<>();
for (Object ob : list) {
    if (ob instanceof String) {
        temp.add((String) ob);
...

List<T> newlist = new ArrayList<T>();
for (int i = 0; i < list.size(); i++) {
    if (Arrays.asList(indexes).contains(i)) {
        newlist.add(list.get(i));
return newlist;

slave.clear();
for (Object dto : master) {
    slave.add(dto);
return slave;

if (original == null) {
    return null;
return new ArrayList<>(original);