Java Utililty Methods List from Array

if (c instanceof List) {
    return (List<T>) c;
} else {
    ArrayList<T> copy = new ArrayList<T>();
    copy.addAll(c);
    return copy;

return new ArrayList<T>(coll);

return new ArrayList<T>(collection);

List<Double> list = new ArrayList<Double>(array.length);
for (int i = 0; i < array.length; i++)
    list.add(array[i]);
return list;

List<E> list = new ArrayList<E>(elements.length);
for (E element : elements) {
    list.add(element);
return list;

if (pEntities != null) {
    List<E> entities = new ArrayList<>();
    for (E entity : pEntities) {
        entities.add(entity);
    return entities;
return Collections.emptyList();
...

Given an array of a particular type, it will return it as a List of the same type.

List<E> list = new ArrayList<E>(array.length);
for (int i = 0; i < array.length; i++) {
    list.add(array[i]);
return list;

final ArrayList<Character> list = new ArrayList<Character>(array.length);
for (final char c : array) {
    list.add(Character.valueOf(c));
return list;

List<T> result;
if (collection instanceof List) {
    result = (List<T>) collection;
} else {
    result = newList(collection);
return result;

if (c instanceof List) {
    return (List<T>) c;
return new ArrayList<>(c);