Java Utililty Methods List from Array

if (input == null) {
    return null;
List<String> output = new ArrayList<String>();
for (int i = 0; i < input.length; i++) {
    output.add(input[i]);
return output;
...

List list = Arrays.asList(str);
return list;

if (null == array) {
    return null;
return new ArrayList<T>(Arrays.asList(array));

List<T> list = new ArrayList<T>(); 
if (array != null) {
    for (T element : array) {
        list.add(element); 
return list;

ArrayList<T> list = new ArrayList<T>(array.length);
for (T element : array) {
    list.add(element);
return list;

return isArrayEmpty(array) ? new ArrayList<T>(1) : Arrays.asList(array);

ArrayList<T> list = new ArrayList<>(array.length);
Collections.addAll(list, array);
return list;

List<T> list = new ArrayList<T>();
if (array == null || array.length == 0) {
    return list;
for (T t : array) {
    list.add(t);
return list;
...

if (obj == null)
    return null;
List<T> lists = newList;
for (int i = 0; i < obj.length; i++) {
    lists.add(obj[i]);
return lists;

return Arrays.asList(source);