Java Utililty Methods Array to List

List of utility methods to do Array to List

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Description

The list of methods to do Array to List are organized into topic(s).

Method

ListfromArray(E[] array)
from Array 
if ((array == null) || (array.length == 0)) {
    return new ArrayList<E>();
return new ArrayList<E>(Arrays.asList(array));
MapfromArray(final Object[][] array)
from Array 
final Map<K, V> result = new HashMap<K, V>();
for (int i = 0; i < array.length; ++i) {
    final K key = (K) array[i][0];
    final V value = (V) array[i][1];
    result.put(key, value);
return result;
SetfromArray(Object array[])
Create a set containing the elements of an array 
Set l = set();
for (int i = 0; i < array.length; i++) {
    l.add(array[i]);
return l;
ListfromArray(Object[] array)
from Array 
if ((array == null) || (array.length == 0)) {
    return new ArrayList();
List list = new ArrayList(array.length);
for (int i = 0; i < array.length; i++) {
    list.add(array[i]);
return list;
...
ListfromArray(T array[])
Create a list containing the elements of an array 
List<T> l = new ArrayList<T>(array.length);
for (T o : array) {
    l.add(o);
return l;
ListfromArray(T... array)
from Array 
return array != null ? Arrays.asList(array) : null;
CollectionfromArray(T[] array, Class clazz)
from Array 
try {
    Collection<T> collection = clazz.newInstance();
    for (T o : array) {
        collection.add(o);
    return collection;
} catch (Exception e) {
    return null;
...
ArrayListfromArray(T[] objects)
from Array 
ArrayList<T> arrayList = new ArrayList<T>();
Collections.addAll(arrayList, objects);
return arrayList;
ListnewList(final T... elements)

Returns a List with a initial capacity which equals to the number of elements given in parameter and with those elements already added. 

final List<T> retval = new ArrayList<T>(elements.length);
Collections.addAll(retval, elements);
return retval;
ListnewList(final T... elements)
new List 
final ArrayList<T> list = new ArrayList<>();
for (final T element : elements) {
    list.add(element);
return list;