Java Utililty Methods List to Long Number Array

long[] a = new long[list.size()];
int i = 0;
for (Number n : list) {
    a[i++] = n.longValue();
return a;

long[] array = new long[list.size()];
for (int i = 0; i < list.size(); i++) {
    array[i] = list.get(i);
return array;

if (null == idList || idList.isEmpty()) {
    return new long[0];
long[] result = new long[idList.size()];
for (int i = 0; i < idList.size(); i++) {
    result[i] = Long.parseLong(idList.get(i));
return result;
...

long[] array = new long[list.size()];
Iterator<Integer> ints = list.iterator();
int idx = 0;
while (ints.hasNext()) {
    Integer value = ints.next();
    array[idx++] = value.intValue();
return array;
...

long[] array = new long[list.size()];
for (int i = 0; i < list.size(); i++) {
    array[i] = list.get(i);
return array;

long[] res = new long[list.size()];
int i = 0;
for (Iterator<Long> iterator = list.iterator(); iterator.hasNext();) {
    res[i++] = iterator.next();
return res;

if (isNullOrEmpty(list)) {
    return null;
long[] longs = new long[list.size()];
for (int i = 0; i < longs.length; i++) {
    longs[i] = list.get(i);
return longs;
...

long[] result;
int i;
result = new long[list.size()];
for (i = 0; i < list.size(); i++)
    result[i] = list.get(i);
return result;

long[] ls = new long[values.size()];
for (int i = 0; i < ls.length; i++) {
    ls[i] = Long.parseLong(values.get(i));
return ls;

if (isEmpty(members)) {
    return null;
List<Long> result = new ArrayList<Long>();
Iterator<String> iterator = members.iterator();
while (iterator.hasNext()) {
    String str = iterator.next();
    if (str == null) {
...