Java Utililty Methods Collection First

return get(col, 0);

if (coll == null || coll.isEmpty())
    return null;
if (coll instanceof List)
    return ((List<T>) coll).get(0);
Iterator<T> iter = coll.iterator();
while (iter.hasNext()) {
    return iter.next();
return null;

if (isEmpty(collection)) {
    return null;
return collection.iterator().next();

if (collection != null) {
    Iterator<T> iterator = collection.iterator();
    return iterator.hasNext() ? iterator.next() : null;
return null;

if (isEmpty(collection)) {
    return null;
return collection.iterator().next();

if (isEmpty(collection)) {
    return null;
if (collection instanceof List) {
    return ((List<T>) collection).get(0);
return collection.iterator().next();

if (isEmpty(collection)) {
    return null;
return collection.iterator().next();

if (isEmpty(collection)) {
    return null;
return collection.iterator().next();

return l.size() > 0 ? l.iterator().next() : null;

if (isNotEmpty(set)) {
    for (T item : set) {
        if (item != null) {
            return item;
return null;
...