Java Utililty Methods Collection Element Get

List of utility methods to do Collection Element Get

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Description

The list of methods to do Collection Element Get are organized into topic(s).

Method

Objectget(Collection coll, int index)
get 
if (coll instanceof List) {
    return ((List) coll).get(index);
} else {
    int i = 0;
    for (Iterator iter = coll.iterator(); iter.hasNext();) {
        Object object = (Object) iter.next();
        if (i == index) {
            return object;
...
Objectget(Collection p_collection, int p_index)
Returns the element at the specified position in the collection. 
if (p_collection == null) {
    return null;
Iterator it = p_collection.iterator();
for (int i = 0; it.hasNext(); i++) {
    if (i == p_index) {
        return it.next();
return null;
Objectget(Collection arr, int idx)
get 
if (idx < 0)
    return null;
for (Iterator<?> i = arr.iterator(); i.hasNext(); idx--) {
    Object b = i.next();
    if (idx <= 0)
        return b;
return null;
...
Eget(Collection collection, int index)
get 
return (E) collection.toArray()[index];
Tget(Collection p_oCol, T p_oObj)
This method provides a way to obtain an object from a collection, given an equal object (logical equals). 
if (p_oObj == null)
    return null;
if (isEmpty(p_oCol))
    return null;
if (p_oCol instanceof List)
    return get(p_oCol, ((List<T>) p_oCol).indexOf(p_oObj));
T oObj = null;
T oTempObj = null;
...
Tget(Collection v, int i)
get 
Iterator<T> itr = v.iterator();
for (int k = 0; k < i; k++)
    itr.next();
return itr.next();
Tget(final Collection list, final int pos)
get 
int cnt = 0;
for (final Object group : list) {
    if (cnt == pos) {
        return (T) group;
    cnt += 1;
return null;
...
Tget(final Collection collection, final int index)
get 
if (collection != null) {
    int i = 0;
    for (final T object : collection) {
        if (i == index) {
            return object;
        } else {
            i++;
return null;
CollectiongetAddedItems(Collection oldValues, Collection newValues)
Find out what elements are added between the oldValues and newValues 
if (newValues == null) {
    newValues = Collections.emptySet();
Collection<String> deltaInterest = new HashSet<String>(newValues);
if (oldValues == null) {
    oldValues = Collections.emptySet();
deltaInterest.removeAll(oldValues);
...
CollectiongetAdditions(Collection source, Collection target)
get Additions 
List<T> addedElements = new ArrayList<T>();
for (T element : target) {
    if (!source.contains(element)) {
        addedElements.add(element);
return addedElements;