Java Utililty Methods Collection Add

List of utility methods to do Collection Add

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Description

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

Method

voidaddAll(Collection intoCollection, Collection fromCollection)
Adds all the items in "fromCollection" into "intoCollection". 
for (T t : fromCollection) {
    intoCollection.add(t);
voidaddAll(Collection left, Collection right)
Add all from right to left collection 
if (left != null && right != null) {
    left.addAll(right);
CollectionaddAll(Collection t1, Iterable t2)
Utility for adding an iterable to a collection. 
for (T t : t2) {
    t1.add(t);
return t1;
voidaddAll(Collection target, Collection source)
add All 
if (target != null && source != null && source.size() > 0) {
    target.addAll(source);
voidaddAll(Collection target, Iterable source)
add All 
for (T t : source) {
    target.add(t);
voidaddAll(Collection target, S[] source)
Adds all elements from source to target. 
if (source != null) {
    for (int s = 0, n = source.length; s < n; s++) {
        target.add(source[s]);
voidaddAll(final Collection coll, final Object[] array)
Convenience method that adds all members of an array to a collection. 
for (int i = 0; i < array.length; i++) {
    coll.add(array[i]);
booleanaddAll(final Collection newItems, final Collection existingItems)
Adds the given items to the given collection 
if ((existingItems != null) && (newItems != null)) {
    return existingItems.addAll(newItems);
return false;
booleanaddAll(final Collection c, final E... array)
add All 
boolean result = false;
for (final E element : array) {
    result |= c.add(element);
return result;
voidaddAll(final Collection thingsToBeAddedTo, final Collection thingsToAdd)
Adds thingsToAdd to thingsToBeAddedTo. 
if (thingsToBeAddedTo == null) {
    throw new IllegalArgumentException("There's no thingsToBeAddedTo!");
if (!isEmpty(thingsToAdd)) {
    thingsToBeAddedTo.addAll(thingsToAdd);