Java Utililty Methods Collection Subtract

List of utility methods to do Collection Subtract

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Description

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

Method

ArrayListsubtract(Collection l1, Collection l2)
subtract 
ArrayList<T> al = new ArrayList<T>();
al.addAll(l1);
for (T item : l2) {
    al.remove(item);
return al;
Collectionsubtract(final Collection a, final Collection b)
Returns a new Collection containing a - b. 
ArrayList list = new ArrayList(a);
for (Iterator it = b.iterator(); it.hasNext();) {
    list.remove(it.next());
return list;
Collectionsubtract(final Collection a, final Collection b)
subtract 
ArrayList<K> list = new ArrayList<K>(a);
for (Iterator<K> it = b.iterator(); it.hasNext();) {
    list.remove(it.next());
return list;
Listsubtract(final Collection a, final Collection b)
subtract 
ArrayList<T> list = new ArrayList<T>(a);
for (Iterator it = b.iterator(); it.hasNext();) {
    list.remove(it.next());
return list;
Listsubtract(final Collection a, final Collection b)
subtract 
List<T> list = new ArrayList<T>(a);
for (T element : b) {
    list.remove(element);
return list;
CollectionsubtractCollections(Collection collection1, Collection collection2)
Returns all items in collection1 that are not in collection2 
Collection<T> result = new ArrayList<T>(collection1);
result.removeAll(collection2);
return result;