Uses of Interface
java.util.Collection

Packages that use Collection

Package	Description
java.util

Uses of Collection in java.util

Subinterfaces of Collection in java.util

Modifier and Type	Interface and Description
interface	Deque<E> A linear collection that supports element insertion and removal at both ends.
interface	List<E> An ordered collection (also known as a sequence).
interface	Queue<E> A collection designed for holding elements prior to processing.
interface	Set<E> A collection that contains no duplicate elements.
interface	SortedSet<E> A Set that further provides a total ordering on its elements.

Classes in java.util that implement Collection

Modifier and Type	Class and Description
class	AbstractCollection<E> This class provides a skeletal implementation of the Collection interface, to minimize the effort required to implement this interface.
class	AbstractList<E> This class provides a skeletal implementation of the List interface to minimize the effort required to implement this interface backed by a "random access" data store (such as an array).
class	AbstractQueue<E> This class provides skeletal implementations of some Queue operations.
class	AbstractSequentialList<E> This class provides a skeletal implementation of the List interface to minimize the effort required to implement this interface backed by a "sequential access" data store (such as a linked list).
class	AbstractSet<E> This class provides a skeletal implementation of the Set interface to minimize the effort required to implement this interface.
class	ArrayDeque<E> Resizable-array implementation of the Deque interface.
class	ArrayList<E> Resizable-array implementation of the List interface.
class	HashSet<E> This class implements the Set interface, backed by a hash table (actually a HashMap instance).
class	LinkedList<E> Doubly-linked list implementation of the List and Deque interfaces.
class	PriorityQueue<E> An unbounded priority queue based on a priority heap.
class	Stack<E> The Stack class represents a last-in-first-out (LIFO) stack of objects.
class	Vector<E> The Vector class implements a growable array of objects.

Methods in java.util that return Collection

Modifier and Type	Method and Description
static <E> Collection<E>	Collections.checkedCollection(Collection<E> c, Class<E> type) Returns a dynamically typesafe view of the specified collection.
static <T> Collection<T>	Collections.synchronizedCollection(Collection<T> c) Returns a synchronized (thread-safe) collection backed by the specified collection.
static <T> Collection<T>	Collections.unmodifiableCollection(Collection<? extends T> c) Returns an unmodifiable view of the specified collection.
Collection<V>	SortedMap.values() Returns a Collection view of the values contained in this map.
Collection<V>	Map.values() Returns a Collection view of the values contained in this map.
Collection<V>	Hashtable.values() Returns a Collection view of the values contained in this map.
Collection<V>	HashMap.values() Returns a Collection view of the values contained in this map.
Collection<V>	AbstractMap.values() Returns a Collection view of the values contained in this map.

Methods in java.util with parameters of type Collection

Modifier and Type	Method and Description
boolean	Vector.addAll(Collection<? extends E> c) Appends all of the elements in the specified Collection to the end of this Vector, in the order that they are returned by the specified Collection's Iterator.
boolean	Set.addAll(Collection<? extends E> c) Adds all of the elements in the specified collection to this set if they're not already present (optional operation).
boolean	List.addAll(Collection<? extends E> c) Appends all of the elements in the specified collection to the end of this list, in the order that they are returned by the specified collection's iterator (optional operation).
boolean	LinkedList.addAll(Collection<? extends E> c) Appends all of the elements in the specified collection to the end of this list, in the order that they are returned by the specified collection's iterator.
boolean	Collection.addAll(Collection<? extends E> c) Adds all of the elements in the specified collection to this collection (optional operation).
boolean	ArrayList.addAll(Collection<? extends E> c) Appends all of the elements in the specified collection to the end of this list, in the order that they are returned by the specified collection's Iterator.
boolean	AbstractQueue.addAll(Collection<? extends E> c) Adds all of the elements in the specified collection to this queue.
boolean	AbstractCollection.addAll(Collection<? extends E> c) Adds all of the elements in the specified collection to this collection (optional operation).
static <T> boolean	Collections.addAll(Collection<? super T> c, T... elements) Adds all of the specified elements to the specified collection.
boolean	Vector.addAll(int index, Collection<? extends E> c) Inserts all of the elements in the specified Collection into this Vector at the specified position.
boolean	List.addAll(int index, Collection<? extends E> c) Inserts all of the elements in the specified collection into this list at the specified position (optional operation).
boolean	LinkedList.addAll(int index, Collection<? extends E> c) Inserts all of the elements in the specified collection into this list, starting at the specified position.
boolean	ArrayList.addAll(int index, Collection<? extends E> c) Inserts all of the elements in the specified collection into this list, starting at the specified position.
boolean	AbstractSequentialList.addAll(int index, Collection<? extends E> c) Inserts all of the elements in the specified collection into this list at the specified position (optional operation).
boolean	AbstractList.addAll(int index, Collection<? extends E> c) Inserts all of the elements in the specified collection into this list at the specified position (optional operation).
static <E> Collection<E>	Collections.checkedCollection(Collection<E> c, Class<E> type) Returns a dynamically typesafe view of the specified collection.
boolean	Vector.containsAll(Collection<?> c) Returns true if this Vector contains all of the elements in the specified Collection.
boolean	Set.containsAll(Collection<?> c) Returns true if this set contains all of the elements of the specified collection.
boolean	List.containsAll(Collection<?> c) Returns true if this list contains all of the elements of the specified collection.
boolean	Collection.containsAll(Collection<?> c) Returns true if this collection contains all of the elements in the specified collection.
boolean	AbstractCollection.containsAll(Collection<?> c) Returns true if this collection contains all of the elements in the specified collection.
static boolean	Collections.disjoint(Collection<?> c1, Collection<?> c2) Returns true if the two specified collections have no elements in common.
static boolean	Collections.disjoint(Collection<?> c1, Collection<?> c2) Returns true if the two specified collections have no elements in common.
static <T> Enumeration<T>	Collections.enumeration(Collection<T> c) Returns an enumeration over the specified collection.
static int	Collections.frequency(Collection<?> c, Object o) Returns the number of elements in the specified collection equal to the specified object.
static <T extends Object & Comparable<? super T>> T	Collections.max(Collection<? extends T> coll) Returns the maximum element of the given collection, according to the natural ordering of its elements.
static <T> T	Collections.max(Collection<? extends T> coll, Comparator<? super T> comp) Returns the maximum element of the given collection, according to the order induced by the specified comparator.
static <T extends Object & Comparable<? super T>> T	Collections.min(Collection<? extends T> coll) Returns the minimum element of the given collection, according to the natural ordering of its elements.
static <T> T	Collections.min(Collection<? extends T> coll, Comparator<? super T> comp) Returns the minimum element of the given collection, according to the order induced by the specified comparator.
boolean	Vector.removeAll(Collection<?> c) Removes from this Vector all of its elements that are contained in the specified Collection.
boolean	Set.removeAll(Collection<?> c) Removes from this set all of its elements that are contained in the specified collection (optional operation).
boolean	List.removeAll(Collection<?> c) Removes from this list all of its elements that are contained in the specified collection (optional operation).
boolean	Collection.removeAll(Collection<?> c) Removes all of this collection's elements that are also contained in the specified collection (optional operation).
boolean	ArrayList.removeAll(Collection<?> c) Removes from this list all of its elements that are contained in the specified collection.
boolean	AbstractSet.removeAll(Collection<?> c) Removes from this set all of its elements that are contained in the specified collection (optional operation).
boolean	AbstractCollection.removeAll(Collection<?> c) Removes all of this collection's elements that are also contained in the specified collection (optional operation).
boolean	Vector.retainAll(Collection<?> c) Retains only the elements in this Vector that are contained in the specified Collection.
boolean	Set.retainAll(Collection<?> c) Retains only the elements in this set that are contained in the specified collection (optional operation).
boolean	List.retainAll(Collection<?> c) Retains only the elements in this list that are contained in the specified collection (optional operation).
boolean	Collection.retainAll(Collection<?> c) Retains only the elements in this collection that are contained in the specified collection (optional operation).
boolean	ArrayList.retainAll(Collection<?> c) Retains only the elements in this list that are contained in the specified collection.
boolean	AbstractCollection.retainAll(Collection<?> c) Retains only the elements in this collection that are contained in the specified collection (optional operation).
static <T> Collection<T>	Collections.synchronizedCollection(Collection<T> c) Returns a synchronized (thread-safe) collection backed by the specified collection.
static <T> Collection<T>	Collections.unmodifiableCollection(Collection<? extends T> c) Returns an unmodifiable view of the specified collection.

Constructors in java.util with parameters of type Collection

Constructor and Description
ArrayDeque(Collection<? extends E> c) Constructs a deque containing the elements of the specified collection, in the order they are returned by the collection's iterator.
ArrayList(Collection<? extends E> c) Constructs a list containing the elements of the specified collection, in the order they are returned by the collection's iterator.
HashSet(Collection<? extends E> c) Constructs a new set containing the elements in the specified collection.
LinkedList(Collection<? extends E> c) Constructs a list containing the elements of the specified collection, in the order they are returned by the collection's iterator.
PriorityQueue(Collection<? extends E> c) Creates a PriorityQueue containing the elements in the specified collection.
Vector(Collection<? extends E> c) Constructs a vector containing the elements of the specified collection, in the order they are returned by the collection's iterator.