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Showing content from https://docs.oracle.com/en/java/javase/24/docs/api/java.base/java/util/Collection.html below:

Collection (Java SE 24 & JDK 24)

Type Parameters:

E - the type of elements in this collection

All Superinterfaces:

Iterable<E>

All Known Subinterfaces:

BeanContext, BeanContextServices, BlockingDeque<E>, BlockingQueue<E>, Deque<E>, EventSet, List<E>, NavigableSet<E>, Queue<E>, SequencedCollection<E>, SequencedSet<E>, Set<E>, SortedSet<E>, TransferQueue<E>

All Known Implementing Classes:

AbstractCollection, AbstractList, AbstractQueue, AbstractSequentialList, AbstractSet, ArrayBlockingQueue, ArrayDeque, ArrayList, AttributeList, BeanContextServicesSupport, BeanContextSupport, ConcurrentHashMap.KeySetView, ConcurrentLinkedDeque, ConcurrentLinkedQueue, ConcurrentSkipListSet, CopyOnWriteArrayList, CopyOnWriteArraySet, DelayQueue, EnumSet, HashSet, JobStateReasons, LinkedBlockingDeque, LinkedBlockingQueue, LinkedHashSet, LinkedList, LinkedTransferQueue, PriorityBlockingQueue, PriorityQueue, RoleList, RoleUnresolvedList, Stack, SynchronousQueue, TreeSet, Vector

• Method Summary

  boolean

  Ensures that this collection contains the specified element (optional operation).

  boolean

  Adds all of the elements in the specified collection to this collection (optional operation).

  void

  Removes all of the elements from this collection (optional operation).

  boolean

  Returns true if this collection contains the specified element.

  boolean

  Returns true if this collection contains all of the elements in the specified collection.

  boolean

  Compares the specified object with this collection for equality.

  int

  Returns the hash code value for this collection.

  boolean

  Returns true if this collection contains no elements.

  Returns an iterator over the elements in this collection.

  Returns a possibly parallel Stream with this collection as its source.

  boolean

  Removes a single instance of the specified element from this collection, if it is present (optional operation).

  boolean

  Removes all of this collection's elements that are also contained in the specified collection (optional operation).

  default boolean

  Removes all of the elements of this collection that satisfy the given predicate (optional operation).

  boolean

  Retains only the elements in this collection that are contained in the specified collection (optional operation).

  int

  Returns the number of elements in this collection.

  Creates a

  Spliterator

  over the elements in this collection.

  Returns a sequential Stream with this collection as its source.

  Returns an array containing all of the elements in this collection.

  default <T> T[]

  Returns an array containing all of the elements in this collection, using the provided generator function to allocate the returned array.

  <T> T[]

  Returns an array containing all of the elements in this collection; the runtime type of the returned array is that of the specified array.

• Method Details
  • size
  • isEmpty
  • contains
  • iterator
  • toArray
  • toArray
  • toArray
  • add
  • remove
  • containsAll
  • addAll
  • removeAll
  • removeIf
  • retainAll
  • clear
  • equals
  • hashCode
  • spliterator
  • stream
  • parallelStream

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