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

Set (Java SE 24 & JDK 24)

Type Parameters:

E - the type of elements maintained by this set

All Superinterfaces:

Collection<E>, Iterable<E>

All Known Subinterfaces:

EventSet, NavigableSet<E>, SequencedSet<E>, SortedSet<E>

All Known Implementing Classes:

AbstractSet, ConcurrentHashMap.KeySetView, ConcurrentSkipListSet, CopyOnWriteArraySet, EnumSet, HashSet, JobStateReasons, LinkedHashSet, TreeSet

• Method Summary

  boolean

  Adds the specified element to this set if it is not already present (optional operation).

  boolean

  Adds all of the elements in the specified collection to this set if they're not already present (optional operation).

  void

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

  boolean

  Returns true if this set contains the specified element.

  boolean

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

  boolean

  Compares the specified object with this set for equality.

  int

  Returns the hash code value for this set.

  boolean

  Returns true if this set contains no elements.

  Returns an iterator over the elements in this set.

  Returns an unmodifiable set containing zero elements.

  Returns an unmodifiable set containing one element.

  Returns an unmodifiable set containing an arbitrary number of elements.

  Returns an unmodifiable set containing two elements.

  Returns an unmodifiable set containing three elements.

  of(E e1, E e2, E e3, E e4)

  Returns an unmodifiable set containing four elements.

  of(E e1, E e2, E e3, E e4, E e5)

  Returns an unmodifiable set containing five elements.

  of(E e1, E e2, E e3, E e4, E e5, E e6)

  Returns an unmodifiable set containing six elements.

  of(E e1, E e2, E e3, E e4, E e5, E e6, E e7)

  Returns an unmodifiable set containing seven elements.

  of(E e1, E e2, E e3, E e4, E e5, E e6, E e7, E e8)

  Returns an unmodifiable set containing eight elements.

  of(E e1, E e2, E e3, E e4, E e5, E e6, E e7, E e8, E e9)

  Returns an unmodifiable set containing nine elements.

  of(E e1, E e2, E e3, E e4, E e5, E e6, E e7, E e8, E e9, E e10)

  Returns an unmodifiable set containing ten elements.

  boolean

  Removes the specified element from this set if it is present (optional operation).

  boolean

  Removes from this set all of its elements that are contained in the specified collection (optional operation).

  boolean

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

  int

  Returns the number of elements in this set (its cardinality).

  Creates a Spliterator over the elements in this set.

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

  <T> T[]

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

• Method Details
  • size
  • isEmpty
  • contains
  • iterator
  • toArray
  • toArray
  • add
  • remove
  • containsAll
  • addAll
  • retainAll
  • removeAll
  • clear
  • equals
  • hashCode
  • spliterator
  • of
  • of
  • of
  • of
  • of
  • of
  • of
  • of
  • of
  • of
  • of
  • of
  • copyOf

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