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Showing content from https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/util/SequencedSet.html below:

SequencedSet (Java SE 21 & JDK 21)

Type Parameters:

E - the type of elements in this sequenced set

All Superinterfaces:

Collection<E>, Iterable<E>, SequencedCollection<E>, Set<E>

All Known Subinterfaces:

NavigableSet<E>, SortedSet<E>

All Known Implementing Classes:

ConcurrentSkipListSet, LinkedHashSet, TreeSet

A collection that is both a

and a

. As such, it can be thought of either as a

that also has a well-defined

, or as a

that also has unique elements.

This interface has the same requirements on the equals and hashCode methods as defined by Set.equals and Set.hashCode. Thus, a Set and a SequencedSet will compare equals if and only if they have equal elements, irrespective of ordering.

SequencedSet defines the reversed() method, which provides a reverse-ordered view of this set. The only difference from the SequencedCollection.reversed method is that the return type of SequencedSet.reversed is SequencedSet.

This class is a member of the Java Collections Framework.

Since:

21

• Method Summary

  Returns a reverse-ordered

  view

  of this collection.

  Methods declared in interface java.util.Setadd, addAll, clear, contains, containsAll, equals, hashCode, isEmpty, iterator, remove, removeAll, retainAll, size, spliterator, toArray, toArray

• Method Details
  • reversed

    Returns a reverse-ordered

    view

    of this collection. The encounter order of elements in the returned view is the inverse of the encounter order of elements in this collection. The reverse ordering affects all order-sensitive operations, including those on the view collections of the returned view. If the collection implementation permits modifications to this view, the modifications "write through" to the underlying collection. Changes to the underlying collection might or might not be visible in this reversed view, depending upon the implementation.

    Specified by:

    reversed in interface SequencedCollection<E>

    Returns:

    a reverse-ordered view of this collection, as a SequencedSet

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