Type Parameters:
E - the type of elements maintained by this set
All Superinterfaces:
Collection<E>, Iterable<E>, SequencedCollection<E>, SequencedSet<E>, Set<E>
All Known Subinterfaces:
NavigableSet<E>
All Known Implementing Classes:
ConcurrentSkipListSet, TreeSet

  • Method Summary

    default void

    addFirst(E e)

    Throws UnsupportedOperationException.

    default void

    addLast(E e)

    Throws UnsupportedOperationException.

    Returns the comparator used to order the elements in this set, or null if this set uses the natural ordering of its elements.

    first()

    Returns the first (lowest) element currently in this set.

    default E

    getFirst()

    Gets the first element of this collection.

    default E

    getLast()

    Gets the last element of this collection.

    headSet(E toElement)

    Returns a view of the portion of this set whose elements are strictly less than toElement.

    last()

    Returns the last (highest) element currently in this set.

    default E

    Removes and returns the first element of this collection (optional operation).

    default E

    Removes and returns the last element of this collection (optional operation).

    reversed()

    Returns a reverse-ordered view of this collection.

    Creates a Spliterator over the elements in this sorted set.

    subSet(E fromElement, E toElement)

    Returns a view of the portion of this set whose elements range from fromElement, inclusive, to toElement, exclusive.

    tailSet(E fromElement)

    Returns a view of the portion of this set whose elements are greater than or equal to fromElement.

    Methods declared in interface Collection

    parallelStream, removeIf, stream, toArray

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

    default boolean

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

    Returns a sequential Stream with this collection as its source.

    default <T> T[]

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

    Methods declared in interface Iterable

    forEach

    default void

    Performs the given action for each element of the Iterable until all elements have been processed or the action throws an exception.

    Methods declared in interface Set

    add, addAll, clear, contains, containsAll, equals, hashCode, isEmpty, iterator, remove, removeAll, retainAll, size, toArray, toArray

    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.

    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).

    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

    • comparator

    • subSet

    • headSet

    • tailSet

    • first

    • last

    • spliterator

    • addFirst

    • addLast

    • getFirst

    • getLast

    • removeFirst

    • removeLast

    • reversed