public abstract static class Sets.SetView<E> extends AbstractSet<E>
SetView; typically,
you either use it as a plain Set, or immediately invoke immutableCopy() or
copyInto(S) and forget the SetView itself.| Modifier and Type | Method and Description |
|---|---|
boolean |
add(E e)
Deprecated.
Unsupported operation.
|
boolean |
addAll(Collection<? extends E> newElements)
Deprecated.
Unsupported operation.
|
void |
clear()
Deprecated.
Unsupported operation.
|
<S extends Set<E>> |
copyInto(S set)
Copies the current contents of this set view into an existing set.
|
ImmutableSet<E> |
immutableCopy()
Returns an immutable copy of the current contents of this set view.
|
abstract UnmodifiableIterator<E> |
iterator()
Scope the return type to
UnmodifiableIterator to ensure this is an unmodifiable view. |
boolean |
remove(Object object)
Deprecated.
Unsupported operation.
|
boolean |
removeAll(Collection<?> oldElements)
Deprecated.
Unsupported operation.
|
boolean |
retainAll(Collection<?> elementsToKeep)
Deprecated.
Unsupported operation.
|
equals, hashCodecontains, containsAll, isEmpty, size, toArray, toArray, toStringclone, finalize, getClass, notify, notifyAll, wait, wait, waitcontains, containsAll, isEmpty, size, spliterator, toArray, toArrayparallelStream, removeIf, streampublic ImmutableSet<E> immutableCopy()
Warning: this may have unexpected results if a backing set of this view uses a
nonstandard notion of equivalence, for example if it is a TreeSet using a comparator
that is inconsistent with Object.equals(Object).
@CanIgnoreReturnValue public <S extends Set<E>> S copyInto(S set)
set.addAll(this), assuming that all the sets involved are based on the
same notion of equivalence.set, for convenience@CanIgnoreReturnValue @Deprecated public final boolean add(E e)
add in interface Collection<E>add in interface Set<E>add in class AbstractCollection<E>e - element whose presence in this collection is to be ensuredUnsupportedOperationException - always@CanIgnoreReturnValue @Deprecated public final boolean remove(Object object)
remove in interface Collection<E>remove in interface Set<E>remove in class AbstractCollection<E>object - element to be removed from this collection, if presentUnsupportedOperationException - always@CanIgnoreReturnValue @Deprecated public final boolean addAll(Collection<? extends E> newElements)
addAll in interface Collection<E>addAll in interface Set<E>addAll in class AbstractCollection<E>newElements - collection containing elements to be added to this collectionUnsupportedOperationException - alwaysAbstractCollection.add(Object)@CanIgnoreReturnValue @Deprecated public final boolean removeAll(Collection<?> oldElements)
removeAll in interface Collection<E>removeAll in interface Set<E>removeAll in class AbstractSet<E>oldElements - collection containing elements to be removed from this setUnsupportedOperationException - alwaysAbstractCollection.remove(Object),
AbstractCollection.contains(Object)@CanIgnoreReturnValue @Deprecated public final boolean retainAll(Collection<?> elementsToKeep)
retainAll in interface Collection<E>retainAll in interface Set<E>retainAll in class AbstractCollection<E>elementsToKeep - collection containing elements to be retained in this collectionUnsupportedOperationException - alwaysAbstractCollection.remove(Object),
AbstractCollection.contains(Object)@Deprecated public final void clear()
clear in interface Collection<E>clear in interface Set<E>clear in class AbstractCollection<E>UnsupportedOperationException - alwayspublic abstract UnmodifiableIterator<E> iterator()
UnmodifiableIterator to ensure this is an unmodifiable view.iterator in interface Iterable<E>iterator in interface Collection<E>iterator in interface Set<E>iterator in class AbstractCollection<E>Iterator since 2.0)Copyright © 2010–2020. All rights reserved.