@Beta protected class ForwardingMap.StandardKeySet extends AbstractSet<E>
Map.keySet()
in terms of the following
methods: ForwardingMap.clear()
, ForwardingMap.containsKey(java.lang.Object)
,
ForwardingMap.isEmpty()
, ForwardingMap.remove(java.lang.Object)
, ForwardingMap.size()
, and the Set.iterator()
method of ForwardingMap.entrySet()
. In many cases, you may wish to override ForwardingMap.keySet()
to forward to this implementation or a subclass
thereof.Constructor and Description |
---|
StandardKeySet()
Constructor for use by subclasses.
|
Modifier and Type | Method and Description |
---|---|
void |
clear() |
boolean |
contains(Object o) |
void |
forEach(Consumer<? super K> action) |
boolean |
isEmpty() |
Iterator<K> |
iterator() |
boolean |
remove(Object o) |
boolean |
removeAll(Collection<?> c) |
boolean |
retainAll(Collection<?> c) |
int |
size() |
equals, hashCode
add, addAll, containsAll, toArray, toArray, toString
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
add, addAll, containsAll, spliterator, toArray, toArray
parallelStream, removeIf, stream
public StandardKeySet()
public Iterator<K> iterator()
iterator
in interface Iterable<K>
iterator
in interface Collection<K>
iterator
in interface Set<K>
iterator
in class AbstractCollection<K>
public int size()
size
in interface Collection<K>
size
in interface Set<K>
size
in class AbstractCollection<K>
public boolean isEmpty()
isEmpty
in interface Collection<K>
isEmpty
in interface Set<K>
isEmpty
in class AbstractCollection<K>
public boolean contains(Object o)
contains
in interface Collection<K>
contains
in interface Set<K>
contains
in class AbstractCollection<K>
public boolean remove(Object o)
remove
in interface Collection<K>
remove
in interface Set<K>
remove
in class AbstractCollection<K>
public void clear()
clear
in interface Collection<K>
clear
in interface Set<K>
clear
in class AbstractCollection<K>
public boolean removeAll(Collection<?> c)
removeAll
in interface Collection<E>
removeAll
in interface Set<E>
removeAll
in class AbstractSet<E>
public boolean retainAll(Collection<?> c)
retainAll
in interface Collection<E>
retainAll
in interface Set<E>
retainAll
in class AbstractCollection<E>
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