@Beta public abstract class ForwardingDeque<E> extends ForwardingQueue<E> implements Deque<E>
Warning: The methods of ForwardingDeque
forward
indiscriminately to the methods of the delegate. For example,
overriding ForwardingCollection.add(E)
alone will not change the behavior of ForwardingQueue.offer(E)
which can lead to unexpected behavior. In this case, you should
override offer
as well, either providing your own implementation, or
delegating to the provided standardOffer
method.
The standard
methods are not guaranteed to be thread-safe, even
when all of the methods that they depend on are thread-safe.
Modifier | Constructor and Description |
---|---|
protected |
ForwardingDeque()
Constructor for use by subclasses.
|
Modifier and Type | Method and Description |
---|---|
void |
addFirst(E e) |
void |
addLast(E e) |
protected abstract Deque<E> |
delegate()
Returns the backing delegate instance that methods are forwarded to.
|
Iterator<E> |
descendingIterator() |
E |
getFirst() |
E |
getLast() |
boolean |
offerFirst(E e) |
boolean |
offerLast(E e) |
E |
peekFirst() |
E |
peekLast() |
E |
pollFirst() |
E |
pollLast() |
E |
pop() |
void |
push(E e) |
E |
removeFirst() |
boolean |
removeFirstOccurrence(Object o) |
E |
removeLast() |
boolean |
removeLastOccurrence(Object o) |
element, offer, peek, poll, remove, standardOffer, standardPeek, standardPoll
add, addAll, clear, contains, containsAll, isEmpty, iterator, remove, removeAll, retainAll, size, standardAddAll, standardClear, standardContains, standardContainsAll, standardIsEmpty, standardRemove, standardRemoveAll, standardRetainAll, standardToArray, standardToArray, standardToString, toArray, toArray
toString
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
protected abstract Deque<E> delegate()
ForwardingObject
ForwardingSet.delegate()
. Concrete subclasses override this method to supply
the instance being decorated.delegate
in class ForwardingQueue<E>
public Iterator<E> descendingIterator()
descendingIterator
in interface Deque<E>
public boolean offerFirst(E e)
offerFirst
in interface Deque<E>
public E removeFirst()
removeFirst
in interface Deque<E>
public E removeLast()
removeLast
in interface Deque<E>
public boolean removeFirstOccurrence(Object o)
removeFirstOccurrence
in interface Deque<E>
public boolean removeLastOccurrence(Object o)
removeLastOccurrence
in interface Deque<E>
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