boolean add(E e)
Inserts the specified element into the queue represented by this deque (in other words, at the tail of this deque) if it is possible to do so immediately without violating capacity restrictions, returning true upon success and throwing an IllegalStateException if no space is currently available.
void addFirst(E e)
Inserts the specified element at the front of this deque if it is possible to do so immediately without violating capacity restrictions, throwing an IllegalStateException if no space is currently available.
void addLast(E e)
Inserts the specified element at the end of this deque if it is possible to do so immediately without violating capacity restrictions, throwing an IllegalStateException if no space is currently available.
boolean contains(Object o)
Returns true if this deque contains the specified element.
E element()
Retrieves, but does not remove, the head of the queue represented by this deque (in other words, the first element of this deque).
Iterator<E> iterator()
Returns an iterator over the elements in this deque in proper sequence.
boolean offer(E e)
Inserts the specified element into the queue represented by this deque (in other words, at the tail of this deque) if it is possible to do so immediately without violating capacity restrictions, returning true upon success and false if no space is currently available.
boolean offer(E e, long timeout, TimeUnit unit)
Inserts the specified element into the queue represented by this deque (in other words, at the tail of this deque), waiting up to the specified wait time if necessary for space to become available.
boolean offerFirst(E e)
Inserts the specified element at the front of this deque if it is possible to do so immediately without violating capacity restrictions, returning true upon success and false if no space is currently available.
boolean offerFirst(E e, long timeout, TimeUnit unit)
Inserts the specified element at the front of this deque, waiting up to the specified wait time if necessary for space to become available.
boolean offerLast(E e)
Inserts the specified element at the end of this deque if it is possible to do so immediately without violating capacity restrictions, returning true upon success and false if no space is currently available.
boolean offerLast(E e, long timeout, TimeUnit unit)
Inserts the specified element at the end of this deque, waiting up to the specified wait time if necessary for space to become available.
E peek()
Retrieves, but does not remove, the head of the queue represented by this deque (in other words, the first element of this deque), or returns null if this deque is empty.
E poll()
Retrieves and removes the head of the queue represented by this deque (in other words, the first element of this deque), or returns null if this deque is empty.
E poll(long timeout, TimeUnit unit)
Retrieves and removes the head of the queue represented by this deque (in other words, the first element of this deque), waiting up to the specified wait time if necessary for an element to become available.
E pollFirst(long timeout, TimeUnit unit)
Retrieves and removes the first element of this deque, waiting up to the specified wait time if necessary for an element to become available.
E pollLast(long timeout, TimeUnit unit)
Retrieves and removes the last element of this deque, waiting up to the specified wait time if necessary for an element to become available.
void push(E e)
Pushes an element onto the stack represented by this deque.
void put(E e)
Inserts the specified element into the queue represented by this deque (in other words, at the tail of this deque), waiting if necessary for space to become available.
void putFirst(E e)
Inserts the specified element at the front of this deque, waiting if necessary for space to become available.
void putLast(E e)
Inserts the specified element at the end of this deque, waiting if necessary for space to become available.
E remove()
Retrieves and removes the head of the queue represented by this deque (in other words, the first element of this deque).
boolean remove(Object o)
Removes the first occurrence of the specified element from this deque.
boolean removeFirstOccurrence(Object o)
Removes the first occurrence of the specified element from this deque.
boolean removeLastOccurrence(Object o)
Removes the last occurrence of the specified element from this deque.
int size()
Returns the number of elements in this deque.
E take()
Retrieves and removes the head of the queue represented by this deque (in other words, the first element of this deque), waiting if necessary until an element becomes available.
E takeFirst()
Retrieves and removes the first element of this deque, waiting if necessary until an element becomes available.
E takeLast()
Retrieves and removes the last element of this deque, waiting if necessary until an element becomes available.
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