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Préférences
Moteurs de recherche
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JavaTM 2 Platform Std. Ed. v1.5.0
java.util
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Constructor Summary | |
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protected |
AbstractQueue()
Constructor for use by subclasses. |
Method Summary | |
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boolean |
add(E o)
Adds the specified element to this queue. |
boolean |
addAll(Collection<? extends E> c)
Adds all of the elements in the specified collection to this queue. |
void |
clear()
Removes all of the elements from this collection. |
E |
element()
Retrieves, but does not remove, the head of this queue. |
E |
remove()
Retrieves and removes the head of this queue. |
Methods inherited from class java.util.AbstractCollection |
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contains, containsAll, isEmpty, iterator, remove, removeAll, retainAll, size, toArray, toArray, toString |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Methods inherited from interface java.util.Queue |
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offer, peek, poll |
Methods inherited from interface java.util.Collection |
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contains, containsAll, equals, hashCode, isEmpty, iterator, remove, removeAll, retainAll, size, toArray, toArray |
Constructor Detail |
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protected AbstractQueue()
Method Detail |
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public boolean add(E o)
add
in interface Collection<E>
add
in class AbstractCollection<E>
o
- the element
NullPointerException
- if the specified element is null
IllegalStateException
- if element cannot be addedpublic E remove()
NoSuchElementException
- if this queue is empty.public E element()
NoSuchElementException
- if this queue is empty.public void clear()
This implementation repeatedly invokes poll
until it
returns null.
clear
in interface Collection<E>
clear
in class AbstractCollection<E>
public boolean addAll(Collection<? extends E> c)
This implementation iterates over the specified collection, and adds each element returned by the iterator to this collection, in turn. A runtime exception encountered while trying to add an element (including, in particular, a null element) may result in only some of the elements having been successfully added when the associated exception is thrown.
addAll
in interface Collection<E>
addAll
in class AbstractCollection<E>
c
- collection whose elements are to be added to this collection.
NullPointerException
- if the specified collection or
any of its elements are null.
IllegalArgumentException
- if c is this queue.add(Object)