Advanced   Java   Services Die Hierarchie der Queue-Klassen Back Next Up Home


Die Queueklassen

Collection-Queue-Hierarchie.jpg


Die Methoden von Collection
Modifier and TypeMethod and Description
boolean add(E e)
Ensures that this collection contains the specified element (optional operation).
boolean addAll(Collection<? extends E> c)
Adds all of the elements in the specified collection to this collection (optional operation).
void clear()
Removes all of the elements from this collection (optional operation).
boolean contains(Object o)
Returns true if this collection contains the specified element.
boolean containsAll(Collection<?> c)
Returns true if this collection contains all of the elements in the specified collection.
boolean equals(Object o)
Compares the specified object with this collection for equality.
int hashCode()
Returns the hash code value for this collection.
boolean isEmpty()
Returns true if this collection contains no elements.
Iterator<E> iterator()
Returns an iterator over the elements in this collection.
boolean remove(Object o)
Removes a single instance of the specified element from this collection, if it is present (optional operation).
boolean removeAll(Collection<?> c)
Removes all of this collection's elements that are also contained in the specified collection (optional operation).
boolean retainAll(Collection<?> c)
Retains only the elements in this collection that are contained in the specified collection (optional operation).
int size()
Returns the number of elements in this collection.
Object[] toArray()
Returns an array containing all of the elements in this collection.
<T> T[] toArray(T[] a)
Returns an array containing all of the elements in this collection; the runtime type of the returned array is that of the specified array.

Valid XHTML 1.0 Strict top Back Next Up Home