Package java.util

Interface Summary

Interface	Description
Collection<E>	General-purpose interface for storing collections of objects.
Comparator<T>	An interface used a basis for implementing custom ordering.
Enumeration<E>	An interface to generate a series of elements, one at a time.
EventListener	A tag interface that other "listener" interfaces can extend to indicate their adherence to the observer pattern.
Iterator<E>	See the official Java API doc for details.
List<E>	Represents a sequence of objects.
ListIterator<E>	Uses Java 1.5 ListIterator for documentation.
Map<K,V>	Abstract interface for maps.
Map.Entry<K,V>	Represents an individual map entry.
Queue<E>	A collection designed for holding elements prior to processing.
RandomAccess	Indicates that a data structure supports constant-time random access to its contained objects.
Set<E>	Represents a set of unique objects.
SortedMap<K,V>	A map with ordering.
SortedSet<E>	A set known to be in ascending order.

Class Summary

Class	Description
AbstractCollection	Skeletal implementation of the Collection interface.
AbstractCollection<E>	Skeletal implementation of the Collection interface.
AbstractHashMap	Implementation of Map interface based on a hash table.
AbstractList<E>	Skeletal implementation of the List interface.
AbstractList	Skeletal implementation of the List interface.
AbstractMap<K,V>	Skeletal implementation of the Map interface.
AbstractMap	Skeletal implementation of the Map interface.
AbstractMapEntry	Basic Map.Entry implementation that implements hashCode, equals, and toString.
AbstractQueue<E>	Skeletal implementation of the Queue interface.
AbstractQueue	Skeletal implementation of the Queue interface.
AbstractSequentialList	Skeletal implementation of the List interface.
AbstractSequentialList<E>	Skeletal implementation of the List interface.
AbstractSet<E>	Skeletal implementation of the Set interface.
AbstractSet	Skeletal implementation of the Set interface.
ArrayList	Resizeable array implementation of the List interface.
ArrayList<E>	Resizeable array implementation of the List interface.
Arrays	Utility methods related to native arrays.
Arrays	Utility methods related to native arrays.
Collection	General-purpose interface for storing collections of objects.
Collections	Utility methods that operate on collections.
Collections	Utility methods that operate on collections.
Comparator	An interface used a basis for implementing custom ordering.
Comparators
ConcurrentModificationException	See the official Java API doc for details.
Date	Represents a date and time.
Date	Represents a date and time.
EmptyStackException	See the official Java API doc for details.
Enumeration	An interface to generate a series of elements, one at a time.
EnumMap	A Map of Enums.
EnumMap<K extends Enum<K>,V>	A Map of Enums.
EnumSet<E extends Enum<E>>	A Set of Enums.
EnumSet	A Set of Enums.
EventListener	A tag interface that other "listener" interfaces can extend to indicate their adherence to the observer pattern.
EventObject	Available as a superclass of event objects.
EventObject	Available as a superclass of event objects.
HashMap<K,V>	Implementation of Map interface based on a hash table.
HashMap	Implementation of Map interface based on a hash table.
HashSet<E>	Implements a set in terms of a hash table.
HashSet	Implements a set in terms of a hash table.
IdentityHashMap<K,V>	Map using reference equality on keys.
IdentityHashMap	Map using reference equality on keys.
Iterator	See the official Java API doc for details.
LinkedHashMap<K,V>	Hash table implementation of the Map interface with predictable iteration order.
LinkedHashMap	Hash table implementation of the Map interface with predictable iteration order.
LinkedHashSet	Hash table and linked-list implementation of the Set interface with predictable iteration order.
LinkedHashSet<E>	Hash table and linked-list implementation of the Set interface with predictable iteration order.
LinkedList<E>	Linked list implementation.
LinkedList	Linked list implementation.
List	Represents a sequence of objects.
ListIterator	Uses Java 1.5 ListIterator for documentation.
Map	Abstract interface for maps.
MapEntryImpl	A Map.Entry shared by several Map implementations.
MissingResourceException	See the official Java API doc for details.
NoSuchElementException	See the official Java API doc for details.
Objects	See the official Java API doc for details.
Objects	See the official Java API doc for details.
PriorityQueue	An unbounded priority queue based on a priority heap.
PriorityQueue<E>	An unbounded priority queue based on a priority heap.
Queue	A collection designed for holding elements prior to processing.
Random	This class provides methods that generates pseudo-random numbers of different types, such as int, long, double, and float.
Random	This class provides methods that generates pseudo-random numbers of different types, such as int, long, double, and float.
RandomAccess	Indicates that a data structure supports constant-time random access to its contained objects.
Set	Represents a set of unique objects.
SortedMap	A map with ordering.
SortedSet	A set known to be in ascending order.
Stack	Maintains a last-in, first-out collection of objects.
Stack<E>	Maintains a last-in, first-out collection of objects.
TooManyListenersException	Thrown when the subject of an observer cannot support additional observers.
TreeMap	Implements a TreeMap using a red-black tree.
TreeMap<K,V>	Implements a TreeMap using a red-black tree.
TreeSet<E>	Implements a set using a TreeMap.
TreeSet	Implements a set using a TreeMap.
Utility
Vector<E>	To keep performance characteristics in line with Java community expectations, Vector is a wrapper around ArrayList.
Vector	To keep performance characteristics in line with Java community expectations, Vector is a wrapper around ArrayList.

Exception Summary

Exception	Description
ConcurrentModificationException	See the official Java API doc for details.
EmptyStackException	See the official Java API doc for details.
MissingResourceException	See the official Java API doc for details.
NoSuchElementException	See the official Java API doc for details.
TooManyListenersException	Thrown when the subject of an observer cannot support additional observers.