Package java.util

Interface Summary

Interface	Description
Collection<E>	The root interface in the collection hierarchy.
Comparator<T>	A comparison function, which imposes a total ordering on some collection of objects.
Enumeration<E>	An object that implements the Enumeration interface generates a series of elements, one at a time.
Iterator<E>	An iterator over a collection.
List<E>	An ordered collection (also known as a sequence).
ListIterator<E>	An iterator for lists that allows the programmer to traverse the list in either direction, modify the list during iteration, and obtain the iterator's current position in the list.
Map<K,V>	An object that maps keys to values.
Map.Entry<K,V>	A map entry (key-value pair).
Set<E>	A collection that contains no duplicate elements.

Class Summary

Class	Description
Objects	This class consists of static utility methods for operating on objects.
ServiceLoader<S>	A simple service-provider loading facility.
Timer	A facility for threads to schedule tasks for future execution in a background thread.
TimerTask	A task that can be scheduled for one-time or repeated execution by a Timer.

Exception Summary

Exception	Description
NoSuchElementException	Thrown by the nextElement method of an Enumeration to indicate that there are no more elements in the enumeration.

Error Summary

Error	Description
ServiceConfigurationError	Error thrown when something goes wrong while loading a service provider.