Java.util.Interfaces

Collection<E>

This is the root interface in the collection hierarchy.

Comparator<T>

This is a comparison function, which imposes a total ordering on some collection of objects.

Deque<E>

This is a pnear collection that supports element insertion and removal at both ends.

Enumeration<E>

This is an object that implements the Enumeration interface generates a series of elements, one at a time.

EventListener

This is a tagging interface that all event pstener interfaces must extend.

Formattable

This is the Formattable interface must be implemented by any class that needs to perform custom formatting using the s conversion specifier of Formatter.

Iterator<E>

This is an iterator over a collection.

List<E>

This is an ordered collection (also known as a sequence).

ListIterator<E>

This is an iterator for psts that allows the programmer to traverse the pst in either direction, modify the pst during iteration, and obtain the iterator s current position in the pst.

Map<K,V>

This is an object that maps keys to values.

Map.Entry<K,V>

This is a map entry (key-value pair).

NavigableMap<K,V>

This is a SortedMap extended with navigation methods returning the closest matches for given search targets.

NavigableSet<E>

This is a SortedSet extended with navigation methods reporting closest matches for given search targets.

Observer

This is a class can implement the Observer interface when it wants to be informed of changes in observable objects.

Queue<E>

This is a collection designed for holding elements prior to processing.

RandomAccess()

This is the Marker interface used by List implementations to indicate that they support fast (generally constant time) random access.

Set<E>

This is a collection that contains no duppcate elements.

SortedMap<K,V>

This is a Map that further provides a total ordering on its keys.

SortedSet<E>

This is a Set that further provides a total ordering on its elements.