Package java.util

Interface Summary

Interface	Description
Collection	Interface that represents a collection of objects.
Comparator	Interface for objects that specify an ordering between objects.
Enumeration	This is used to iterate through a sequence of Objects of some kind.
EventListener	Empty interface that is implemented by classes that need to receive events.
Iterator	This class is not Java 1.1/Personal Java compliant!
List	An ordered collection (also known as a list).
ListIterator	An extended version of Iterator to support the extra features of Lists.
Map	An object that maps keys onto values.
Map.Entry	A map entry (key-value pair).
RandomAccess	Marker interface used to inform List implementations that they support fast (usually constant time) random access.
Set	This class is a much simplified version of the J2SE version of Set.
SortedMap	A map which guarantees its key's iteration order.
SortedSet	A set which guarantees its iteration order.

Class Summary

Class	Description
AbstractCollection	A basic implementation of most of the methods in the Collection interface to make it easier to create a collection.
AbstractList	A basic implementation of most of the methods in the List interface to make it easier to create a List based on a random-access data structure.
AbstractMap	An abstract implementation of Map to make it easier to create your own implementations.
AbstractSet	An abstract implementation of Set to make it easier to create your own implementations.
ArrayList	An array-backed implementation of the List interface.
Arrays	This class contains various static utility methods performing operations on arrays, and a method to provide a List "view" of an array to facilitate using arrays with Collection-based APIs.
BitSet	This class can be thought of in two ways.
Calendar	This class is an abstract base class for Calendars, which can be used to convert between Date objects and a set of integer fields which represent YEAR, MONTH, DAY, etc.
Collections	Utility class consisting of static methods that operate on, or return Collections.
Date	This class represents a specific time in milliseconds since the epoch.
Dictionary	A Dictionary maps keys to values; how it does that is implementation-specific.
EventObject	Represents Events fired by Objects.
GregorianCalendar	This class represents the Gregorian calendar, that is used in most countries all over the world.
HashMap	This class provides a hashtable-backed implementation of the Map interface.
HashSet	This class provides a HashMap-backed implementation of the Set interface.
Hashtable	A Hashtable is an implementation of a Map.
LinkedHashMap	This class provides a hashtable-backed implementation of the Map interface, with predictable traversal order.
Locale	You should avoid using this version of Locale, use eve.sys.Locale instead.
Properties	A set of persistent properties, which can be saved or loaded from a stream.
PropertyResourceBundle	This class is a concrete ResourceBundle that gets it resources from a property file.
Random	This class generates pseudorandom numbers.
ResourceBundle	A resource bundle contains locale-specific data.
SimpleTimeZone	This class represents a simple time zone offset and handles daylight savings.
Stack
StringTokenizer	This class splits a string into tokens.
Timer	Timer that can run TimerTasks at a later time.
TimerTask	Task that can be run at a later time if given to a Timer.
TimeZone	This class represents a time zone offset and handles daylight savings.
UUID	This class represents a 128-bit UUID value.
Vector
WeakHashMap	A weak hash map has only weak references to the key.

Exception Summary

Exception	Description
ConcurrentModificationException	Exception that is thrown by the collections classes when it is detected that a modification has been made to a data structure when this is not allowed, such as when a collection is structurally modified while an Iterator is operating over it.
EmptyStackException	This exception is thrown by the Stack class when an attempt is made to pop or otherwise access elements from an empty stack.
MissingResourceException	This exception is thrown when a resource is missing.
NoSuchElementException