Uses of Package
java.util

Packages that use java.util

java.lang
java.util

Classes in java.util used by java.lang

Iterator
An Iterator is used to sequence over a collection of objects.

Classes in java.util used by java.util

AbstractCollection
This class provides a skeletal implementation of the Collection interface, to minimize the effort required to implement this interface.

AbstractList
This class provides a skeletal implementation of the List interface to minimize the effort required to implement this interface backed by a "random access" data store (such as an array).

AbstractMap
This class provides a skeletal implementation of the Map interface, to minimize the effort required to implement this interface.

AbstractSet
This class provides a skeletal implementation of the Set interface to minimize the effort required to implement this interface.

Collection
Collection is the root of the collection hierarchy.

Dictionary
Dictionary is a abstract class which is the superclass of all classes that associate keys with values, such as Hashtable.

Enumeration
An Enumeration is used to sequence over a collection of objects.

EventListener
EventListener is the superclass of all event listener interfaces.

Hashtable
This class implements a hashtable, which maps keys to values.

IllegalFormatException
Unchecked Exception that is to be thrown out when a format string that contains either an illegal syntax or format specifier is transferred as a parameter.

Iterator
An Iterator is used to sequence over a collection of objects.

List
List is a collection which maintains an ordering for its elements.

ListIterator
An ListIterator is used to sequence over a List of objects.

Locale
A Locale object represents a specific geographical, political, or cultural region.

Map
Map has a set of keys, each key is mapped to a single value.

MissingResourceException
This runtime exception is thrown by ResourceBundle when a resouce bundle cannot be found or a resource is missing from a resource bundle.

NoSuchElementException
This runtime exception is thrown when trying to retrieve an element past the end of an Enumeration, or the first or last element from an empty Vector.

Properties
The Properties class represents a persistent set of properties.

RandomAccess
RandomAccess is implemented by List implementations that support fast (usually constant time) random access.

ResourceBundle

Set
Set is a collection which does not allow duplicate elements.

Vector
The Vector class implements a growable array of objects.