JavaTM 2 Platform
Std. Ed. v1.3.1

Uses of Package
java.util

Packages that use java.util
java.applet Provides the classes necessary to create an applet and the classes an applet uses to communicate with its applet context. 
java.awt Contains all of the classes for creating user interfaces and for painting graphics and images. 
java.awt.datatransfer Provides interfaces and classes for transferring data between and within applications. 
java.awt.dnd Drag and Drop is a direct manipulation gesture found in many Graphical User Interface systems that provides a mechanism to transfer information between two entities logically associated with presentation elements in the GUI. 
java.awt.event Provides interfaces and classes for dealing with different types of events fired by AWT components. 
java.awt.font Provides classes and interface relating to fonts. 
java.awt.im Provides classes and interfaces for the input method framework. 
java.awt.im.spi Provides interfaces that enable the development of input methods that can be used with any Java runtime environment. 
java.awt.image Provides classes for creating and modifying images. 
java.awt.image.renderable Provides classes and interfaces for producing rendering-independent images. 
java.beans Contains classes related to Java Beans development. 
java.beans.beancontext Provides classes and interfaces relating to bean context. 
java.io Provides for system input and output through data streams, serialization and the file system. 
java.lang Provides classes that are fundamental to the design of the Java programming language. 
java.math Provides classes for performing arbitrary-precision integer arithmetic (BigInteger) and arbitrary-precision decimal arithmetic (BigDecimal). 
java.net Provides the classes for implementing networking applications. 
java.rmi.activation Provides support for RMI Object Activation. 
java.security Provides the classes and interfaces for the security framework. 
java.security.acl The classes and interfaces in this package have been superseded by classes in the java.security package. 
java.security.cert Provides classes and interfaces for parsing and managing certificates. 
java.sql Provides the API for accessing and processing data in a data source using the JavaTM programming language. 
java.text Provides classes and interfaces for handling text, dates, numbers, and messages in a manner independent of natural languages. 
java.util Contains the collections framework, legacy collection classes, event model, date and time facilities, internationalization, and miscellaneous utility classes (a string tokenizer, a random-number generator, and a bit array). 
java.util.jar Provides classes for reading and writing the JAR (Java ARchive) file format, which is based on the standard ZIP file format with an optional manifest file. 
java.util.zip Provides classes for reading and writing the standard ZIP and GZIP file formats. 
javax.accessibility Defines a contract between user-interface components and an assistive technology that provides access to those components. 
javax.naming Provides the classes and interfaces for accessing naming services. 
javax.naming.directory Extends the javax.naming package to provide functionality for accessing directory services. 
javax.naming.event Provides support for event notification when accessing naming and directory services. 
javax.naming.ldap Provides support for LDAPv3 extended operations and controls. 
javax.naming.spi Provides the means for dynamically plugging in support for accessing naming and directory services through the javax.naming and related packages. 
javax.sound.midi Provides interfaces and classes for I/O, sequencing, and synthesis of MIDI (Musical Instrument Digital Interface) data. 
javax.sound.sampled Provides interfaces and classes for capture, processing, and playback of sampled audio data. 
javax.swing Provides a set of "lightweight" (all-Java language) components that, to the maximum degree possible, work the same on all platforms. 
javax.swing.event Provides for events fired by Swing components. 
javax.swing.plaf.basic Provides user interface objects built according to the Basic look-and-feel. 
javax.swing.plaf.metal Provides user interface objects built according to the ``metal'' look-and-feel. 
javax.swing.plaf.multi The multiplexing look and feel allows users to combine auxiliary look and feels with the default look and feel. 
javax.swing.table Provides classes and interfaces for dealing with javax.swing.JTable. 
javax.swing.text Provides classes and interfaces that deal with editable and noneditable text components. 
javax.swing.text.html Provides the class HTMLEditorKit and supporting classes for creating HTML text editors. 
javax.swing.text.html.parser Provides the default HTML parser, along with support classes. 
javax.swing.tree Provides classes and interfaces for dealing with javax.swing.JTree. 
javax.swing.undo Provides support for undo/redo capabilities in an application such as a text editor. 
org.omg.CORBA Provides the mapping of the OMG CORBA APIs to the JavaTM programming language, including the class ORB, which is implemented so that a programmer can use it as a fully-functional Object Request Broker (ORB). 
 

Classes in java.util used by java.applet
Enumeration
          An object that implements the Enumeration interface generates a series of elements, one at a time.
Locale
          A Locale object represents a specific geographical, political, or cultural region.
 

Classes in java.util used by java.awt
Collection
          The root interface in the collection hierarchy.
EmptyStackException
          Thrown by methods in the Stack class to indicate that the stack is empty.
Enumeration
          An object that implements the Enumeration interface generates a series of elements, one at a time.
EventListener
          A tagging interface that all event listener interfaces must extend.
EventObject
           The root class from which all event state objects shall be derived.
Hashtable
          This class implements a hashtable, which maps keys to values.
Locale
          A Locale object represents a specific geographical, political, or cultural region.
Map
          An object that maps keys to values.
Properties
          The Properties class represents a persistent set of properties.
ResourceBundle
          Resource bundles contain locale-specific objects.
Set
          A collection that contains no duplicate elements.
 

Classes in java.util used by java.awt.datatransfer
Map
          An object that maps keys to values.
 

Classes in java.util used by java.awt.dnd
ArrayList
          Resizable-array implementation of the List interface.
EventListener
          A tagging interface that all event listener interfaces must extend.
EventObject
           The root class from which all event state objects shall be derived.
Iterator
          An iterator over a collection.
List
          An ordered collection (also known as a sequence).
TooManyListenersException
           The TooManyListenersException Exception is used as part of the Java Event model to annotate and implement a unicast special case of a multicast Event Source.
 

Classes in java.util used by java.awt.event
EventListener
          A tagging interface that all event listener interfaces must extend.
EventObject
           The root class from which all event state objects shall be derived.
 

Classes in java.util used by java.awt.font
Map
          An object that maps keys to values.
 

Classes in java.util used by java.awt.im
Locale
          A Locale object represents a specific geographical, political, or cultural region.
Map
          An object that maps keys to values.
 

Classes in java.util used by java.awt.im.spi
Locale
          A Locale object represents a specific geographical, political, or cultural region.
 

Classes in java.util used by java.awt.image
Hashtable
          This class implements a hashtable, which maps keys to values.
Vector
          The Vector class implements a growable array of objects.
 

Classes in java.util used by java.awt.image.renderable
Vector
          The Vector class implements a growable array of objects.
 

Classes in java.util used by java.beans
Enumeration
          An object that implements the Enumeration interface generates a series of elements, one at a time.
EventListener
          A tagging interface that all event listener interfaces must extend.
EventObject
           The root class from which all event state objects shall be derived.
 

Classes in java.util used by java.beans.beancontext
ArrayList
          Resizable-array implementation of the List interface.
Collection
          The root interface in the collection hierarchy.
EventListener
          A tagging interface that all event listener interfaces must extend.
EventObject
           The root class from which all event state objects shall be derived.
HashMap
          Hash table based implementation of the Map interface.
Iterator
          An iterator over a collection.
Locale
          A Locale object represents a specific geographical, political, or cultural region.
TooManyListenersException
           The TooManyListenersException Exception is used as part of the Java Event model to annotate and implement a unicast special case of a multicast Event Source.
 

Classes in java.util used by java.io
Enumeration
          An object that implements the Enumeration interface generates a series of elements, one at a time.
 

Classes in java.util used by java.lang
Comparator
          A comparison function, which imposes a total ordering on some collection of objects.
Enumeration
          An object that implements the Enumeration interface generates a series of elements, one at a time.
Locale
          A Locale object represents a specific geographical, political, or cultural region.
Properties
          The Properties class represents a persistent set of properties.
 

Classes in java.util used by java.math
Random
          An instance of this class is used to generate a stream of pseudorandom numbers.
 

Classes in java.util used by java.net
Enumeration
          An object that implements the Enumeration interface generates a series of elements, one at a time.
 

Classes in java.util used by java.rmi.activation
Properties
          The Properties class represents a persistent set of properties.
 

Classes in java.util used by java.security
Collection
          The root interface in the collection hierarchy.
Date
          The class Date represents a specific instant in time, with millisecond precision.
Dictionary
          The Dictionary class is the abstract parent of any class, such as Hashtable, which maps keys to values.
Enumeration
          An object that implements the Enumeration interface generates a series of elements, one at a time.
Hashtable
          This class implements a hashtable, which maps keys to values.
Map
          An object that maps keys to values.
Properties
          The Properties class represents a persistent set of properties.
Random
          An instance of this class is used to generate a stream of pseudorandom numbers.
Set
          A collection that contains no duplicate elements.
 

Classes in java.util used by java.security.acl
Enumeration
          An object that implements the Enumeration interface generates a series of elements, one at a time.
 

Classes in java.util used by java.security.cert
Collection
          The root interface in the collection hierarchy.
Date
          The class Date represents a specific instant in time, with millisecond precision.
Set
          A collection that contains no duplicate elements.
 

Classes in java.util used by java.sql
Calendar
          Calendar is an abstract base class for converting between a Date object and a set of integer fields such as YEAR, MONTH, DAY, HOUR, and so on.
Date
          The class Date represents a specific instant in time, with millisecond precision.
Enumeration
          An object that implements the Enumeration interface generates a series of elements, one at a time.
Map
          An object that maps keys to values.
Properties
          The Properties class represents a persistent set of properties.
 

Classes in java.util used by java.text
Calendar
          Calendar is an abstract base class for converting between a Date object and a set of integer fields such as YEAR, MONTH, DAY, HOUR, and so on.
Comparator
          A comparison function, which imposes a total ordering on some collection of objects.
Date
          The class Date represents a specific instant in time, with millisecond precision.
Locale
          A Locale object represents a specific geographical, political, or cultural region.
Map
          An object that maps keys to values.
Set
          A collection that contains no duplicate elements.
TimeZone
          TimeZone represents a time zone offset, and also figures out daylight savings.
 

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.
AbstractSequentialList
          This class provides a skeletal implementation of the List interface to minimize the effort required to implement this interface backed by a "sequential access" data store (such as a linked list).
AbstractSet
          This class provides a skeletal implementation of the Set interface to minimize the effort required to implement this interface.
BitSet
          This class implements a vector of bits that grows as needed.
Calendar
          Calendar is an abstract base class for converting between a Date object and a set of integer fields such as YEAR, MONTH, DAY, HOUR, and so on.
Collection
          The root interface in the collection hierarchy.
Comparator
          A comparison function, which imposes a total ordering on some collection of objects.
Date
          The class Date represents a specific instant in time, with millisecond precision.
Dictionary
          The Dictionary class is the abstract parent of any class, such as Hashtable, which maps keys to values.
Enumeration
          An object that implements the Enumeration interface generates a series of elements, one at a time.
Hashtable
          This class implements a hashtable, which maps keys to values.
Iterator
          An iterator over a collection.
List
          An ordered collection (also known as a sequence).
ListIterator
          An iterator for lists that allows the programmer to traverse the list in either direction and modify the list during iteration.
Locale
          A Locale object represents a specific geographical, political, or cultural region.
Map
          An object that maps keys to values.
MissingResourceException
          Signals that a resource is missing.
Observable
          This class represents an observable object, or "data" in the model-view paradigm.
Observer
          A class can implement the Observer interface when it wants to be informed of changes in observable objects.
Properties
          The Properties class represents a persistent set of properties.
Random
          An instance of this class is used to generate a stream of pseudorandom numbers.
ResourceBundle
          Resource bundles contain locale-specific objects.
Set
          A collection that contains no duplicate elements.
SortedMap
          A map that further guarantees that it will be in ascending key order, sorted according to the natural ordering of its keys (see the Comparable interface), or by a comparator provided at sorted map creation time.
SortedSet
          A set that further guarantees that its iterator will traverse the set in ascending element order, sorted according to the natural ordering of its elements (see Comparable), or by a Comparator provided at sorted set creation time.
TimerTask
          A task that can be scheduled for one-time or repeated execution by a Timer.
TimeZone
          TimeZone represents a time zone offset, and also figures out daylight savings.
Vector
          The Vector class implements a growable array of objects.
 

Classes in java.util used by java.util.jar
Collection
          The root interface in the collection hierarchy.
Enumeration
          An object that implements the Enumeration interface generates a series of elements, one at a time.
Map
          An object that maps keys to values.
Set
          A collection that contains no duplicate elements.
 

Classes in java.util used by java.util.zip
Enumeration
          An object that implements the Enumeration interface generates a series of elements, one at a time.
 

Classes in java.util used by javax.accessibility
ListResourceBundle
          ListResourceBundle is a abstract subclass of ResourceBundle that manages resources for a locale in a convenient and easy to use list.
Locale
          A Locale object represents a specific geographical, political, or cultural region.
ResourceBundle
          Resource bundles contain locale-specific objects.
Vector
          The Vector class implements a growable array of objects.
 

Classes in java.util used by javax.naming
Enumeration
          An object that implements the Enumeration interface generates a series of elements, one at a time.
Hashtable
          This class implements a hashtable, which maps keys to values.
Properties
          The Properties class represents a persistent set of properties.
Vector
          The Vector class implements a growable array of objects.
 

Classes in java.util used by javax.naming.directory
Hashtable
          This class implements a hashtable, which maps keys to values.
Vector
          The Vector class implements a growable array of objects.
 

Classes in java.util used by javax.naming.event
EventListener
          A tagging interface that all event listener interfaces must extend.
EventObject
           The root class from which all event state objects shall be derived.
 

Classes in java.util used by javax.naming.ldap
EventListener
          A tagging interface that all event listener interfaces must extend.
EventObject
           The root class from which all event state objects shall be derived.
Hashtable
          This class implements a hashtable, which maps keys to values.
 

Classes in java.util used by javax.naming.spi
Hashtable
          This class implements a hashtable, which maps keys to values.
 

Classes in java.util used by javax.sound.midi
EventListener
          A tagging interface that all event listener interfaces must extend.
Vector
          The Vector class implements a growable array of objects.
 

Classes in java.util used by javax.sound.sampled
EventListener
          A tagging interface that all event listener interfaces must extend.
EventObject
           The root class from which all event state objects shall be derived.
 

Classes in java.util used by javax.swing
Dictionary
          The Dictionary class is the abstract parent of any class, such as Hashtable, which maps keys to values.
Enumeration
          An object that implements the Enumeration interface generates a series of elements, one at a time.
EventListener
          A tagging interface that all event listener interfaces must extend.
EventObject
           The root class from which all event state objects shall be derived.
Hashtable
          This class implements a hashtable, which maps keys to values.
Locale
          A Locale object represents a specific geographical, political, or cultural region.
Map
          An object that maps keys to values.
Vector
          The Vector class implements a growable array of objects.
 

Classes in java.util used by javax.swing.event
EventListener
          A tagging interface that all event listener interfaces must extend.
EventObject
           The root class from which all event state objects shall be derived.
 

Classes in java.util used by javax.swing.plaf.basic
EventListener
          A tagging interface that all event listener interfaces must extend.
Hashtable
          This class implements a hashtable, which maps keys to values.
Vector
          The Vector class implements a growable array of objects.
 

Classes in java.util used by javax.swing.plaf.metal
EventListener
          A tagging interface that all event listener interfaces must extend.
 

Classes in java.util used by javax.swing.plaf.multi
Vector
          The Vector class implements a growable array of objects.
 

Classes in java.util used by javax.swing.table
Enumeration
          An object that implements the Enumeration interface generates a series of elements, one at a time.
EventListener
          A tagging interface that all event listener interfaces must extend.
Locale
          A Locale object represents a specific geographical, political, or cultural region.
Vector
          The Vector class implements a growable array of objects.
 

Classes in java.util used by javax.swing.text
Dictionary
          The Dictionary class is the abstract parent of any class, such as Hashtable, which maps keys to values.
Enumeration
          An object that implements the Enumeration interface generates a series of elements, one at a time.
EventListener
          A tagging interface that all event listener interfaces must extend.
Vector
          The Vector class implements a growable array of objects.
 

Classes in java.util used by javax.swing.text.html
Enumeration
          An object that implements the Enumeration interface generates a series of elements, one at a time.
EventListener
          A tagging interface that all event listener interfaces must extend.
EventObject
           The root class from which all event state objects shall be derived.
Vector
          The Vector class implements a growable array of objects.
 

Classes in java.util used by javax.swing.text.html.parser
BitSet
          This class implements a vector of bits that grows as needed.
Enumeration
          An object that implements the Enumeration interface generates a series of elements, one at a time.
Hashtable
          This class implements a hashtable, which maps keys to values.
Vector
          The Vector class implements a growable array of objects.
 

Classes in java.util used by javax.swing.tree
Enumeration
          An object that implements the Enumeration interface generates a series of elements, one at a time.
EventListener
          A tagging interface that all event listener interfaces must extend.
EventObject
           The root class from which all event state objects shall be derived.
Vector
          The Vector class implements a growable array of objects.
 

Classes in java.util used by javax.swing.undo
EventListener
          A tagging interface that all event listener interfaces must extend.
Hashtable
          This class implements a hashtable, which maps keys to values.
Vector
          The Vector class implements a growable array of objects.
 

Classes in java.util used by org.omg.CORBA
Properties
          The Properties class represents a persistent set of properties.
 


JavaTM 2 Platform
Std. Ed. v1.3.1

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