Uses of Package
java.util

Packages that use java.util

Package	Description
com.google.gwt.animation.client.testing
com.google.gwt.cell.client	Standard Cell subclasses used by the cellview widgets.
com.google.gwt.core.client.testing	Classes used for testing core GWT functionality.
com.google.gwt.core.ext	Classes used to extend the GWT compiler.
com.google.gwt.core.ext.impl
com.google.gwt.core.ext.linker	Classes for writing Linkers.
com.google.gwt.core.ext.linker.impl
com.google.gwt.core.ext.soyc	This package contains interfaces that provide access to "Story of Your Compile" information.
com.google.gwt.core.ext.soyc.coderef
com.google.gwt.core.ext.soyc.impl
com.google.gwt.core.linker	A package containing implementations of the GWT bootstrap linkers.
com.google.gwt.dev
com.google.gwt.dev.cfg
com.google.gwt.dev.codeserver
com.google.gwt.dev.generator
com.google.gwt.dev.javac
com.google.gwt.dev.javac.asm
com.google.gwt.dev.javac.testing.impl
com.google.gwt.dev.javac.typemodel	Type-introspection support classes used by generators.
com.google.gwt.dev.jjs
com.google.gwt.dev.jjs.ast
com.google.gwt.dev.jjs.ast.js
com.google.gwt.dev.jjs.impl
com.google.gwt.dev.jjs.impl.codesplitter
com.google.gwt.dev.jjs.impl.gflow
com.google.gwt.dev.jjs.impl.gflow.cfg
com.google.gwt.dev.js
com.google.gwt.dev.js.ast
com.google.gwt.dev.js.rhino
com.google.gwt.dev.json
com.google.gwt.dev.resource
com.google.gwt.dev.resource.impl
com.google.gwt.dev.shell
com.google.gwt.dev.shell.log
com.google.gwt.dev.shell.remoteui
com.google.gwt.dev.shell.rewrite
com.google.gwt.dev.ui
com.google.gwt.dev.util
com.google.gwt.dev.util.arg
com.google.gwt.dev.util.collect
com.google.gwt.dev.util.log
com.google.gwt.editor.client	A framework for editing bean-like objects.
com.google.gwt.editor.client.adapters	Adapters for the bean editor framework.
com.google.gwt.editor.client.impl
com.google.gwt.editor.client.testing	Classes used for testing the bean editor support.
com.google.gwt.editor.ui.client	User interface components for the bean editor framework.
com.google.gwt.event.shared	Shared infrastructure underlying both browser and non-browser events.
com.google.gwt.i18n.client	Internationalization support for GWT applications.
com.google.gwt.i18n.client.constants	Predefined internationalized constants for currency, date, time, and numbers.
com.google.gwt.i18n.linker
com.google.gwt.i18n.server	This package contains server-side i18n classes and interfaces.
com.google.gwt.i18n.server.impl
com.google.gwt.i18n.server.testing
com.google.gwt.i18n.shared	This package contains i18n classes and interfaces shared between client and server.
com.google.gwt.i18n.shared.impl
com.google.gwt.json.client	Classes for parsing and creating JSON encoded values.
com.google.gwt.logging.client	Log handlers and related classes for java.util.logging support in GWT.
com.google.gwt.logging.impl
com.google.gwt.resources.converter
com.google.gwt.resources.css	Support package for manipulating CSS resources.
com.google.gwt.resources.css.ast
com.google.gwt.resources.ext	This package contains extension hooks for adding new resource types to ClientBundle.
com.google.gwt.resources.gss
com.google.gwt.resources.gss.ast
com.google.gwt.resources.rg
com.google.gwt.soyc
com.google.gwt.soyc.io
com.google.gwt.storage.client
com.google.gwt.text.client	Classes for parsing and rendering numbers, dates, and times.
com.google.gwt.uibinder.attributeparsers	Classes that parse XML attribute values, turning them into valid Java expressions.
com.google.gwt.user.cellview.client	The "cellview" widget set.
com.google.gwt.user.client	Fundamental user-interface classes used in client-side GWT code.
com.google.gwt.user.client.impl
com.google.gwt.user.client.rpc.core.java.util
com.google.gwt.user.client.rpc.impl
com.google.gwt.user.client.ui	Widgets, Panels, and other user-interface classes.
com.google.gwt.user.datepicker.client	The date picker widget and associated types.
com.google.gwt.user.server.rpc	Classes used in server-side implementation of remote procedure calls.
com.google.gwt.user.server.rpc.core.java.util
com.google.gwt.user.server.rpc.impl
com.google.gwt.user.tools	Classes used to create a GWT application skeleton.
com.google.gwt.user.tools.util	Classes to process command-line arguments for GWT command-line tools.
com.google.gwt.util.regexfilter	Classes used to implement filtering by a sequence of regular expressions preceded by + or - signs.
com.google.gwt.util.tools	Utility classes for building GWT command-line applications.
com.google.gwt.validation.client
com.google.gwt.validation.client.constraints
com.google.gwt.validation.client.impl
com.google.gwt.validation.client.impl.metadata
com.google.gwt.validation.client.spi
com.google.gwt.view.client	Classes and interfaces used by the cellview widget set.
java.lang
java.math
java.nio.charset
java.sql
java.util
java.util.concurrent
java.util.function
java.util.logging
java.util.stream
javax.validation.spi

Classes in java.util used by com.google.gwt.animation.client.testing

Class and Description
List Represents a sequence of objects.

Classes in java.util used by com.google.gwt.cell.client

Class and Description
Date Represents a date and time.
List Represents a sequence of objects.
Set Represents a set of unique objects.

Classes in java.util used by com.google.gwt.core.client.testing

Class and Description
List Represents a sequence of objects.

Classes in java.util used by com.google.gwt.core.ext

Class and Description
Collection General-purpose interface for storing collections of objects.
List Represents a sequence of objects.
Map Abstract interface for maps.
Set Represents a set of unique objects.
SortedSet A set known to be in ascending order.

Classes in java.util used by com.google.gwt.core.ext.impl

Class and Description
Map Abstract interface for maps.

Classes in java.util used by com.google.gwt.core.ext.linker

Class and Description
Collection General-purpose interface for storing collections of objects.
Comparator An interface used a basis for implementing custom ordering.
Iterator See the official Java API doc for details.
List Represents a sequence of objects.
Set Represents a set of unique objects.
SortedMap A map with ordering.
SortedSet A set known to be in ascending order.

Classes in java.util used by com.google.gwt.core.ext.linker.impl

Class and Description
Collection General-purpose interface for storing collections of objects.
Comparator An interface used a basis for implementing custom ordering.
List Represents a sequence of objects.
Map Abstract interface for maps.
SortedMap A map with ordering.
SortedSet A set known to be in ascending order.
TreeMap Implements a TreeMap using a red-black tree.

Classes in java.util used by com.google.gwt.core.ext.soyc

Class and Description
Comparator An interface used a basis for implementing custom ordering.
List Represents a sequence of objects.
SortedSet A set known to be in ascending order.

Classes in java.util used by com.google.gwt.core.ext.soyc.coderef

Class and Description
Collection General-purpose interface for storing collections of objects.
List Represents a sequence of objects.
Map Abstract interface for maps.
Set Represents a set of unique objects.

Classes in java.util used by com.google.gwt.core.ext.soyc.impl

Class and Description
Comparator An interface used a basis for implementing custom ordering.
List Represents a sequence of objects.
Map Abstract interface for maps.
SortedSet A set known to be in ascending order.

Classes in java.util used by com.google.gwt.core.linker

Class and Description
Collection General-purpose interface for storing collections of objects.
Map Abstract interface for maps.

Classes in java.util used by com.google.gwt.dev

Class and Description
Collection General-purpose interface for storing collections of objects.
List Represents a sequence of objects.
Map Abstract interface for maps.
Set Represents a set of unique objects.
SortedSet A set known to be in ascending order.

Classes in java.util used by com.google.gwt.dev.cfg

Class and Description
Deque A collection designed for holding elements prior to processing.
Iterator See the official Java API doc for details.
List Represents a sequence of objects.
Map Abstract interface for maps.
Set Represents a set of unique objects.
SortedSet A set known to be in ascending order.

Classes in java.util used by com.google.gwt.dev.codeserver

Class and Description
List Represents a sequence of objects.
Map Abstract interface for maps.
SortedMap A map with ordering.

Classes in java.util used by com.google.gwt.dev.generator

Class and Description
Collection General-purpose interface for storing collections of objects.

Classes in java.util used by com.google.gwt.dev.javac

Class and Description
ArrayList Resizeable array implementation of the List interface.
Collection General-purpose interface for storing collections of objects.
Comparator An interface used a basis for implementing custom ordering.
List Represents a sequence of objects.
Map Abstract interface for maps.
Set Represents a set of unique objects.

Classes in java.util used by com.google.gwt.dev.javac.asm

Class and Description
List Represents a sequence of objects.
Map Abstract interface for maps.
Set Represents a set of unique objects.

Classes in java.util used by com.google.gwt.dev.javac.testing.impl

Class and Description
Set Represents a set of unique objects.

Classes in java.util used by com.google.gwt.dev.javac.typemodel

Class and Description
Map Abstract interface for maps.
Set Represents a set of unique objects.

Classes in java.util used by com.google.gwt.dev.jjs

Class and Description
Collection General-purpose interface for storing collections of objects.
List Represents a sequence of objects.
Set Represents a set of unique objects.
SortedSet A set known to be in ascending order.

Classes in java.util used by com.google.gwt.dev.jjs.ast

Class and Description
Collection General-purpose interface for storing collections of objects.
Comparator An interface used a basis for implementing custom ordering.
EnumSet A Set of Enums.
LinkedHashSet Hash table and linked-list implementation of the Set interface with predictable iteration order.
List Represents a sequence of objects.
Map Abstract interface for maps.
Set Represents a set of unique objects.

Classes in java.util used by com.google.gwt.dev.jjs.ast.js

Class and Description
Collection General-purpose interface for storing collections of objects.
List Represents a sequence of objects.
Set Represents a set of unique objects.

Classes in java.util used by com.google.gwt.dev.jjs.impl

Class and Description
ArrayList Resizeable array implementation of the List interface.
Collection General-purpose interface for storing collections of objects.
Iterator See the official Java API doc for details.
List Represents a sequence of objects.
Map Abstract interface for maps.
Set Represents a set of unique objects.

Classes in java.util used by com.google.gwt.dev.jjs.impl.codesplitter

Class and Description
Collection General-purpose interface for storing collections of objects.
List Represents a sequence of objects.
Set Represents a set of unique objects.

Classes in java.util used by com.google.gwt.dev.jjs.impl.gflow

Class and Description
ArrayList Resizeable array implementation of the List interface.
List Represents a sequence of objects.
Map Abstract interface for maps.

Classes in java.util used by com.google.gwt.dev.jjs.impl.gflow.cfg

Class and Description
ArrayList Resizeable array implementation of the List interface.
List Represents a sequence of objects.
Map Abstract interface for maps.

Classes in java.util used by com.google.gwt.dev.js

Class and Description
Collection General-purpose interface for storing collections of objects.
List Represents a sequence of objects.
Map Abstract interface for maps.
Set Represents a set of unique objects.

Classes in java.util used by com.google.gwt.dev.js.ast

Class and Description
Collection General-purpose interface for storing collections of objects.
Iterator See the official Java API doc for details.
List Represents a sequence of objects.

Classes in java.util used by com.google.gwt.dev.js.rhino

Class and Description
Locale A very simple emulation of Locale for shared-code patterns like String.toUpperCase(Locale.US).

Classes in java.util used by com.google.gwt.dev.json

Class and Description
Iterator See the official Java API doc for details.

Classes in java.util used by com.google.gwt.dev.resource

Class and Description
Set Represents a set of unique objects.

Classes in java.util used by com.google.gwt.dev.resource.impl

Class and Description
Collection General-purpose interface for storing collections of objects.
List Represents a sequence of objects.
Map Abstract interface for maps.
Set Represents a set of unique objects.
SortedSet A set known to be in ascending order.

Classes in java.util used by com.google.gwt.dev.shell

Class and Description
Deque A collection designed for holding elements prior to processing.
List Represents a sequence of objects.
Map Abstract interface for maps.
Set Represents a set of unique objects.

Classes in java.util used by com.google.gwt.dev.shell.log

Class and Description
ArrayList Resizeable array implementation of the List interface.
Date Represents a date and time.
EventListener A tag interface that other "listener" interfaces can extend to indicate their adherence to the observer pattern.

Classes in java.util used by com.google.gwt.dev.shell.remoteui

Class and Description
List Represents a sequence of objects.
Map Abstract interface for maps.

Classes in java.util used by com.google.gwt.dev.shell.rewrite

Class and Description
List Represents a sequence of objects.
Map Abstract interface for maps.
Set Represents a set of unique objects.
SortedSet A set known to be in ascending order.

Classes in java.util used by com.google.gwt.dev.ui

Class and Description
Map Abstract interface for maps.

Classes in java.util used by com.google.gwt.dev.util

Class and Description
Collection General-purpose interface for storing collections of objects.
List Represents a sequence of objects.

Classes in java.util used by com.google.gwt.dev.util.arg

Class and Description
List Represents a sequence of objects.

Classes in java.util used by com.google.gwt.dev.util.collect

Class and Description
AbstractCollection Skeletal implementation of the Collection interface.
AbstractSet Skeletal implementation of the Set interface.
Collection General-purpose interface for storing collections of objects.
Comparator An interface used a basis for implementing custom ordering.
Iterator See the official Java API doc for details.
List Represents a sequence of objects.
Map Abstract interface for maps.
Map.Entry Represents an individual map entry.
Set Represents a set of unique objects.

Classes in java.util used by com.google.gwt.dev.util.log

Class and Description
Comparator An interface used a basis for implementing custom ordering.

Classes in java.util used by com.google.gwt.editor.client

Class and Description
List Represents a sequence of objects.

Classes in java.util used by com.google.gwt.editor.client.adapters

Class and Description
List Represents a sequence of objects.

Classes in java.util used by com.google.gwt.editor.client.impl

Class and Description
Iterator See the official Java API doc for details.
List Represents a sequence of objects.

Classes in java.util used by com.google.gwt.editor.client.testing

Class and Description
List Represents a sequence of objects.

Classes in java.util used by com.google.gwt.editor.ui.client

Class and Description
List Represents a sequence of objects.

Classes in java.util used by com.google.gwt.event.shared

Class and Description
Set Represents a set of unique objects.

Classes in java.util used by com.google.gwt.i18n.client

Class and Description
Collection General-purpose interface for storing collections of objects.
Date Represents a date and time.
HashMap Implementation of Map interface based on a hash table.
Iterator See the official Java API doc for details.
Map Abstract interface for maps.
MissingResourceException See the official Java API doc for details.
Set Represents a set of unique objects.

Classes in java.util used by com.google.gwt.i18n.client.constants

Class and Description
Map Abstract interface for maps.

Classes in java.util used by com.google.gwt.i18n.linker

Class and Description
SortedSet A set known to be in ascending order.

Classes in java.util used by com.google.gwt.i18n.server

Class and Description
List Represents a sequence of objects.
Map Abstract interface for maps.
Set Represents a set of unique objects.

Classes in java.util used by com.google.gwt.i18n.server.impl

Class and Description
List Represents a sequence of objects.

Classes in java.util used by com.google.gwt.i18n.server.testing

Class and Description
List Represents a sequence of objects.
Map Abstract interface for maps.

Classes in java.util used by com.google.gwt.i18n.shared

Class and Description
Date Represents a date and time.
List Represents a sequence of objects.

Classes in java.util used by com.google.gwt.i18n.shared.impl

Class and Description
Date Represents a date and time.

Classes in java.util used by com.google.gwt.json.client

Class and Description
Set Represents a set of unique objects.

Classes in java.util used by com.google.gwt.logging.client

Class and Description
List Represents a sequence of objects.

Classes in java.util used by com.google.gwt.logging.impl

Class and Description
Enumeration An interface to generate a series of elements, one at a time.

Classes in java.util used by com.google.gwt.resources.converter

Class and Description
List Represents a sequence of objects.
Map Abstract interface for maps.
Set Represents a set of unique objects.

Classes in java.util used by com.google.gwt.resources.css

Class and Description
List Represents a sequence of objects.
Map Abstract interface for maps.
Set Represents a set of unique objects.
SortedMap A map with ordering.
SortedSet A set known to be in ascending order.

Classes in java.util used by com.google.gwt.resources.css.ast

Class and Description
List Represents a sequence of objects.
Set Represents a set of unique objects.

Classes in java.util used by com.google.gwt.resources.ext

Class and Description
List Represents a sequence of objects.

Classes in java.util used by com.google.gwt.resources.gss

Class and Description
List Represents a sequence of objects.
Map Abstract interface for maps.
Set Represents a set of unique objects.

Classes in java.util used by com.google.gwt.resources.gss.ast

Class and Description
List Represents a sequence of objects.

Classes in java.util used by com.google.gwt.resources.rg

Class and Description
List Represents a sequence of objects.
Map Abstract interface for maps.

Classes in java.util used by com.google.gwt.soyc

Class and Description
ArrayList Resizeable array implementation of the List interface.
HashMap Implementation of Map interface based on a hash table.
HashSet Implements a set in terms of a hash table.
List Represents a sequence of objects.
Map Abstract interface for maps.
Set Represents a set of unique objects.
TreeSet Implements a set using a TreeMap.

Classes in java.util used by com.google.gwt.soyc.io

Class and Description
List Represents a sequence of objects.

Classes in java.util used by com.google.gwt.storage.client

Class and Description
AbstractMap Skeletal implementation of the Map interface.
Map Abstract interface for maps.
Map.Entry Represents an individual map entry.
Set Represents a set of unique objects.

Classes in java.util used by com.google.gwt.text.client

Class and Description
Date Represents a date and time.

Classes in java.util used by com.google.gwt.uibinder.attributeparsers

Class and Description
Map Abstract interface for maps.
Set Represents a set of unique objects.

Classes in java.util used by com.google.gwt.user.cellview.client

Class and Description
Collection General-purpose interface for storing collections of objects.
Comparator An interface used a basis for implementing custom ordering.
List Represents a sequence of objects.

Classes in java.util used by com.google.gwt.user.client

Class and Description
Collection General-purpose interface for storing collections of objects.
Date Represents a date and time.
EventListener A tag interface that other "listener" interfaces can extend to indicate their adherence to the observer pattern.
List Represents a sequence of objects.
Map Abstract interface for maps.

Classes in java.util used by com.google.gwt.user.client.impl

Class and Description
ArrayList Resizeable array implementation of the List interface.
Iterator See the official Java API doc for details.

Classes in java.util used by com.google.gwt.user.client.rpc.core.java.util

Class and Description
ArrayList Resizeable array implementation of the List interface.
Collection General-purpose interface for storing collections of objects.
Date Represents a date and time.
EnumMap A Map of Enums.
HashMap Implementation of Map interface based on a hash table.
HashSet Implements a set in terms of a hash table.
IdentityHashMap Map using reference equality on keys.
LinkedHashMap Hash table implementation of the Map interface with predictable iteration order.
LinkedHashSet Hash table and linked-list implementation of the Set interface with predictable iteration order.
LinkedList Linked list implementation.
List Represents a sequence of objects.
Map Abstract interface for maps.
Set Represents a set of unique objects.
TreeMap Implements a TreeMap using a red-black tree.
TreeSet Implements a set using a TreeMap.
Vector To keep performance characteristics in line with Java community expectations, Vector is a wrapper around ArrayList.

Classes in java.util used by com.google.gwt.user.client.rpc.impl

Class and Description
List Represents a sequence of objects.
Map Abstract interface for maps.

Classes in java.util used by com.google.gwt.user.client.ui

Class and Description
AbstractCollection Skeletal implementation of the Collection interface.
AbstractList Skeletal implementation of the List interface.
ArrayList Resizeable array implementation of the List interface.
Collection General-purpose interface for storing collections of objects.
Comparator An interface used a basis for implementing custom ordering.
EventListener A tag interface that other "listener" interfaces can extend to indicate their adherence to the observer pattern.
EventObject Available as a superclass of event objects.
Iterator See the official Java API doc for details.
List Represents a sequence of objects.
RandomAccess Indicates that a data structure supports constant-time random access to its contained objects.
Set Represents a set of unique objects.

Classes in java.util used by com.google.gwt.user.datepicker.client

Class and Description
Date Represents a date and time.

Classes in java.util used by com.google.gwt.user.server.rpc

Class and Description
List Represents a sequence of objects.
Set Represents a set of unique objects.

Classes in java.util used by com.google.gwt.user.server.rpc.core.java.util

Class and Description
ArrayList Resizeable array implementation of the List interface.
Collection General-purpose interface for storing collections of objects.
EnumMap A Map of Enums.
HashMap Implementation of Map interface based on a hash table.
HashSet Implements a set in terms of a hash table.
IdentityHashMap Map using reference equality on keys.
LinkedHashMap Hash table implementation of the Map interface with predictable iteration order.
LinkedList Linked list implementation.
List Represents a sequence of objects.
Map Abstract interface for maps.
TreeMap Implements a TreeMap using a red-black tree.
TreeSet Implements a set using a TreeMap.
Vector To keep performance characteristics in line with Java community expectations, Vector is a wrapper around ArrayList.

Classes in java.util used by com.google.gwt.user.server.rpc.impl

Class and Description
Comparator An interface used a basis for implementing custom ordering.
Map Abstract interface for maps.
Set Represents a set of unique objects.

Classes in java.util used by com.google.gwt.user.tools

Class and Description
List Represents a sequence of objects.
Map Abstract interface for maps.

Classes in java.util used by com.google.gwt.user.tools.util

Class and Description
List Represents a sequence of objects.

Classes in java.util used by com.google.gwt.util.regexfilter

Class and Description
List Represents a sequence of objects.

Classes in java.util used by com.google.gwt.util.tools

Class and Description
Map Abstract interface for maps.

Classes in java.util used by com.google.gwt.validation.client

Class and Description
List Represents a sequence of objects.
Locale A very simple emulation of Locale for shared-code patterns like String.toUpperCase(Locale.US).

Classes in java.util used by com.google.gwt.validation.client.constraints

Class and Description
Collection General-purpose interface for storing collections of objects.
Date Represents a date and time.
Map Abstract interface for maps.

Classes in java.util used by com.google.gwt.validation.client.impl

Class and Description
Collection General-purpose interface for storing collections of objects.
Iterator See the official Java API doc for details.
List Represents a sequence of objects.
Map Abstract interface for maps.
Set Represents a set of unique objects.

Classes in java.util used by com.google.gwt.validation.client.impl.metadata

Class and Description
Collection General-purpose interface for storing collections of objects.
List Represents a sequence of objects.
Set Represents a set of unique objects.

Classes in java.util used by com.google.gwt.validation.client.spi

Class and Description
Map Abstract interface for maps.
Set Represents a set of unique objects.

Classes in java.util used by com.google.gwt.view.client

Class and Description
List Represents a sequence of objects.
Map Abstract interface for maps.
Set Represents a set of unique objects.

Classes in java.util used by java.lang

Class and Description
Comparator An interface used a basis for implementing custom ordering.
Iterator See the official Java API doc for details.
Locale A very simple emulation of Locale for shared-code patterns like String.toUpperCase(Locale.US).
Spliterator See the official Java API doc for details.

Classes in java.util used by java.math

Class and Description
Random This class provides methods that generates pseudo-random numbers of different types, such as int, long, double, and float.

Classes in java.util used by java.nio.charset

Class and Description
SortedMap A map with ordering.

Classes in java.util used by java.sql

Class and Description
Date Represents a date and time.

Classes in java.util used by java.util

Class and Description
AbstractCollection Skeletal implementation of the Collection interface.
AbstractList Skeletal implementation of the List interface.
AbstractMap Skeletal implementation of the Map interface.
AbstractQueue Skeletal implementation of the Queue interface.
AbstractSequentialList Skeletal implementation of the List interface.
AbstractSet Skeletal implementation of the Set interface.
ArrayList Resizeable array implementation of the List interface.
BitSet This implementation uses a dense array holding bit groups of size 31 to keep track of when bits are set to true or false.
Collection General-purpose interface for storing collections of objects.
Comparator An interface used a basis for implementing custom ordering.
Deque A collection designed for holding elements prior to processing.
DoubleSummaryStatistics See the official Java API doc for details.
Enumeration An interface to generate a series of elements, one at a time.
EnumMap A Map of Enums.
EnumSet A Set of Enums.
HashMap Implementation of Map interface based on a hash table.
HashSet Implements a set in terms of a hash table.
IntSummaryStatistics See the official Java API doc for details.
Iterator See the official Java API doc for details.
List Represents a sequence of objects.
ListIterator Uses Java 1.5 ListIterator for documentation.
Locale A very simple emulation of Locale for shared-code patterns like String.toUpperCase(Locale.US).
LongSummaryStatistics See the official Java API doc for details.
Map Abstract interface for maps.
Map.Entry Represents an individual map entry.
NavigableMap Sorted map providing additional query operations and views.
NavigableSet A SortedSet with more flexible queries.
Optional See the official Java API doc for details.
OptionalDouble See the official Java API doc for details.
OptionalInt See the official Java API doc for details.
OptionalLong See the official Java API doc for details.
PrimitiveIterator See the official Java API doc for details.
PrimitiveIterator.OfDouble See the official Java API doc for details.
PrimitiveIterator.OfInt See the official Java API doc for details.
PrimitiveIterator.OfLong See the official Java API doc for details.
PriorityQueue An unbounded priority queue based on a priority heap.
Queue A collection designed for holding elements prior to processing.
Random This class provides methods that generates pseudo-random numbers of different types, such as int, long, double, and float.
RandomAccess Indicates that a data structure supports constant-time random access to its contained objects.
Set Represents a set of unique objects.
SortedMap A map with ordering.
SortedSet A set known to be in ascending order.
Spliterator See the official Java API doc for details.
Spliterator.OfDouble See the official Java API doc for details.
Spliterator.OfInt See the official Java API doc for details.
Spliterator.OfLong See the official Java API doc for details.
Spliterator.OfPrimitive See the official Java API doc for details.
StringJoiner See the official Java API doc for details.
Vector To keep performance characteristics in line with Java community expectations, Vector is a wrapper around ArrayList.

Classes in java.util used by java.util.concurrent

Class and Description
AbstractMap Skeletal implementation of the Map interface.
Enumeration An interface to generate a series of elements, one at a time.
Map Abstract interface for maps.
Map.Entry Represents an individual map entry.
Set Represents a set of unique objects.

Classes in java.util used by java.util.function

Class and Description
Comparator An interface used a basis for implementing custom ordering.

Classes in java.util used by java.util.logging

Class and Description
Enumeration An interface to generate a series of elements, one at a time.

Classes in java.util used by java.util.stream

Class and Description
Collection General-purpose interface for storing collections of objects.
Comparator An interface used a basis for implementing custom ordering.
DoubleSummaryStatistics See the official Java API doc for details.
IntSummaryStatistics See the official Java API doc for details.
Iterator See the official Java API doc for details.
List Represents a sequence of objects.
LongSummaryStatistics See the official Java API doc for details.
Map Abstract interface for maps.
Optional See the official Java API doc for details.
OptionalDouble See the official Java API doc for details.
OptionalInt See the official Java API doc for details.
OptionalLong See the official Java API doc for details.
PrimitiveIterator.OfDouble See the official Java API doc for details.
PrimitiveIterator.OfInt See the official Java API doc for details.
PrimitiveIterator.OfLong See the official Java API doc for details.
Set Represents a set of unique objects.
Spliterator See the official Java API doc for details.
Spliterator.OfDouble See the official Java API doc for details.
Spliterator.OfInt See the official Java API doc for details.
Spliterator.OfLong See the official Java API doc for details.

Classes in java.util used by javax.validation.spi

Class and Description
Map Abstract interface for maps.
Set Represents a set of unique objects.