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@ParametersAreNonnullByDefault
Package com.google.common.collect
This package contains generic collection interfaces and implementations, and
other utilities for working with collections.
See:
Description
Interface Summary
BiMap<K,V>
A bimap (or "bidirectional map") is a map that preserves the uniqueness of
its values as well as that of its keys.
ClassToInstanceMap<B>
A map, each entry of which maps a Java
raw type to an instance of that type.
Constraint<E>
A constraint that an element must satisfy in order to be added to a
collection.
Interner<E>
Provides equivalent behavior to String.intern() for other immutable
types.
ListMultimap<K,V>
A Multimap that can hold duplicate key-value pairs and that maintains
the insertion ordering of values for a given key.
MapConstraint<K,V>
A constraint on the keys and values that may be added to a Map or
Multimap.
MapDifference<K,V>
An object representing the differences between two maps.
MapDifference.ValueDifference<V>
A difference between the mappings from two maps with the same key.
Maps.EntryTransformer<K,V1,V2>
A transformation of the value of a key-value pair, using both key and value
as inputs.
Multimap<K,V>
A collection similar to a Map, but which may associate multiple
values with a single key.
Multiset<E>
A collection that supports order-independent equality, like Set, but
may have duplicate elements.
Multiset.Entry<E>
An unmodifiable element-count pair for a multiset.
PeekingIterator<E>
An iterator that supports a one-element lookahead while iterating.
RowSortedTable<R,C,V>
Interface that extends Table and whose rows are sorted.
SetMultimap<K,V>
A Multimap that cannot hold duplicate key-value pairs.
SortedMapDifference<K,V>
An object representing the differences between two sorted maps.
SortedMultiset<E>
A Multiset which maintains the ordering of its elements, according to
either their natural order or an explicit Comparator.
SortedSetMultimap<K,V>
A SetMultimap whose set of values for a given key are kept sorted;
that is, they comprise a SortedSet.
Table<R,C,V>
A collection that associates an ordered pair of keys, called a row key and a
column key, with a single value.
Table.Cell<R,C,V>
Row key / column key / value triplet corresponding to a mapping in a table.
Class Summary
AbstractIterator<T>
This class provides a skeletal implementation of the Iterator
interface, to make this interface easier to implement for certain types of
data sources.
AbstractLinkedIterator<T>
This class provides a skeletal implementation of the Iterator
interface for sequences whose next element can always be derived from the
previous element.
ArrayListMultimap<K,V>
Implementation of Multimap that uses an ArrayList to store
the values for a given key.
ArrayTable<R,C,V>
Fixed-size Table implementation backed by a two-dimensional array.
Collections2
Provides static methods for working with Collection instances.
ComparisonChain
A utility for performing a "lazy" chained comparison statement, which
performs comparisons only until it finds a nonzero result.
ConcurrentHashMultiset<E>
A multiset that supports concurrent modifications and that provides atomic versions of most
Multiset operations (exceptions where noted).
Constraints
Factories and utilities pertaining to the Constraint interface.
ContiguousSet<C extends Comparable>
A sorted set of contiguous values in a given DiscreteDomain.
DiscreteDomain<C extends Comparable>
A descriptor for a discrete Comparable domain such as all
Integers.
DiscreteDomains
Factories for common DiscreteDomain instances.
EnumBiMap<K extends Enum<K>,V extends Enum<V>>
A BiMap backed by two EnumMap instances.
EnumHashBiMap<K extends Enum<K>,V>
A BiMap backed by an EnumMap instance for keys-to-values, and
a HashMap instance for values-to-keys.
EnumMultiset<E extends Enum<E>>
Multiset implementation backed by an EnumMap.
ForwardingCollection<E>
A collection which forwards all its method calls to another collection.
ForwardingConcurrentMap<K,V>
A concurrent map which forwards all its method calls to another concurrent
map.
ForwardingIterator<T>
An iterator which forwards all its method calls to another iterator.
ForwardingList<E>
A list which forwards all its method calls to another list.
ForwardingListIterator<E>
A list iterator which forwards all its method calls to another list
iterator.
ForwardingListMultimap<K,V>
A list multimap which forwards all its method calls to another list multimap.
ForwardingMap<K,V>
A map which forwards all its method calls to another map.
ForwardingMapEntry<K,V>
A map entry which forwards all its method calls to another map entry.
ForwardingMultimap<K,V>
A multimap which forwards all its method calls to another multimap.
ForwardingMultiset<E>
A multiset which forwards all its method calls to another multiset.
ForwardingObject
An abstract base class for implementing the decorator pattern.
ForwardingQueue<E>
A queue which forwards all its method calls to another queue.
ForwardingSet<E>
A set which forwards all its method calls to another set.
ForwardingSetMultimap<K,V>
A set multimap which forwards all its method calls to another set multimap.
ForwardingSortedMap<K,V>
A sorted map which forwards all its method calls to another sorted map.
ForwardingSortedSet<E>
A sorted set which forwards all its method calls to another sorted set.
ForwardingSortedSetMultimap<K,V>
A sorted set multimap which forwards all its method calls to another sorted
set multimap.
ForwardingTable<R,C,V>
A table which forwards all its method calls to another table.
GenericMapMaker<K0,V0>
A class exactly like MapMaker, except restricted in the types of maps it can build.
HashBasedTable<R,C,V>
Implementation of Table using hash tables.
HashBiMap<K,V>
A BiMap backed by two HashMap instances.
HashMultimap<K,V>
Implementation of Multimap using hash tables.
HashMultiset<E>
Multiset implementation backed by a HashMap.
ImmutableBiMap<K,V>
An immutable BiMap with reliable user-specified iteration order.
ImmutableBiMap.Builder<K,V>
A builder for creating immutable bimap instances, especially public
static final bimaps ("constant bimaps").
ImmutableClassToInstanceMap<B>
A class-to-instance map backed by an ImmutableMap.
ImmutableClassToInstanceMap.Builder<B>
A builder for creating immutable class-to-instance maps.
ImmutableCollection<E>
An immutable collection.
ImmutableCollection.Builder<E>
Abstract base class for builders of ImmutableCollection types.
ImmutableList<E>
A high-performance, immutable, random-access List implementation.
ImmutableList.Builder<E>
A builder for creating immutable list instances, especially public
static final lists ("constant lists").
ImmutableListMultimap<K,V>
An immutable ListMultimap with reliable user-specified key and value
iteration order.
ImmutableListMultimap.Builder<K,V>
A builder for creating immutable ListMultimap instances, especially
public static final multimaps ("constant multimaps").
ImmutableMap<K,V>
An immutable, hash-based Map with reliable user-specified iteration
order.
ImmutableMap.Builder<K,V>
A builder for creating immutable map instances, especially public
static final maps ("constant maps").
ImmutableMultimap<K,V>
An immutable Multimap.
ImmutableMultimap.Builder<K,V>
A builder for creating immutable multimap instances, especially
public static final multimaps ("constant multimaps").
ImmutableMultiset<E>
An immutable hash-based multiset.
ImmutableMultiset.Builder<E>
A builder for creating immutable multiset instances, especially public static final multisets ("constant multisets").
ImmutableSet<E>
A high-performance, immutable Set with reliable, user-specified
iteration order.
ImmutableSet.Builder<E>
A builder for creating immutable set instances, especially public
static final sets ("constant sets").
ImmutableSetMultimap<K,V>
An immutable SetMultimap with reliable user-specified key and value
iteration order.
ImmutableSetMultimap.Builder<K,V>
A builder for creating immutable SetMultimap instances, especially
public static final multimaps ("constant multimaps").
ImmutableSortedMap<K,V>
An immutable SortedMap.
ImmutableSortedMap.Builder<K,V>
A builder for creating immutable sorted map instances, especially public static final maps ("constant maps").
ImmutableSortedSet<E>
An immutable SortedSet that stores its elements in a sorted array.
ImmutableSortedSet.Builder<E>
A builder for creating immutable sorted set instances, especially public static final sets ("constant sets"), with a given comparator.
ImmutableTable<R,C,V>
An immutable Table with reliable user-specified iteration order.
ImmutableTable.Builder<R,C,V>
A builder for creating immutable table instances, especially public
static final tables ("constant tables").
Interners
Contains static methods pertaining to instances of Interner.
Iterables
This class contains static utility methods that operate on or return objects
of type Iterable.
Iterators
This class contains static utility methods that operate on or return objects
of type Iterator.
LinkedHashMultimap<K,V>
Implementation of Multimap that does not allow duplicate key-value
entries and that returns collections whose iterators follow the ordering in
which the data was added to the multimap.
LinkedHashMultiset<E>
A Multiset implementation with predictable iteration order.
LinkedListMultimap<K,V>
An implementation of ListMultimap that supports deterministic
iteration order for both keys and values.
Lists
Static utility methods pertaining to List instances.
MapConstraints
Factory and utilities pertaining to the MapConstraint interface.
MapMaker
A builder of ConcurrentMap instances having any combination of the following features:
keys or values automatically wrapped in weak or soft references
least-recently-used eviction when a maximum size is exceeded
time-based expiration of entries, measured since last access or last write
notification of evicted (or otherwise removed) entries
on-demand computation of values for keys not already present
Maps
Static utility methods pertaining to Map instances.
MinMaxPriorityQueue<E>
A double-ended priority queue, which provides constant-time access to both
its least element and its greatest element, as determined by the queue's
specified comparator.
MinMaxPriorityQueue.Builder<B>
The builder class used in creation of min-max priority queues.
Multimaps
Provides static methods acting on or generating a Multimap.
Multisets
Provides static utility methods for creating and working with Multiset instances.
MutableClassToInstanceMap<B>
A mutable class-to-instance map backed by an arbitrary user-provided map.
ObjectArrays
Static utility methods pertaining to object arrays.
Ordering<T>
A comparator with added methods to support common functions.
Queues
Static utility methods pertaining to Queue
instances.
Range<C extends Comparable>
A range, sometimes known as an interval, is a convex
(informally, "contiguous" or "unbroken") portion of a particular domain.
Ranges
Static methods pertaining to Range instances.
Sets
Static utility methods pertaining to Set instances.
Sets.SetView<E>
An unmodifiable view of a set which may be backed by other sets; this view
will change as the backing sets do.
SortedMaps
Deprecated. Use the identical methods in Maps.
Tables
Provides static methods that involve a Table.
TreeBasedTable<R,C,V>
Implementation of Table whose row keys and column keys are ordered
by their natural ordering or by supplied comparators.
TreeMultimap<K,V>
Implementation of Multimap whose keys and values are ordered by
their natural ordering or by supplied comparators.
TreeMultiset<E>
A multiset which maintains the ordering of its elements, according to either
their natural order or an explicit Comparator.
UnmodifiableIterator<E>
An iterator that does not support UnmodifiableIterator.remove().
UnmodifiableListIterator<E>
A list iterator that does not support UnmodifiableIterator.remove(), UnmodifiableListIterator.add(E), or
UnmodifiableListIterator.set(E).
Enum Summary
BoundType
Indicates whether an endpoint of some range is contained in the range itself ("closed") or not
("open").
Exception Summary
AsynchronousComputationException
Deprecated. this class is unused by com.google.common.collect.
ComputationException
Wraps an exception that occurred during a computation.
Package com.google.common.collect Description
This package contains generic collection interfaces and implementations, and
other utilities for working with collections. It is a part of the open-source
Guava libraries.
Collection Types
BiMap
- An extension of
Map that guarantees the uniqueness of
its values as well as that of its keys. This is sometimes called an
"invertible map," since the restriction on values enables it to support
an inverse view --
which is another instance of BiMap.
Multiset
- An extension of
Collection that may contain duplicate
values like a List, yet has order-independent equality
like a Set. One typical use for a multiset is to
represent a histogram.
Multimap
- A new type, which is similar to
Map, but may contain
multiple entries with the same key. Some behaviors of
Multimap are left unspecified and are
provided only by the subtypes mentioned below.
ListMultimap
- An extension of
Multimap which permits
duplicate entries, supports random access of values for a particular key,
and has partially order-dependent equality as defined by
ListMultimap.equals(Object). ListMultimap takes its name from the fact that the collection of values
associated with a given key fulfills the List contract.
SetMultimap
- An extension of
Multimap which has
order-independent equality and does not allow duplicate entries; that is,
while a key may appear twice in a SetMultimap, each must map to a
different value. SetMultimap takes its name from the fact that
the collection of
values associated with a given key fulfills the Set
contract.
SortedSetMultimap
- An extension of
SetMultimap for which
the collection values associated with a given key is a
SortedSet.
Table
- A new type, which is similar to
Map, but which indexes
its values by an ordered pair of keys, a row key and column key.
ClassToInstanceMap
- An extension of
Map that associates a raw type with an
instance of that type.
Collection Implementations
of List
of Set
ImmutableSet
ImmutableSortedSet
ContiguousSet (see Ranges)
of Map
of BiMap
of Multiset
of Multimap
ImmutableMultimap
ImmutableListMultimap
ImmutableSetMultimap
ArrayListMultimap
HashMultimap
TreeMultimap
LinkedHashMultimap
LinkedListMultimap
of Table
of ClassToInstanceMap
Classes of static utility methods
Comparison
Abstract implementations
AbstractIterator
AbstractLinkedIterator
ImmutableCollection
UnmodifiableIterator
UnmodifiableListIterator
Ranges
Other
Interner,
Interners
Constraint,
Constraints
MapConstraint,
MapConstraints
MapDifference,
SortedMapDifference
MinMaxPriorityQueue
PeekingIterator
Forwarding collections
ForwardingCollection
ForwardingConcurrentMap
ForwardingIterator
ForwardingList
ForwardingListIterator
ForwardingListMultimap
ForwardingMap
ForwardingMapEntry
ForwardingMultimap
ForwardingMultiset
ForwardingObject
ForwardingQueue
ForwardingSet
ForwardingSetMultimap
ForwardingSortedMap
com.google.common.collect.ForwardingSortedMultiset
ForwardingSortedSet
ForwardingSortedSetMultimap
ForwardingTable
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