Uses of Interface
java.util.Set

Packages that use Set

Package	Description
java.util

Uses of Set in java.util

Subinterfaces of Set in java.util

Modifier and Type	Interface and Description
interface	SortedSet<E> A Set that further provides a total ordering on its elements.

Classes in java.util that implement Set

Modifier and Type	Class and Description
class	AbstractSet<E> This class provides a skeletal implementation of the Set interface to minimize the effort required to implement this interface.
class	HashSet<E> This class implements the Set interface, backed by a hash table (actually a HashMap instance).

Fields in java.util declared as Set

Modifier and Type	Field and Description
static Set	Collections.EMPTY_SET The empty set (immutable).

Methods in java.util that return Set

Modifier and Type	Method and Description
static <E> Set<E>	Collections.checkedSet(Set<E> s, Class<E> type) Returns a dynamically typesafe view of the specified set.
static <T> Set<T>	Collections.emptySet() Returns the empty set (immutable).
Set<Map.Entry<K,V>>	SortedMap.entrySet() Returns a Set view of the mappings contained in this map.
Set<Map.Entry<K,V>>	Map.entrySet() Returns a Set view of the mappings contained in this map.
Set<Map.Entry<K,V>>	Hashtable.entrySet() Returns a Set view of the mappings contained in this map.
Set<Map.Entry<K,V>>	HashMap.entrySet() Returns a Set view of the mappings contained in this map.
abstract Set<Map.Entry<K,V>>	AbstractMap.entrySet()
Set<K>	SortedMap.keySet() Returns a Set view of the keys contained in this map.
Set<K>	Map.keySet() Returns a Set view of the keys contained in this map.
Set<K>	Hashtable.keySet() Returns a Set view of the keys contained in this map.
Set<K>	HashMap.keySet() Returns a Set view of the keys contained in this map.
Set<K>	AbstractMap.keySet() Returns a Set view of the keys contained in this map.
static <E> Set<E>	Collections.newSetFromMap(Map<E,Boolean> map) Returns a set backed by the specified map.
static <T> Set<T>	Collections.singleton(T o) Returns an immutable set containing only the specified object.
static <T> Set<T>	Collections.synchronizedSet(Set<T> s) Returns a synchronized (thread-safe) set backed by the specified set.
static <T> Set<T>	Collections.unmodifiableSet(Set<? extends T> s) Returns an unmodifiable view of the specified set.

Methods in java.util with parameters of type Set

Modifier and Type	Method and Description
static <E> Set<E>	Collections.checkedSet(Set<E> s, Class<E> type) Returns a dynamically typesafe view of the specified set.
static <T> Set<T>	Collections.synchronizedSet(Set<T> s) Returns a synchronized (thread-safe) set backed by the specified set.
static <T> Set<T>	Collections.unmodifiableSet(Set<? extends T> s) Returns an unmodifiable view of the specified set.