Uses of Interface
java.util.Comparator

Packages that use Comparator

Package	Description
java.lang
java.lang.reflect
java.text
java.util
java.util.concurrent	Utility classes commonly useful in concurrent programming.
libcore.util
org.apache.commons.codec	A small set of interfaces used by the various implementations in the sub-packages.
org.apache.harmony.security.x501
org.apache.http.cookie	The API for client-side state management via cookies, commonly referred to as HttpCookie.

Uses of Comparator in java.lang

Fields in java.lang declared as Comparator

Modifier and Type	Field	Description
static Comparator<String>	String.CASE_INSENSITIVE_ORDER	A comparator ignoring the case of the characters.

Uses of Comparator in java.lang.reflect

Fields in java.lang.reflect declared as Comparator

Modifier and Type	Field	Description
static Comparator<Field>	Field.ORDER_BY_NAME_AND_DECLARING_CLASS	Orders fields by their name and declaring class.
static Comparator<Method>	Method.ORDER_BY_SIGNATURE	Orders methods by their name, parameters and return type.

Uses of Comparator in java.text

Classes in java.text that implement Comparator

Modifier and Type	Class	Description
class	Collator	Performs locale-sensitive string comparison.
class	RuleBasedCollator	A concrete implementation class for Collation.

Uses of Comparator in java.util

Methods in java.util that return Comparator

Modifier and Type	Method	Description
Comparator<? super E>	PriorityQueue.comparator()	Gets the comparator of the priority queue.
Comparator<? super K>	SortedMap.comparator()	Returns the comparator used to compare keys in this sorted map, or null if the natural ordering is in use.
Comparator<? super E>	SortedSet.comparator()	Returns the comparator used to compare elements in this SortedSet.
Comparator<? super K>	TreeMap.comparator()
Comparator<? super E>	TreeSet.comparator()	Returns the comparator used to compare elements in this TreeSet.
static <T> Comparator<T>	Collections.reverseOrder()	A comparator which reverses the natural order of the elements.
static <T> Comparator<T>	Collections.reverseOrder(Comparator<T> c)	Returns a Comparator that reverses the order of the Comparator passed.

Methods in java.util with parameters of type Comparator

Modifier and Type	Method	Description
static <T> int	Arrays.binarySearch(T[] array, int startIndex, int endIndex, T value, Comparator<? super T> comparator)	Performs a binary search for value in the ascending sorted array array, in the range specified by fromIndex (inclusive) and toIndex (exclusive), using comparator to compare elements.
static <T> int	Arrays.binarySearch(T[] array, T value, Comparator<? super T> comparator)	Performs a binary search for value in the ascending sorted array array, using comparator to compare elements.
static <T> int	Collections.binarySearch(List<? extends T> list, T object, Comparator<? super T> comparator)	Performs a binary search for the specified element in the specified sorted list using the specified comparator.
static <T> int	Objects.compare(T a, T b, Comparator<? super T> c)	Returns 0 if a == b, or c.compare(a, b) otherwise.
static <T> T	Collections.max(Collection<? extends T> collection, Comparator<? super T> comparator)	Searches the specified collection for the maximum element using the specified comparator.
static <T> T	Collections.min(Collection<? extends T> collection, Comparator<? super T> comparator)	Searches the specified collection for the minimum element using the specified comparator.
static <T> Comparator<T>	Collections.reverseOrder(Comparator<T> c)	Returns a Comparator that reverses the order of the Comparator passed.
static <T> void	Arrays.sort(T[] array, int start, int end, Comparator<? super T> comparator)	Sorts the specified range in the array using the specified Comparator.
static <T> void	Arrays.sort(T[] array, Comparator<? super T> comparator)	Sorts the specified array using the specified Comparator.
static <T> void	Collections.sort(List<T> list, Comparator<? super T> comparator)	Sorts the given list using the given comparator.

Constructors in java.util with parameters of type Comparator

Constructor	Description
PriorityQueue(int initialCapacity, Comparator<? super E> comparator)	Constructs a priority queue with the specified capacity and comparator.
TreeMap(Comparator<? super K> comparator)	Create a tree map ordered by comparator.
TreeSet(Comparator<? super E> comparator)	Constructs a new empty instance of TreeSet which uses the specified comparator.

Uses of Comparator in java.util.concurrent

Methods in java.util.concurrent that return Comparator

Modifier and Type	Method	Description
Comparator<? super K>	ConcurrentSkipListMap.comparator()
Comparator<? super E>	ConcurrentSkipListSet.comparator()
Comparator<? super E>	PriorityBlockingQueue.comparator()	Returns the comparator used to order the elements in this queue, or null if this queue uses the natural ordering of its elements.

Constructors in java.util.concurrent with parameters of type Comparator

Constructor	Description
ConcurrentSkipListMap(Comparator<? super K> comparator)	Constructs a new, empty map, sorted according to the specified comparator.
ConcurrentSkipListSet(Comparator<? super E> comparator)	Constructs a new, empty set that orders its elements according to the specified comparator.
PriorityBlockingQueue(int initialCapacity, Comparator<? super E> comparator)	Creates a PriorityBlockingQueue with the specified initial capacity that orders its elements according to the specified comparator.

Uses of Comparator in libcore.util

Methods in libcore.util with parameters of type Comparator

Modifier and Type	Method	Description
static <T> void	CollectionUtils.removeDuplicates(List<T> list, Comparator<? super T> comparator)	Sorts and removes duplicate elements from list.

Uses of Comparator in org.apache.commons.codec

Classes in org.apache.commons.codec that implement Comparator

Modifier and Type	Class	Description
class	StringEncoderComparator	Strings are comparable, and this comparator allows you to configure it with an instance of a class which implements StringEncoder.

Uses of Comparator in org.apache.harmony.security.x501

Classes in org.apache.harmony.security.x501 that implement Comparator

Modifier and Type	Class	Description
class	AttributeTypeAndValueComparator	AttributeTypeAndValue comparator

Uses of Comparator in org.apache.http.cookie

Classes in org.apache.http.cookie that implement Comparator

Modifier and Type	Class	Description
class	CookieIdentityComparator	This cookie comparator can be used to compare identity of cookies.
class	CookiePathComparator	This cookie comparator ensures that multiple cookies satisfying a common criteria are ordered in the Cookie header such that those with more specific Path attributes precede those with less specific.