Uses of Interface
java.util.Comparator

Packages that use Comparator

Package	Description
java.lang
java.util

Uses of Comparator in java.lang

Fields in java.lang declared as Comparator

Modifier and Type	Field and Description
static Comparator<String>	String.CASE_INSENSITIVE_ORDER A Comparator that orders String objects as by compareToIgnoreCase.

Uses of Comparator in java.util

Methods in java.util that return Comparator

Modifier and Type	Method and Description
Comparator<? super E>	SortedSet.comparator() Returns the comparator used to order the elements in this set, or null if this set uses the natural ordering of its elements.
Comparator<? super K>	SortedMap.comparator() Returns the comparator used to order the keys in this map, or null if this map uses the natural ordering of its keys.
Comparator<? super E>	PriorityQueue.comparator() Returns the comparator used to order the elements in this queue, or null if this queue is sorted according to the natural ordering of its elements.
static <T> Comparator<T>	Collections.reverseOrder() Returns a comparator that imposes the reverse of the natural ordering on a collection of objects that implement the Comparable interface.
static <T> Comparator<T>	Collections.reverseOrder(Comparator<T> cmp) Returns a comparator that imposes the reverse ordering of the specified comparator.

Methods in java.util with parameters of type Comparator

Modifier and Type	Method and Description
static <T> int	Collections.binarySearch(List<? extends T> list, T key, Comparator<? super T> c) Searches the specified list for the specified object using the binary search algorithm.
static <T> int	Arrays.binarySearch(T[] a, int fromIndex, int toIndex, T key, Comparator<? super T> c) Searches a range of the specified array for the specified object using the binary search algorithm.
static <T> int	Arrays.binarySearch(T[] a, T key, Comparator<? super T> c) Searches the specified array for the specified object using the binary search algorithm.
static <T> int	Objects.compare(T a, T b, Comparator<? super T> c) Returns 0 if the arguments are identical and c.compare(a, b) otherwise.
static <T> T	Collections.max(Collection<? extends T> coll, Comparator<? super T> comp) Returns the maximum element of the given collection, according to the order induced by the specified comparator.
static <T> T	Collections.min(Collection<? extends T> coll, Comparator<? super T> comp) Returns the minimum element of the given collection, according to the order induced by the specified comparator.
static <T> Comparator<T>	Collections.reverseOrder(Comparator<T> cmp) Returns a comparator that imposes the reverse ordering of the specified comparator.
static <T> void	Collections.sort(List<T> list, Comparator<? super T> c) Sorts the specified list according to the order induced by the specified comparator.
static <T> void	Arrays.sort(T[] a, Comparator<? super T> c) Sorts the specified array of objects according to the order induced by the specified comparator.
static <T> void	Arrays.sort(T[] a, int fromIndex, int toIndex, Comparator<? super T> c) Sorts the specified range of the specified array of objects according to the order induced by the specified comparator.

Constructors in java.util with parameters of type Comparator

Constructor and Description
PriorityQueue(int initialCapacity, Comparator<? super E> comparator) Creates a PriorityQueue with the specified initial capacity that orders its elements according to the specified comparator.