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Java Platform 1.2
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Uses of Interface
java.util.Comparator

Packages that use Comparator

java.lang	Provides classes that are fundamental to the design of the Java programming language.
java.text	Provides classes and interfaces for handling text, dates, numbers, and messages in a manner independent of natural languages.
java.util	Provides useful utilities for data structures, date, time, internationalization, events (root interfaces), a simple string tokenizer, a random-number generator, observers, properties and exceptions.

Uses of Comparator in java.lang

Fields in java.lang declared as Comparator

static Comparator

String.CASE_INSENSITIVE_ORDER Returns a case insensitive string Comparator that orders Strings as by compareToIgnoreCase.

Uses of Comparator in java.text

Classes in java.text that implement Comparator

	Collator The Collator class performs locale-sensitive String comparison.
	RuleBasedCollator The RuleBasedCollator class is a concrete subclass of Collator that provides a simple, data-driven, table collator.

Uses of Comparator in java.util

Methods in java.util that return Comparator

static Comparator	Collections.reverseOrder() Returns a Comparator that imposes the reverse of the natural ordering on a collection of Comparable objects.
Comparator	TreeSet.comparator() Returns the comparator used to order this TreeMap, or null if this TreeMap uses its keys natural ordering.
Comparator	SortedSet.comparator() Returns the Comparator associated with this SortedSet, or null if it uses its elements' natural ordering.
Comparator	TreeMap.comparator() Returns the comparator used to order this TreeMap, or null if this TreeMap uses its keys' natural order.
Comparator	SortedMap.comparator() Returns the Comparator associated with this SortedMap, or null if it uses its keys' natural ordering.

Methods in java.util with parameters of type Comparator

static void	Collections.sort(List list, Comparator c) Sorts the specified List according to the order induced by the specified Comparator.
static int	Collections.binarySearch(List list, Object key, Comparator c) Searches the specified List for the specified Object using the binary search algorithm.
static Object	Collections.min(Collection coll, Comparator comp) Returns the minimum element of the given Collection, according to the order induced by the specified Comparator.
static Object	Collections.max(Collection coll, Comparator comp) Returns the maximum element of the given Collection, according to the order induced by the specified Comparator.
static void	Arrays.sort(Object[] a, Comparator c) Sorts the specified array of objects according to the order induced by the specified Comparator.
static int	Arrays.binarySearch(Object[] a, Object key, Comparator c) Searches the specified array for the specified Object using the binary search algorithm.

Constructors in java.util with parameters of type Comparator

TreeSet.TreeSet(Comparator c)
Constructs a new, empty TreeSet, sorted according to the given comparator.

TreeMap.TreeMap(Comparator c)
Constructs a new, empty TreeMap, sorted according to the given comparator.