Java(TM) 2 Platform, Standard Edition, v1.2.2 API Specification: Uses of Interface java.util.Comparator - JDK 5 Documentation v1.2.2, Java 2 SDK 英文文档

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Java^TM 2 Platform
Standard Edition

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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	Contains the collections framework, legacy collection classes, event model, date and time facilities, internationalization, and miscellaneous utility classes (a string tokenizer, a random-number generator, and a bit array).

Uses of Comparator in java.lang

Fields in java.lang declared as Comparator

static Comparator String.CASE_INSENSITIVE_ORDER
Returns a Comparator that orders String objects as by compareToIgnoreCase.

Uses of Comparator in java.text

Classes in java.text that implement Comparator

class Collator
The Collator class performs locale-sensitive String comparison.

class 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 objects that implement the Comparable interface.

Comparator TreeSet.comparator()
          Returns the comparator used to order this sorted set, or null if this tree map uses its keys natural ordering.

Comparator SortedSet.comparator()
          Returns the comparator associated with this sorted set, or null if it uses its elements' natural ordering.

Comparator TreeMap.comparator()
          Returns the comparator used to order this map, or null if this map uses its keys' natural order.

Comparator SortedMap.comparator()
          Returns the comparator associated with this sorted map, 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 void Arrays.sort(Object[] a, int fromIndex, int toIndex, Comparator c)
          Sorts the specified range of 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 set, sorted according to the given comparator.

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