salvo.jesus.util

Class Collections

java.lang.Object

salvo.jesus.util.Collections

public class Collections
extends Object

Constructor Summary

Constructors

Constructor and Description
Collections()

Method Summary

Modifier and Type	Method and Description
static Object	contains(Collection c, Object compareTo, Comparator comparator) Returns true if the specified Collection has an object that matches the argument object compareTo using the given Comparator.
static Set	subset(Collection c, Object compareTo, Comparator comparator) Returns a subset of the specified collection whose elements match a given object using a specified Comparator.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Collections

public Collections()

Method Detail

subset

public static Set subset(Collection c,
                         Object compareTo,
                         Comparator comparator)

Returns a subset of the specified collection whose elements match a given object using a specified Comparator. Only elements in the collection that match the given object compareTo using the specified comparator are returned in the subset.

Parameters:

c - Collection object from which a subset will be taken.

compareTo - Object to which elements of the collection will be compared against.

comparator - Comparator object determining how elements in the collection will be compared to the compareTo object.

Returns:

Collection object that is a subset of the collection specified in the argument.

contains

public static Object contains(Collection c,
                              Object compareTo,
                              Comparator comparator)

Returns true if the specified Collection has an object that matches the argument object compareTo using the given Comparator. This therefore does use obj1.equals( obj2 ) but uses comparator.compare( obj1, obj2 ).

Parameters:

c - Collection object from which a subset will be taken.

compareTo - Object to which elements of the collection will be compared against.

comparator - Comparator object determining how elements in the collection will be compared to the compareTo object.

Returns:

boolean True if the Collection has a matching object