net.rim.device.api.util
Class InvertedOrderComparator

java.lang.Object
  net.rim.device.api.util.InvertedOrderComparator

All Implemented Interfaces:

Comparator

public final class InvertedOrderComparator
extends Object
implements Comparator

Comparator to do inverted total orderings on collections of objects.

Build this comparator with another comparator that does, for example, an ascending order of data. You can then use this class to impose a descending order on the same data.

Constructor Summary

InvertedOrderComparator(Comparator comparator)
Creates a new InvertedOrderComparator instance.

Method Summary
int	compare(Object o1, Object o2) Compares two arguments for order.

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.rim.device.api.util.Comparator

equals

Constructor Detail

InvertedOrderComparator

public InvertedOrderComparator(Comparator comparator)

Creates a new InvertedOrderComparator instance.

Parameters:

comparator - Comparator whose ordering to invert.

Method Detail

compare

public int compare(Object o1,
                   Object o2)

Compares two arguments for order.

This method simply invokes compare(o2,o1) on the Comparator parameter you passed to the constructor.

Specified by:

compare in interface Comparator

Parameters:

o1 - First object to compare.

o2 - Second object to compare.

Returns:

Negative integer if the first object is 'greater than' the second; a positive integer if the second object is 'less than' the second; zero if the two objects are 'equal'.