org.magicwerk.brownies.collections.helper

Class NullComparator<T>

java.lang.Object

org.magicwerk.brownies.collections.helper.NullComparator<T>

Type Parameters:

T - element type

All Implemented Interfaces:

java.util.Comparator<T>

public class NullComparator<T>
extends java.lang.Object

A NullComparator extends an existing comparator so it can handle null values.

Version:

$Id: NullComparator.java 2923 2015-09-02 23:01:46Z origo $

Author:

Thomas Mauch

Constructor Summary

Constructors

Constructor and Description
NullComparator(java.util.Comparator<T> comparator, boolean nullsFirst) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
int	compare(T key1, T key2)
boolean	equals(java.lang.Object that)
int	hashCode()

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

NullComparator

public NullComparator(java.util.Comparator<T> comparator,
              boolean nullsFirst)

Constructor.

Parameters:

comparator - comparator to extend

nullsFirst - true to sort nulls first, false to sort null last

Method Detail

compare

public int compare(T key1,
          T key2)

equals

public boolean equals(java.lang.Object that)

Specified by:

equals in interface java.util.Comparator<T>

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object