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.io.Serializable, 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

See Also:

Serialized Form

Constructor Summary

Constructors

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

Method Summary

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

Methods inherited from interface java.util.Comparator

comparing, comparing, comparingDouble, comparingInt, comparingLong, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

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