Class NullComparator<T>

java.lang.Object

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

Type Parameters:

T - element type

All Implemented Interfaces:

Serializable, Comparator<T>

public class NullComparator<T>
extends Object

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

Author:

Thomas Mauch

See Also:

• Serialized Form

Constructor Summary

Constructors

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

Method Summary

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

Methods inherited from class Object

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

Methods inherited from interface Comparator

reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Constructor Details

NullComparator

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

Constructor.

Parameters:

comparator - comparator to extend

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

Method Details

compare

public int compare(T key1,
 T key2)

equals

public boolean equals(Object that)

Specified by:

equals in interface Comparator<T>

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object