se.sawano.java.text

Class AlphanumericComparator

java.lang.Object

se.sawano.java.text.AlphanumericComparator

All Implemented Interfaces:

Comparator<CharSequence>

public class AlphanumericComparator
extends Object
implements Comparator<CharSequence>

An implementation of a comparator that sort strings in an order that makes sense for a human.

This source can be found at https://github.com/sawano/alphanumeric-comparator

Note: this algorithm does not take into account numeric notation such as decimals, negative numbers, scientific notation etc.

Author:

Daniel Sawano, Copyright 2014

Constructor Summary

Constructors

Constructor and Description
AlphanumericComparator() Creates a comparator that will use lexicographical sorting of the non-numerical parts of the compared strings.
AlphanumericComparator(Collator collator) Creates a comparator that will use the given collator to sort the non-numerical parts of the compared strings.
AlphanumericComparator(Locale locale) Creates a comparator that will use locale-sensitive sorting of the non-numerical parts of the compared strings.

Method Summary

Modifier and Type	Method and Description
int	compare(CharSequence s1, CharSequence s2)

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Comparator

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

Constructor Detail

AlphanumericComparator

public AlphanumericComparator()

Creates a comparator that will use lexicographical sorting of the non-numerical parts of the compared strings.

AlphanumericComparator

public AlphanumericComparator(Locale locale)

Creates a comparator that will use locale-sensitive sorting of the non-numerical parts of the compared strings.

Parameters:

locale - the locale to use

AlphanumericComparator

public AlphanumericComparator(Collator collator)

Creates a comparator that will use the given collator to sort the non-numerical parts of the compared strings.

Parameters:

collator - the collator to use

Method Detail

compare

public int compare(CharSequence s1,
                   CharSequence s2)

Specified by:

compare in interface Comparator<CharSequence>