versionsort

Class VersionHelper

java.lang.Object

versionsort.VersionHelper

public class VersionHelper
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
VersionHelper()

Method Summary

Modifier and Type	Method and Description
static int	compare(java.lang.String str1, java.lang.String str2) Compares two version strings.

Methods inherited from class java.lang.Object

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

Constructor Detail

VersionHelper

public VersionHelper()

Method Detail

compare

public static int compare(java.lang.String str1,
                          java.lang.String str2)

Compares two version strings. Use this instead of String.compareTo() for a non-lexicographical comparison that works for version strings. e.g. "1.10".compareTo("1.6"). note: It does not work if "1.10" is supposed to be equal to "1.10.0".

Parameters:

str1 - a string of ordinal numbers separated by decimal points.

str2 - a string of ordinal numbers separated by decimal points.

Returns:

The result is a negative integer if str1 is _numerically_ less than str2. The result is a positive integer if str1 is _numerically_ greater than str2. The result is zero if the strings are _numerically_ equal. note: this is copy paste driven development originally posted by Alex Gitelman on https://stackoverflow.com/a/6702029/452762