VersionStringComparator

Class Overview

Compares dotted version strings of varying length. Makes a best effort with other delimiters and non-numeric versions.

For dotted decimals, comparison is as you'd expect: 0.1 is before 0.2 is before 1.0 is before 2.0. This works for any number of dots.

More complicated version numbers are compared by splitting the version strings into components using the DELIMITER_PATTERN and comparing each component in order. The first difference found when comparing components left-to-right is returned.

Two numeric components (containing only digits) are compared as integers. A numeric component comes after any non-numeric one. Two non-numeric components are ordered by compareToIgnoreCase(String).

Summary

Constants
String	COMPONENT_PATTERN
String	DELIMITER_PATTERN
String	VALID_VERSION_PATTERN

Public Constructors
	VersionStringComparator()

Public Methods
int	compare(String version1, String version2) Compares two version strings using the algorithm described above.
static boolean	isValidVersionString(String version)

[Expand] Inherited Methods
From class java.lang.Object Object clone() boolean equals(Object arg0) void finalize() final Class<?> getClass() int hashCode() final void notify() final void notifyAll() String toString() final void wait() final void wait(long arg0, int arg1) final void wait(long arg0)
From interface java.util.Comparator int compare(T arg0, T arg1) boolean equals(Object arg0)