Maven Artifact classes, providing Artifact interface (javadoc), with its DefaultArtifact implementation (source).
The jar file is executable and provides a little tool to display how Maven parses and compares versions:
$ java -jar maven-artifact-*.jar 3.2.4-alpha-1 3.2.4-SNAPSHOT 3.2.4.0 Display parameters as parsed by Maven (in canonical form) and comparison result: 1. 3.2.4-alpha-1 == 3.2.4.alpha.1 3.2.4-alpha-1 < 3.2.4-SNAPSHOT 2. 3.2.4-SNAPSHOT == 3.2.4.snapshot 3.2.4-SNAPSHOT < 3.2.4.0 3. 3.2.4.0 == 3.2.4