| Interface | Description | 
|---|---|
| ArtifactVersion | Describes an artifact version in terms of its components, converts it to/from a string and
 compares two versions. | 
| Class | Description | 
|---|---|
| ComparableVersion | Generic implementation of version comparison. | 
| DefaultArtifactVersion | Default implementation of artifact versioning. | 
| Restriction | Describes a restriction in versioning. | 
| VersionRange | Construct a version range from a specification. | 
| Exception | Description | 
|---|---|
| InvalidVersionSpecificationException | Occurs when a version is invalid. | 
| OverConstrainedVersionException | Occurs when ranges exclude each other and no valid value remains. | 
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