Version (Apache OpenNLP Tools 1.9.5 API)
Date: 2026-06-18

opennlp.tools.util

## Class Version

- java.lang.Object
- - opennlp.tools.util.Version

-     public class Version
      extends Object

  The `Version` class represents the OpenNlp Tools library version.

  The version has three parts:

  - Major: OpenNlp Tools libraries with a different major version are not interchangeable.
  - Minor: OpenNlp Tools libraries with an identical major version, but different minor version may be interchangeable. See release notes for further details.
  - Revision: OpenNlp Tools libraries with same major and minor version, but a different revision, are fully interchangeable.

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `static Version` | `DEV_VERSION`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `Version(int major, int minor, int revision)` Initializes the current instance with the provided versions.
    `Version(int major, int minor, int revision, boolean snapshot)` Initializes the current instance with the provided versions.

  - ### Method Summary

    All Methods Static Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `static Version` | `currentVersion()` Retrieves the current version of the OpenNlp Tools library.
    `boolean` | `equals(Object obj)`
    `int` | `getMajor()` Retrieves the major version.
    `int` | `getMinor()` Retrieves the minor version.
    `int` | `getRevision()` Retrieves the revision version.
    `int` | `hashCode()`
    `boolean` | `isSnapshot()`
    `static Version` | `parse(String version)` Return a new `Version` initialized to the value represented by the specified `String`
    `String` | `toString()` Retrieves the version string.

    - ### Methods inherited from class java.lang.Object

      `getClass, notify, notifyAll, wait, wait, wait`

- - ### Field Detail

    - #### DEV_VERSION

          public static final Version DEV_VERSION

  - ### Constructor Detail

    - #### Version

          public Version(int major,
                         int minor,
                         int revision,
                         boolean snapshot)

      Initializes the current instance with the provided versions.
      Parameters:
        `major` -
        `minor` -
        `revision` -
        `snapshot` -

    - #### Version

          public Version(int major,
                         int minor,
                         int revision)

      Initializes the current instance with the provided versions. The version will not be a snapshot version.
      Parameters:
        `major` -
        `minor` -
        `revision` -

  - ### Method Detail

    - #### getMajor

          public int getMajor()

      Retrieves the major version.
      Returns:
        major version

    - #### getMinor

          public int getMinor()

      Retrieves the minor version.
      Returns:
        minor version

    - #### getRevision

          public int getRevision()

      Retrieves the revision version.
      Returns:
        revision version

    - #### isSnapshot

          public boolean isSnapshot()

    - #### toString

          public String toString()

      Retrieves the version string. The `parse(String)` method can create an instance of `Version` with the returned version value string.
      Overrides:
        `toString` in class `Object`
      Returns:
        the version value string

    - #### hashCode

          public int hashCode()

      Overrides:
        `hashCode` in class `Object`

    - #### equals

          public boolean equals(Object obj)

      Overrides:
        `equals` in class `Object`

    - #### parse

          public static Version parse(String version)

      Return a new `Version` initialized to the value represented by the specified `String`
      Parameters:
        `version` - the string to be parsed
      Returns:
        the version represented by the string value
      Throws:
        `NumberFormatException` - if the string does not contain a valid version

    - #### currentVersion

          public static Version currentVersion()

      Retrieves the current version of the OpenNlp Tools library.
      Returns:
        the current version

Copyright © 2026 The Apache Software Foundation. All rights reserved.