VersionNumber (Version Number Library 1.11 API)

java.lang.Object
- hudson.util.VersionNumber

All Implemented Interfaces:

Comparable<VersionNumber>

Direct Known Subclasses:

JavaSpecificationVersion
```
public class VersionNumber
extends Object
implements Comparable<VersionNumber>
```
Immutable representation of a version number based on the Mercury version numbering scheme. VersionNumbers are Comparable.
Special tokens

We allow a component to be not just a number, but also "ea", "ea1", "ea2". "ea" is treated as "ea0", and eaN < M for any M < 0.
'*' is also allowed as a component, and '*' < M for any M < 0.
'SNAPSHOT' is also allowed as a component, and "N.SNAPSHOT" is interpreted as "N-1.*" This class is re-implemented in 1.415. The class was originally introduced in 1.139

Since:

1.139

Author:

Stephen Connolly (stephenc@apache.org), Kenney Westerhof (kenney@apache.org), Hervé Boutemy (hboutemy@apache.org)

Field Summary

Fields
Modifier and Type Field Description

static Comparator<VersionNumber> DESCENDING

Constructor Summary

Constructors
Constructor Description

VersionNumber(String version)

Method Summary

All Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method	Description
`int`	`compareTo(VersionNumber o)`
`int`	`digit(int idx)`	Deprecated. see `getDigitAt(int)`
`boolean`	`equals(Object o)`
`int`	`getDigitAt(int idx)`	Returns a digit (numeric component) by its position.
`int`	`hashCode()`
`boolean`	`isNewerThan(VersionNumber rhs)`
`boolean`	`isNewerThanOrEqualTo(VersionNumber rhs)`
`boolean`	`isOlderThan(VersionNumber rhs)`
`boolean`	`isOlderThanOrEqualTo(VersionNumber rhs)`
`String`	`toString()`

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Field Detail
  - DESCENDING
```
public static final Comparator<VersionNumber> DESCENDING
```
- Constructor Detail
  - VersionNumber
```
public VersionNumber(String version)
```
- Method Detail
  - compareTo
```
public int compareTo(VersionNumber o)
```
    Specified by:
    
    compareTo in interface Comparable<VersionNumber>
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object
  - equals
```
public boolean equals(Object o)
```
    Overrides:
    
    equals in class Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object
  - isOlderThan
```
public boolean isOlderThan(VersionNumber rhs)
```
  - isNewerThan
```
public boolean isNewerThan(VersionNumber rhs)
```
  - isOlderThanOrEqualTo
```
public boolean isOlderThanOrEqualTo(VersionNumber rhs)
```
  - isNewerThanOrEqualTo
```
public boolean isNewerThanOrEqualTo(VersionNumber rhs)
```
  - digit
```
@Deprecated
public int digit(int idx)
```
    Deprecated.
    see getDigitAt(int)
  - getDigitAt
```
public int getDigitAt(int idx)
```
    Returns a digit (numeric component) by its position. Once a non-numeric component is found all remaining components are also considered non-numeric by this method.
    
    Parameters:
    
    idx - Digit position we want to retrieve starting by 0.
    
    Returns:
    
    The digit or -1 in case the position does not correspond with a digit.