to.etc.util

Class VersionNumber

java.lang.Object

to.etc.util.VersionNumber

All Implemented Interfaces:

Comparable<VersionNumber>

public final class VersionNumber
extends Object
implements Comparable<VersionNumber>

A version number represented as a string like "pppx.x.xsss". The version consists of an optional prefix, a list of dotted numbers of any length, and an optional suffix. Both prefix and suffix can only contain latin letters, and there is no punctuation between them and the dotted number.

The dotted number will always be "normalized", meaning that all trailing zeroes will be removed all of the time. In comparisons missing trailing numbers will behave as zeroes.

Author:

Frits Jalvingh Created on Nov 2, 2011

Constructor Summary

Constructors

Constructor and Description
VersionNumber(String prefix, int[] version, String suffix)

Method Summary

Modifier and Type	Method and Description
int	compareTo(VersionNumber o)
boolean	equals(Object obj)
int	hashCode()
boolean	isDevelopment() Return T if the version number starts with 99 or higher, as an indication this is a development thing.
boolean	isSameBase(VersionNumber o) Returns T if both numbers have the same prefix and suffix.
static void	main(String[] args)
static VersionNumber	parse(String input) Parses a version number in the format: pppx.x.xsss, where ppp is any non-numeric string, x.x.x is a repeated set of numbers separated by dots, and sss is another non-numeric string.
String	toString()
String	toString(int mindigits)

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

VersionNumber

public VersionNumber(String prefix,
                     int[] version,
                     String suffix)

Method Detail

toString

public String toString()

Overrides:

toString in class Object

toString

public String toString(int mindigits)

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

parse

public static VersionNumber parse(String input)
                           throws InvalidVersionNumberException

Parses a version number in the format: pppx.x.xsss, where ppp is any non-numeric string, x.x.x is a repeated set of numbers separated by dots, and sss is another non-numeric string. In the version number part (x.x.x) the code will always remove all trailing zeroes to normalize the version number.

Parameters:

input -

Returns:

Throws:

InvalidVersionNumberException

compareTo

public int compareTo(VersionNumber o)

Specified by:

compareTo in interface Comparable<VersionNumber>

isSameBase

public boolean isSameBase(VersionNumber o)

Returns T if both numbers have the same prefix and suffix. Meaningful version# comparison can be done only if this condition holds really.

Parameters:

o -

Returns:

isDevelopment

public boolean isDevelopment()

Return T if the version number starts with 99 or higher, as an indication this is a development thing.

Returns:

main

public static void main(String[] args)