Class JavaVersion

java.lang.Object

org.codehaus.plexus.languages.java.version.JavaVersion

All Implemented Interfaces:

Comparable<JavaVersion>

public class JavaVersion
extends Object
implements Comparable<JavaVersion>

Since:

1.0.0

Author:

Robert Scholte

See Also:

• Java SE Naming and Versions
• JEP 223: New Version-String Scheme
• JEP 322: Time-Based Release Versioning

Field Summary

Fields

Modifier and Type	Field	Description
static final JavaVersion	JAVA_SPECIFICATION_VERSION	Represents the System property java.specification.version
static final JavaVersion	JAVA_VERSION	Represents the System property java.version

Method Summary

Modifier and Type	Method	Description
JavaVersion	asMajor()	If original version starts with "1.", then remove this part from the version
int	compareTo(JavaVersion other)
boolean	equals(Object obj)
String	getValue()	Returns the original version
String	getValue(int groups)	Returns a value respecting the nuber of groups. If the original has more groups, the end of that value will be removed. If the original has less groups, the value will be extended this ".0".
int	hashCode()
boolean	isAtLeast(String other)	Verify if this version is at least some other version
boolean	isAtLeast(JavaVersion other)	Verify if this version is at least some other version
boolean	isBefore(String other)	Verify if this version is before some other version
boolean	isBefore(JavaVersion other)	Verify if this version is before some other version
static JavaVersion	parse(String s)	Lazy parse the version-scheme.
String	toString()

Methods inherited from class java.lang.Object

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

Field Details

JAVA_SPECIFICATION_VERSION

public static final JavaVersion JAVA_SPECIFICATION_VERSION

Represents the System property java.specification.version

JAVA_VERSION

public static final JavaVersion JAVA_VERSION

Represents the System property java.version

Method Details

parse

public static JavaVersion parse(String s)

Lazy parse the version-scheme. Actual parsing is done when calling compareTo(JavaVersion)

Parameters:

s - the version string, never null

Returns:

the version wrapped in a JavaVersion

compareTo

public int compareTo(JavaVersion other)

Specified by:

compareTo in interface Comparable<JavaVersion>

isBefore

public boolean isBefore(JavaVersion other)

Verify if this version is before some other version

Parameters:

other - the version to compare with

Returns:

true is this is less than other, otherwise false

isBefore

public boolean isBefore(String other)

Verify if this version is before some other version

Parameters:

other - the version to compare with

Returns:

true is this is less than other, otherwise false

isAtLeast

public boolean isAtLeast(JavaVersion other)

Verify if this version is at least some other version

Parameters:

other - the version to compare with

Returns:

true is this is greater than or equal to other, otherwise false

isAtLeast

public boolean isAtLeast(String other)

Verify if this version is at least some other version

Parameters:

other - the version to compare with

Returns:

true is this is greater than or equal to other, otherwise false

asMajor

public JavaVersion asMajor()

If original version starts with "1.", then remove this part from the version

Returns:

a new JavaVersion if version has to be changed, otherwise return itself

getValue

public String getValue()

Returns the original version

Returns:

the raw version

getValue

public String getValue(int groups)

Returns a value respecting the nuber of groups.
If the original has more groups, the end of that value will be removed.
If the original has less groups, the value will be extended this ".0".

   JavaVersion.parse( "1" ).getValue( 1 )   is "1"
   JavaVersion.parse( "1" ).getValue( 2 )   is "1.0"
   JavaVersion.parse( "2.1" ).getValue( 1 ) is "2"
   JavaVersion.parse( "2.1" ).getValue( 2 ) is "2.1"
 

Parameters:

groups - number of groups to return

Returns:

the version respecting the number of groups

toString

public String toString()

Overrides:

toString in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object