keystone.utilities

类 Version

java.lang.Object

keystone.utilities.Version

所有已实现的接口:

Comparable<Version>

public final class Version
extends Object
implements Comparable<Version>

Represents the version number of Keystone. This class cannot be inherited.

构造器概要

构造器

构造器和说明
Version(int major, int minor) Initializes a new instance of the Version class using the specified major and minor values.

方法概要

限定符和类型	方法和说明
int	compareTo(Version o) Compares this object with the specified object for order.
int	major() Gets the value of the major component of the version number for the current Version object.
int	minor() Gets the value of the minor component of the version number for the current Version object.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

Version

public Version(int major,
               int minor)

Initializes a new instance of the Version class using the specified major and minor values.

参数:

major - The major version number.

minor - The minor version number.

方法详细资料

major

public int major()

Gets the value of the major component of the version number for the current Version object.

返回:

The major version number.

minor

public int minor()

Gets the value of the minor component of the version number for the current Version object.

返回:

The minor version number.

compareTo

public int compareTo(Version o)

Compares this object with the specified object for order. Returns a negative integer, zero, or a positive integer as this object is less than, equal to, or greater than the specified object.

The implementor must ensure sgn(x.compareTo(y)) == -sgn(y.compareTo(x)) for all x and y. (This implies that x.compareTo(y) must throw an exception iff y.compareTo(x) throws an exception.)

The implementor must also ensure that the relation is transitive: (x.compareTo(y)>0 && y.compareTo(z)>0) implies x.compareTo(z)>0.

Finally, the implementor must ensure that x.compareTo(y)==0 implies that sgn(x.compareTo(z)) == sgn(y.compareTo(z)), for all z.

It is strongly recommended, but not strictly required that (x.compareTo(y)==0) == (x.equals(y)). Generally speaking, any class that implements the Comparable interface and violates this condition should clearly indicate this fact. The recommended language is "Note: this class has a natural ordering that is inconsistent with equals."

In the foregoing description, the notation sgn(expression) designates the mathematical signum function, which is defined to return one of -1, 0, or 1 according to whether the value of expression is negative, zero or positive.

指定者:

compareTo 在接口中 Comparable<Version>

参数:

o - the object to be compared.

返回:

a negative integer, zero, or a positive integer as this object is less than, equal to, or greater than the specified object.

抛出:

NullPointerException - if the specified object is null

ClassCastException - if the specified object's type prevents it from being compared to this object.