org.zkoss.util

Class Utils

java.lang.Object

org.zkoss.util.Utils

public class Utils
extends java.lang.Object

Generic utilities.

Since:

3.0.0

Author:

tomyeh

Constructor Summary

Constructors

Constructor and Description
Utils()

Method Summary

Modifier and Type	Method and Description
static int	compareVersion(int[] v1, int[] v2) Compares two version.
static int	getSubversion(java.lang.String version, int portion) Returns a portion of the specified version in an integer, or 0 if no such portion exists.
static int[]	parseVersion(java.lang.String version) Parses the specified version into an array of integer.

Methods inherited from class java.lang.Object

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

Constructor Detail

Utils

public Utils()

Method Detail

getSubversion

public static final int getSubversion(java.lang.String version,
                                      int portion)

Returns a portion of the specified version in an integer, or 0 if no such portion exists.

For example, getSubversion(0) returns the so-called major version (2 in "2.4.0"), and getSubversion(1) returns the so-called minor version (4 in "2.4.0").

Note: alpha is consider as -500, beta -300, and rc -100. Moreover, beta3 is -497 (= -500 + 3) and rc5 -95 (-100 + 5)

Parameters:

version - the version. The version is assumed to a series of integer separated by a non-alphanumeric separator.

portion - which portion of the version; starting from 0. If you want to retrieve the major version, specify 0.

Since:

3.0.0

parseVersion

public static final int[] parseVersion(java.lang.String version)

Parses the specified version into an array of integer. For example, parseVersion("3.5.2") will return [3, 5, 2].

Since:

3.5.2

compareVersion

public static final int compareVersion(int[] v1,
                                       int[] v2)

Compares two version.

Returns:

0 if equals, 1 if the first one is larger, -1 if smaller.

Since:

3.5.2