jas2.util.pluginmanager

Class VersionNumberCompare

java.lang.Object

jas2.util.pluginmanager.VersionNumberCompare

public class VersionNumberCompare
extends java.lang.Object

This class is used to compare version numbers. The only method in this class converts both the currentversion and the latest version (method arguments) strings into string chunks (i.e. if string = 2.0.4, then ints are 2,0,4). The string chunks are then converted to ints and compared one at a time. If a latest version chunk is > than a current version chunk an update is available and UPDATEVERSION is returned. If all chunks are equal then NOUPDATEVERSION is available. If a latest chunk is < current chunk or Strings can't be converted to ints an Exception is thrown.

Field Summary

Fields

Modifier and Type	Field and Description
static int	NOUPDATEVERSION
static int	UPDATEVERSION
static int	VERSIONCHECKERROR

Constructor Summary

Constructors

Constructor and Description
VersionNumberCompare()

Method Summary

Modifier and Type	Method and Description
int	compareVersions(java.lang.String currentversion, java.lang.String latestversion, boolean throwexception) This method converts both the currentversion and the latest version (method arguments) strings into string chunks (i.e.

Methods inherited from class java.lang.Object

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

Field Detail

VERSIONCHECKERROR

public static final int VERSIONCHECKERROR

See Also:

Constant Field Values

UPDATEVERSION

public static final int UPDATEVERSION

See Also:

Constant Field Values

NOUPDATEVERSION

public static final int NOUPDATEVERSION

See Also:

Constant Field Values

Constructor Detail

VersionNumberCompare

public VersionNumberCompare()

Method Detail

compareVersions

public int compareVersions(java.lang.String currentversion,
                           java.lang.String latestversion,
                           boolean throwexception)
                    throws jas2.util.pluginmanager.VersionNumberCompare.VersionCompareException

This method converts both the currentversion and the latest version (method arguments) strings into string chunks (i.e. if string = 2.0.4, then ints are 2,0,4). The string chunks are then converted to ints and compared one at a time. If a latest version chunk is > than a current version chunk an update is available and UPDATEVERSION is returned. If all chunks are equal then NOUPDATEVERSION is available. The boolean throw exception controls whether the VersionNumberCompare exception will be thrown when a latestversion chunk is less than a current version chunk.

Throws:

jas2.util.pluginmanager.VersionNumberCompare.VersionCompareException