jas.util.pluginmanager
Class VersionNumberCompare

java.lang.Object
  |
  +--jas.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

static int	NOUPDATEVERSION
static int	UPDATEVERSION
static int	VERSIONCHECKERROR

Constructor Summary

VersionNumberCompare()

Method Summary

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

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

Field Detail

VERSIONCHECKERROR

public static final int VERSIONCHECKERROR

UPDATEVERSION

public static final int UPDATEVERSION

NOUPDATEVERSION

public static final int NOUPDATEVERSION

Constructor Detail

VersionNumberCompare

public VersionNumberCompare()

Method Detail

compareVersions

public int compareVersions(java.lang.String currentversion,
                           java.lang.String latestversion,
                           boolean throwexception)
                    throws jas.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.