Questions about Xerces and Xalan versions used in JAXP and JDKs have been asked many times.

The com.sun.org.apache.xalan.internal.xslt.EnvironmentCheck and Version classes (com.sun.org.apache.xerces.internal.impl.Version, com.sun.org.apache.xalan.internal.Version, com.sun.org.apache.xml.internal.serializer.Version) return incorrect version numbers and other information.

EnvironmentCheck currently returns:
#---- BEGIN writeEnvironmentReport($Revision: 1.9 $): Useful stuff found: ----
version.DOM.draftlevel=2.0fd
java.class.path=.;C:\Sun\Java\jre6\lib\ext\QTJava.zip
version.JAXP=1.1 or higher
java.ext.dirs=C:\Sun\Java\jdk1.5.0_17\jre\lib\ext
version.xerces2=Xerces-J 2.6.2
version.xerces1=not-present
version.xalan2_2=Xalan Java 2.6.0
version.xalan1=not-present
version.ant=not-present
java.version=1.5.0_17
version.DOM=2.0
version.crimson=not-present
sun.boot.class.path=C:\Sun\Java\jdk1.5.0_17\jre\lib\endorsed\jaxp-api.jar;C:\Sun\Java\jdk1.5.0_17\jre\lib\endorsed\jaxp-ri.jar;C:\Sun\Java\jdk1.5.0_17\jre\lib\r
t.jar;C:\Sun\Java\jdk1.5.0_17\jre\lib\i18n.jar;C:\Sun\Java\jdk1.5.0_17\jre\lib\sunrsasign.jar;C:\Sun\Java\jdk1.5.0_17\jre\lib\jsse.jar;C:\Sun\Java\jdk1.5.0_17\j
re\lib\jce.jar;C:\Sun\Java\jdk1.5.0_17\jre\lib\charsets.jar;C:\Sun\Java\jdk1.5.0_17\jre\classes
version.SAX=2.0
version.xalan2x=not-present
#----- END writeEnvironmentReport: Useful properties found: -----
# YAHOO! Your environment seems to be OK.