Class.forName0 failing for xerces.jar sample program

I'm finding that java 1.4.0 beta-b63 is failing to run a sample program from the Apache xerces xml parser. It's complaing about not being able to find the SAXParser class. However, when I run this using an earlier version of java, it works fine.

timf@adia[7] ls -la *.jar
3232 -rw-r--r-- 1 timf elc 1646108 Mar 16 13:21 xerces.jar
 352 -rw-r--r-- 1 timf elc 167681 Mar 16 13:21 xercesSamples.jar

timf@adia[8] setenv CLASSPATH `pwd`/xerces.jar:`pwd`/xercesSamples.jar
timf@adia[9] java -fullversion
java full version "1.4.0-beta-b63"
timf@adia[10] java sax.SAXCount data/personal.xml
java.lang.ClassNotFoundException: org/apache/xerces/parsers/SAXParser
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:130)
at org.xml.sax.helpers.ParserFactory.makeParser(ParserFactory.java:124)
at sax.SAXCount.print(SAXCount.java:128)
at sax.SAXCount.main(SAXCount.java:382)

timf@adia[11] /usr/java1.2/bin/java -fullversion
java full version "Solaris_JDK_1.2.2_07a"
timf@adia[12] /usr/java1.2/bin/java sax.SAXCount data/personal.xml
data/personal.xml: 1614 ms (37 elems, 18 attrs, 140 spaces, 128 chars)

timf@adia[13] cat /etc/release
                              Solaris 9 s9_35 SPARC
           Copyright 2001 Sun Microsystems, Inc. All Rights Reserved.
                             Assembled 26 March 2001