Jigadmin problem: ClassNotFoundException

I seem to be getting a ClassNotFoundException when I try to run JigAdmin
(ver 2.0).  The class, which the JVM can't find, HttpDate, is present in
jigsaw.zip and IS on the classpath.  Has anybody got a solution for this
seemingly strange problem.

P.S. Im using JDK 1.2.  The reported error is given below.

E:\JavaPrograms\Jigsaw>java org.w3c.jigadm.Main -root
E:\JavaPrograms\Jigsaw\Jigsaw http://localhost:8009
java.lang.ClassNotFoundException: org/w3c/www/http/HttpDate
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Compiled Code)
        at
org.w3c.www.http.HeaderDescription.<init>(HeaderDescription.java:64)
        at org.w3c.www.http.HttpMessage.registerHeader(HttpMessage.java:95)
        at
org.w3c.www.http.HttpEntityMessage.<clinit>(HttpEntityMessage.java:61)
        at org.w3c.www.protocol.http.HttpManager.<init>(HttpManager.java:826)
        at org.w3c.www.protocol.http.HttpManager.getManager(Compiled Code)
        at
org.w3c.www.protocol.http.HttpManager.getManager(HttpManager.java:400)
        at org.w3c.jigsaw.admin.AdminContext.<init>(AdminContext.java:215)
        at org.w3c.jigadm.gui.ServerBrowser.main(Compiled Code)
        at org.w3c.jigadm.Main.main(Main.java:19)
Exception in thread "main" java.lang.ExceptionInInitializerError:
java.lang.Runt
imeException: Invalid header description last-modified
        at
org.w3c.www.http.HeaderDescription.<init>(HeaderDescription.java:68)
        at org.w3c.www.http.HttpMessage.registerHeader(HttpMessage.java:95)
        at
org.w3c.www.http.HttpEntityMessage.<clinit>(HttpEntityMessage.java:61)
        at org.w3c.www.protocol.http.HttpManager.<init>(HttpManager.java:826)
        at org.w3c.www.protocol.http.HttpManager.getManager(Compiled Code)
        at
org.w3c.www.protocol.http.HttpManager.getManager(HttpManager.java:400)
        at org.w3c.jigsaw.admin.AdminContext.<init>(AdminContext.java:215)
        at org.w3c.jigadm.gui.ServerBrowser.main(Compiled Code)
        at org.w3c.jigadm.Main.main(Main.java:19)

Received on Tuesday, 26 January 1999 08:37:41 UTC