newbies question: tomcat & jaxp-1.1

[Pierre-Yves . Verdon]

hi, 
i have just a little problem, i'm using jaxp-1.1. But jaxp-1.1 didn't
contain the file parser.jar. The xml parser for jaxp seems to be
crimson.jar

[verdon@pc-ccri-11 jaxp-1.1]# ls
License-ASF      License-W3C.html  docs      install.html 
readme.html    xalan.jar
License-RI.html  crimson.jar       examples  jaxp.jar      relnotes.html
[verdon@pc-ccri-11 jaxp-1.1]# find . -name parser.jar
[verdon@pc-ccri-11 jaxp-1.1]# 




So when compiling tomcat i get the following error:

No JAXP compliant XML parser found. See http://java.sun.com/xml for the
reference implementation.
--- Nested Exception ---
java.lang.ClassNotFoundException: javax.xml.parsers.SAXParserFactory
        at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:191)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:298)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:285)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:255)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:314)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:124)
        at org.apache.tools.ant.Main.runBuild(Main.java:402)
        at org.apache.tools.ant.Main.main(Main.java:149)



is someone knows how to help me ? or where can i get the previous
version of jaxp ?

--
thanks
pierre-yves VERDON