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From Dominique Devienne <>
Subject RE: classpath insanity
Date Wed, 04 Sep 2002 20:16:10 GMT
ClassLoader issues. Fork your task, if you can. --DD

-----Original Message-----
From: Guy McArthur [] 
Sent: Wednesday, September 04, 2002 3:11 PM
To: Ant Users List
Subject: classpath insanity

I've defined a project classpath, but when my task attempts to invoke 
Xalan, it bombs with the error:

java.lang.LinkageError: loader constraints violated when linking
org/xml/sax/InputSource class
     [java]     at 

The path looks like this (referenced with the refid attribute of a
classpath element:

  <property name="JAVA_LIB" location="/home/grs2001/software/java_lib"/>

  <path id="project.class.path">
        <!-- Core XML API's -->
        <pathelement location="${JAVA_LIB}/xml/xml-apis.jar"/>

        <!-- Xerces XML Engine -->
        <pathelement location="${JAVA_LIB}/xml/xercesImpl.jar"/>

        <!-- Xalan XSLT Engine -->
        <pathelement location="${JAVA_LIB}/xslt/xalan.jar"/>

        <!-- Xalan Extensions -->
        <pathelement location="${JAVA_LIB}/xslt/bsf.jar"/>

        <!-- JDOM XML Engine -->
        <pathelement location="${JAVA_LIB}/xml/jdom.jar"/>

        <!-- JDBC Thin drivers for Oracle 9i -->
        <pathelement location="${JAVA_LIB}/"/>


What is going on?

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