Exception on JDIFF 1.0.6

[Joseph Firebaugh]

I get the following error everytime I run JDIFF -- even the samples.  Any ideas why??  Thanks.

JDiff: reading the old API in from file 'SuperProduct_1.0.xml'...javadoc: In doclet class jdiff.JDiff,  method start has thrown an exception java.lang.reflect.InvocationTargetException
java.lang.IllegalArgumentException
        at sun.net.www.ParseUtil.decode(ParseUtil.java:94)
        at sun.misc.URLClassPath$FileLoader.<init>(URLClassPath.java:672)
        at sun.misc.URLClassPath$2.run(URLClassPath.java:254)
        at java.security.AccessController.doPrivileged(Native Method)
        at sun.misc.URLClassPath.getLoader(URLClassPath.java:248)
        at sun.misc.URLClassPath.getLoader(URLClassPath.java:225)
        at sun.misc.URLClassPath.getResource(URLClassPath.java:138)
        at java.net.URLClassLoader$ClassFinder.run(URLClassLoader.java:542)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:203)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:325)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:257)
        at jdiff.JDiff.startGeneration(JDiff.java:66)
        at jdiff.JDiff.start(JDiff.java:29)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.sun.tools.javadoc.DocletInvoker.invoke(DocletInvoker.java:197)
        at com.sun.tools.javadoc.DocletInvoker.start(DocletInvoker.java:99)

[Matthew Doar]

I'm not sure why the trace doesn't show it in more detail, (probably because it is invoked by reflection from the ANT Javadoc task), but what I believe is happening is that the appended code from XMLToApi.java is getting confused about where the Xerces parser is.

Can you run it using the .bat or .csh files? (May give more precise errors)
Try javap -classpath $CLASSPATH org.apache.xerces.parsers.SAXParser

and check that the Xerces.jar file shipped with JDiff is being found in the classpath.

You could also check that "org.xml.sax.driver" is not set in some variable being passed to java.

~Matt
doar@pobox.com
                String parserName = System.getProperty("org.xml.sax.driver");
                if (parserName == null) {
                    parser = org.xml.sax.helpers.XMLReaderFactory.createXMLReader("org.apache.xerces.parsers.SAXParser");
                } else {
                    // Let the underlying mechanisms try to work out which
                    // class to instantiate
                    parser = org.xml.sax.helpers.XMLReaderFactory.createXMLReader();
                }