ClassCastException: org.apache.xerces.parsers.XIncludeAwareParserConfiguration cannot be cast to org.apache.xerces.xni.parser.XMLParserConfiguration

Question

I am developing a GWT application in Eclipse and use jdom2 to read some custom xml property files.

Following a recent update my application now fails with the above

Answer 1

In my case I resolved this issue by adding to bootstrap entities (Classpath tab in run configuration) two entries /xml-apis/xml-apis/1.4.01/xml-apis-1.4.01.jar and /xerces/xercesImpl/2.11.0/xercesImpl-2.11.0.jar from my local maven repository