XOM API for Processing XML with Java

[luca passani <passani AT eunet.no>]

Hallo, I am building a library to be used with JSP and Servlets. The 
problem seems to be
with the XOM/Xerces. The msg is:

javax.servlet.ServletException: Cannot inherit from final class
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:249)

(see complete msg at bottom).
The question for you is if anyone has succesfully managed to run JSP 
pages which
rely on XOM/Xerces for XML parsing.

thank you and apologies if the question is so generic

Luca

root cause

java.lang.VerifyError: Cannot inherit from final class
        at java.lang.ClassLoader.defineClass0(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:502)
        at 
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)
        at 
org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1664)
        at 
org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:953)
        at 
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1394)
        at 
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1274)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:315)
        at 
org.apache.xerces.impl.XMLNSDocumentScannerImpl.createContentDispatcher(Unknown
 Source)
        at 
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.(XMLDocumentFragmentScannerImpl.java:249)
        at 
org.apache.xerces.impl.XMLDocumentScannerImpl.(XMLDocumentScannerImpl.java:245)
        at org.apache.xerces.impl.XMLNSDocumentScannerImpl.(Unknown Source)
        at 
org.apache.xerces.parsers.IntegratedParserConfiguration.createDocumentScanner(Unknown
 Source)
        at 
org.apache.xerces.parsers.DTDConfiguration.(DTDConfiguration.java:367)
        at 
org.apache.xerces.parsers.StandardParserConfiguration.(StandardParserConfiguration.java:198)
        at org.apache.xerces.parsers.IntegratedParserConfiguration.(Unknown 
Source)
        at org.apache.xerces.parsers.IntegratedParserConfiguration.(Unknown 
Source)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native 
Method)
        at 
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
        at 
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:274)
        at java.lang.Class.newInstance0(Class.java:306)
        at java.lang.Class.newInstance(Class.java:259)
        at 
org.apache.xerces.util.ObjectFactory.newInstance(ObjectFactory.java:266)
        at 
org.apache.xerces.util.ObjectFactory.findJarServiceProvider(ObjectFactory.java:360)
        at 
org.apache.xerces.util.ObjectFactory.createObject(ObjectFactory.java:185)
        at 
org.apache.xerces.util.ObjectFactory.createObject(ObjectFactory.java:120)
        at org.apache.xerces.parsers.DOMParser.(DOMParser.java:153)
        at org.apache.xerces.parsers.DOMParser.(DOMParser.java:137)
        at 
org.apache.xerces.jaxp.DocumentBuilderImpl.(DocumentBuilderImpl.java:102)
        at 
org.apache.xerces.jaxp.DocumentBuilderFactoryImpl.newDocumentBuilder(DocumentBuilderFactoryImpl.java:88)
        at 
org.apache.jasper.xmlparser.ParserUtils.parseXMLDocument(ParserUtils.java:167)
        at 
org.apache.jasper.compiler.TagLibraryInfoImpl.parseTLD(TagLibraryInfoImpl.java:247)
        at 
org.apache.jasper.compiler.TagLibraryInfoImpl.(TagLibraryInfoImpl.java:183)
        at 
org.apache.jasper.compiler.Parser.parseTaglibDirective(Parser.java:354)
        at org.apache.jasper.compiler.Parser.parseDirective(Parser.java:381)
        at org.apache.jasper.compiler.Parser.parseElements(Parser.java:800)
        at org.apache.jasper.compiler.Parser.parse(Parser.java:122)
        at 
org.apache.jasper.compiler.ParserController.parse(ParserController.java:199)
        at 
org.apache.jasper.compiler.ParserController.parse(ParserController.java:153)
        at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:223)
        at org.apache.jasper.compiler.Compiler.compile(Compiler.java:351)
        at 
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:474)
        at 
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:184)
        at 
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
        at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:260)
        at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
        at 
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
        at 
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
        at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
        at 
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
        at 
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at 
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2415)
        at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
        at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
        at 
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
        at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
        at 
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172)
        at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
        at 
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
        at 
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
        at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
        at 
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
        at 
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at 
org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223)
        at 
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:432)
        at 
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:386)
        at 
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:534)
        at 
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:530)
        at java.lang.Thread.run(Thread.java:536)

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