java.lang.NoClassDefFoundError: com/hp/hpl/jena/ontology/OntModelSpec

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com/hp/hpl/jena/ontology/OntModelSpec
java.lang.NoClassDefFoundError: com/hp/hpl/jena/ontology/OntModelSpec
at ontocmp.OntoImpl.ontoCompare(OntoImpl.java:40)
at ontocmp.OntoIF_Tie.invoke_ontoCompare(OntoIF_Tie.java:92)
at ontocmp.OntoIF_Tie.processingHook(OntoIF_Tie.java:184)
at com.sun.xml.rpc.server.StreamingHandler.handle(StreamingHandler.java:321)
at com.sun.enterprise.webservice.JAXRPCServlet.doPost(JAXRPCServlet.java:50)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:767)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:860)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:273)
at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:162)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:236)
at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55)
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:145)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:141)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:262)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:225)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:173)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:132)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
at com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:618)
at com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:500)
at com.sun.enterprise.web.connector.grizzly.ProcessorTask.doTask(ProcessorTask.java:375)

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