Specifically, you'll need to include the commons-logging jar file in your classpath. Typically that would mean specifying a directory which includes that jar file as well as the jar files for the jena library and any other dependency library. You'll probably also need to include one for log4j or simple logging (slf4j) library.
> -----Original Message----- > From: Milorad Tosic [mailto:[email protected]] > Sent: Saturday, March 30, 2013 9:07 AM > To: aarthi; users > Subject: Re: > > Looks like you need to include an additional library for > org.apache.commons.logging.LogFactory class. > > Regards, > Milorad > > > > > > >________________________________ > > From: aarthi <[email protected]> > >To: Milorad Tosic <[email protected]>; users <[email protected]> > >Sent: Saturday, March 30, 2013 1:56 PM > >Subject: > > > >hi.. > > i'm doing my project with ontology. i need to retrieve the class and > >properties names in order to compare them for equality. to retrieve > the > >class an property names i'm using a java code. i have attached that > >code with this mail. but i got some error, I don't know how to resolve > >that. for that i had import com.hp.hpl.jena package. i dont get the > >classpath files and javadoc files. is it enough if i add only the > >source package? pls help me.... > > > >this is my code: > > > > > >//package testejena; > >import com.hp.hpl.jena.ontology.OntClass; > >import com.hp.hpl.jena.ontology.OntModel; > >import com.hp.hpl.jena.ontology.OntModelSpec; > >import com.hp.hpl.jena.rdf.model.ModelFactory; > >import com.hp.hpl.jena.util.FileManager; import > >com.hp.hpl.jena.util.iterator.ExtendedIterator; > >import java.io.InputStream; > >import java.util.Iterator; > > > >public class testeProp { > > static final String inputFileName = "newspaper.owl"; > > public static void main(String args[]) { > > try { > > //create the reasoning model using the base > > OntModel inf = > >ModelFactory.createOntologyModel(OntModelSpec.OWL_MEM); > > > > // use the FileManager to find the input file > > InputStream in = FileManager.get().open(inputFileName); > > if (in == null) { > > throw new IllegalArgumentException("File: " + > >inputFileName + " not found"); > > } > > > > inf.read(in, ""); > > > > String URI = > >"http://www.owl-ontologies.com/Ontology1363337688.owl#";; > > > > ExtendedIterator classes = inf.listClasses(); > > while (classes.hasNext()) { > > OntClass essaClasse = (OntClass) classes.next(); > > > > String vClasse = essaClasse.getLocalName().toString(); > > > > if (essaClasse.hasSubClass()) { > > System.out.println("Classe: " + vClasse); > > OntClass cla = inf.getOntClass(URI + vClasse); > > for (Iterator i = cla.listSubClasses(); > >i.hasNext();) { > > OntClass c = (OntClass) i.next(); > > System.out.print(" " + c.getLocalName() + " > " > >+ "\n"); > > } > > } > > } > > } catch (Exception e) { > > System.out.println("there may be error"); > > System.out.println(e.getMessage()); > > } > > } > >} > > > > > >---------------------------------------------------------------------- > - > >--------------------------- if i run my program i got the following > >error: > > > > > >Exception in thread "main" java.lang.NoClassDefFoundError: > >org/apache/commons/logging/LogFactory > > at > >com.hp.hpl.jena.rdf.model.impl.PropertyImpl.<clinit>(PropertyImpl.java > : > >58) > > at > >com.hp.hpl.jena.enhanced.BuiltinPersonalities.<clinit>(BuiltinPersonal > i > >ties.java:28) > > at > >com.hp.hpl.jena.rdf.model.impl.ModelCom.<init>(ModelCom.java:51) > > at > >com.hp.hpl.jena.rdf.model.ModelFactory.createDefaultModel(ModelFactory > . > >java:119) > > at > >com.hp.hpl.jena.rdf.model.ModelFactory.createDefaultModel(ModelFactory > . > >java:113) > > at > >com.hp.hpl.jena.rdf.model.impl.ModelSpecImpl.<clinit>(ModelSpecImpl.ja > v > >a:56) > > at testeProp.main(testeProp.java:16) Caused by: > >java.lang.ClassNotFoundException: > >org.apache.commons.logging.LogFactory > > at java.net.URLClassLoader$1.run(URLClassLoader.java:202) > > at java.security.AccessController.doPrivileged(Native Method) > > at java.net.URLClassLoader.findClass(URLClassLoader.java:190) > > at java.lang.ClassLoader.loadClass(ClassLoader.java:307) > > at > >sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) > > at java.lang.ClassLoader.loadClass(ClassLoader.java:248) > > ... 7 more > >Java Result: 1 > >BUILD SUCCESSFUL (total time: 0 seconds) > > > > > > > > > > > > > >please anyone help me... > > > > > >
