耶拿简单示例java.lang.NoClassDefFoundError

Question

我尝试了这个简单的示例，花了几个小时仍无法解决问题。我想知道是否有人知道吗？

import org.apache.jena.rdf.model.*;
import org.apache.jena.vocabulary.*;

/** Tutorial 1 creating a simple model
*/

public class Tutorial01 extends Object {
    // some definitions
    static String personURI    = "http://somewhere/JohnSmith";
    static String fullName     = "John Smith";

  public static void main (String args[]) {
    // create an empty model
    Model model = ModelFactory.createDefaultModel();

   // create the resource
   Resource johnSmith = model.createResource(personURI);

  // add the property
  johnSmith.addProperty(VCARD.FN, fullName);
  }
}

运行程序之后。.

Exception in thread "main" java.lang.NoClassDefFoundError: 
org/apache/jena/rdf/model/ModelFactory
at jena.Tutorial01.main(Tutorial01.java:17)
Caused by: java.lang.ClassNotFoundException: 
org.apache.jena.rdf.model.ModelFactory
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 1 more