On 28/07/14 15:00, Carmen Manzulli wrote:
Hi experts,
i'm trying to use some jena classes (as Query and QueryFactory) in a
project but when i run my code i get:
java.lang.NoClassDefFoundError:
com/hp/hpl/jena/shared/PrefixMapping$IllegalPrefixException
at com.hp.hpl.jena.query.QueryFactory.create(QueryFactory.java:68)
at com.hp.hpl.jena.query.QueryFactory.create(QueryFactory.java:40)
at com.hp.hpl.jena.query.QueryFactory.create(QueryFactory.java:28)
at sisinflab.Query2.compute(Query2.java:27)
and also :
java.lang.ClassNotFoundException:
com.hp.hpl.jena.shared.PrefixMapping$IllegalPrefixException
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
... 12 more
who can help me?
"NoClassDefFoundError" means it was there are compile time (of Jena) and
not at runtime (of your code).
You have an incomplete or incompatible set of jars files.
Andy
PS Please could you include things like version numbers (needed for line
numbers to mean anything), the query in question, etc when describing
something.
