bonjour,

Comment on peut enlevé ce type d'erreur (JDO)

javax.jdo.JDOFatalUserException: A property named javax.jdo.PersistenceManagerFactoryClass must be specified, or a jar file with a META-INF/services/javax.jdo.PersistenceManagerFactory entry must be in the classpath, or a property named javax.jdo.option.PersistenceUnitName must be specified.
at javax.jdo.JDOHelper.getPersistenceManagerFactory(JDOHelper.java:866)


merci