<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
    "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
    "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">


 <hibernate-configuration>
<session-factory>

    <property name="hibernate.connection.driver_class">org.postgresql.Driver</property>
    <property name="hibernate.connection.url">jdbc:postgresql://localhost:5432/projet_hibernate</property>
    <property name="hibernate.connection.username">postgres</property>
    <property name="hibernate.connection.password">password</property>
    <property name="connection_pool_size">1</property>
    <property name="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</property>
    <property name="current_session_context_class">thread</property>

    <!-- Disable the second-level cache  -->
    <property name="cache.provider_class">org.hibernate.cache.internal.NoCacheProvider</property>

    <property name="show_sql">true</property>
    <property name="hbm2ddl.auto">create</property>

    <mapping resource="bean/Lecteurs.hbm.xml"/>
</session-factory>

package util;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.AnnotationConfiguration;
//import org.hibernate.cfg.Configuration;

 public class HibernateUtil {

public static final SessionFactory sessionFactory = buildSessionFactory();

private static SessionFactory buildSessionFactory() {
    try {
        // Create the SessionFactory from hibernate.cfg.xml
        return new AnnotationConfiguration().configure().buildSessionFactory();

    }
    catch (Throwable ex) {
        // Make sure you log the exception, as it might be swallowed
        System.err.println("Initial SessionFactory creation failed." + ex);
        throw new ExceptionInInitializerError(ex);
    }
}

public static SessionFactory getSessionFactory(){
    return sessionFactory;

}

public static void shutdown() {
    // Close caches and connection pools
    getSessionFactory().close();
}
}

Initial SessionFactory creation failed.java.lang.NoClassDefFoundError:     org/hibernate/annotations/common/reflection/ReflectionManager
 Exception in thread "main" java.lang.ExceptionInInitializerError
at util.HibernateUtil.buildSessionFactory(HibernateUtil.java:20)
at util.HibernateUtil.<clinit>(HibernateUtil.java:9)
at manager.LecteursManager.ajouterLecteur(LecteursManager.java:14)
at test.Test_Main.main(Test_Main.java:18)
Caused by: java.lang.NoClassDefFoundError:  org/hibernate/annotations/common/reflection/ReflectionManager
at util.HibernateUtil.buildSessionFactory(HibernateUtil.java:14)
... 3 more
Caused by: java.lang.ClassNotFoundException: org.hibernate.annotations.common.reflection.ReflectionManager
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)
... 4 more