não consigo usar hibernate no eclipse

public class HibernateUtil {

    private static Log log = LogFactory.getLog(HibernateUtil.class);
    private static final SessionFactory sessionFactory;

    static {
        try {
            // Create the SessionFactory                
            sessionFactory = new Configuration().configure().buildSessionFactory();
           
        } catch (Throwable ex) {
            
            log.error("Initial SessionFactory creation failed.", ex);
            throw new ExceptionInInitializerError(ex);
            
        } // end of the try - catch block
        
    } // end of static block

    public static final ThreadLocal session = new ThreadLocal();

    public static Session currentSession() throws HibernateException {
        
        Session s = (Session) session.get();
        
        // Open a new Session, if this Thread has none yet
        if (s == null) {
            s = sessionFactory.openSession();
            session.set(s);
        }
        return s;
    }

    public static void closeSession() throws HibernateException {
        Session s = (Session) session.get();
        session.set(null);
        if (s != null)
            s.close();
    } // end of the method

} // end of the class

<!DOCTYPE hibernate-configuration PUBLIC
	"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
	"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
	<session-factory>
		<property name="hibernate.connection.driver_class">
			org.apache.derby.jdbc.ClientDriver
		</property>
		<property name="hibernate.connection.url">
			jdbc:derby://localhost:1527/D:/tempEclipse/bancos/HerancaJPA;create=true
		</property>
		<property name="hibernate.connection.username">
			utfpr
		</property>
		<property name="hibernate.connection.password">
			utfpr
		</property>
		<property name="hibernate.dialect">
			org.hibernate.dialect.DerbyDialect
		</property>
		<property name="hibernate.hbm2ddl.auto">
			create
		</property>
		<property name="show_sql">true</property>
		<property name="format_sql">true</property>
		<property name="use_sql_comments">false</property>
		
		<!-- TABLE_PER_CLASS -->
		<mapping class="pojo.Carga"/>
		<mapping class="pojo.Pessoas"/>
		<mapping class="pojo.Militar"/>
		<mapping class="pojo.Passageiro"/> 
		
		<!-- JOINED
		<mapping class="pojo.Pessoa"/>
		<mapping class="pojo.Fisica"/>  
		<mapping class="pojo.Juridica"/> 
		-->
		
		<!-- SINGLE_TABLE 
		<mapping class="pojo.Pessoa"/>
		<mapping class="pojo.Fisica"/>  
		<mapping class="pojo.Juridica"/> 
		-->
		
	</session-factory>
</hibernate-configuration>