Erro ao conectar Hibernate

Programação
#1

Sres.(as), meu projeto estadando o seguinte erro:

Erro aoiniciar a sessionFactory. Erro: Absent Code attribute in method that is not native or abstract in class file javax/transaction/SystemException
Exception in thread “main” java.lang.NullPointerException
at br.com.javaparaweb.capitulo3.conexao.ConectaHibernateMySQL.main(ConectaHibernateMySQL.java:16)

O que pode ser? Até o exemplo do livro da o erro.

import org.hibernate.Session;

public class ConectaHibernateMySQL {

	public static void main(String[] args) {
		Session sessao = null;
		try {
			sessao = HibernateUtil.getSessionFactory().openSession();
			System.out.println("Conectado");
		} finally

		{
			sessao.close();

		}
	}

}

Classe hibernate

import org.hibernate.SessionFactory;
import org.hibernate.boot.registry.StandardServiceRegistry;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.hibernate.cfg.Configuration;

public class HibernateUtil {

private static final SessionFactory sessionFactory = buildSessionFactory();

private static SessionFactory buildSessionFactory(){

  try{
  Configuration cfg = new Configuration();
  cfg.configure("hibernate.cfg.xml");
  StandardServiceRegistryBuilder registradorServico = new StandardServiceRegistryBuilder();
  registradorServico.applySettings(cfg.getProperties());
  StandardServiceRegistry servico= registradorServico.build();
  return cfg.buildSessionFactory(servico);
  }catch (Throwable e){
  	System.out.println("Erro aoiniciar a sessionFactory. Erro: " + e.getMessage());
  	throw new ExceptionInInitializerError(e);
  }

}

Classe hibernate.cfg.xml

  <property name="dialect">org.hibernate.dialect.MySQL5InnoDBDialect</property>
 <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
 <property name="connection.url">jdbc:mysql://localhost/agenda</property>
 <property name="connection.username">root</property>
  <property name="connection.password">123456</property>
  <property name="current_session_context_class">thread</property>

  <property name="c3po.min_size">5</property>
  <property name="c3po.max.sixe">20</property>
  <property name="c3po.timeout">300</property>
  <property name="c3po.max_statements">50</property>
  <property name="c3po.idle_test_period">3000</property>

  <property name="show_sql">true</property>
  <property name="format_sql">true</property>
  <property name="generete_statistics">true</property>
  <property name="use_sql_comments">true</property>