Meu Java Apresenta um erro na comunicação com o Mysql

Arquivo cfg.xml

<?xml version="1.0" encoding="UTF-8"?>
<!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">com.mysql.jdbc.Driver</property>
        <property name="hibernate.connection.password">12345</property>
        <property name="connection.url">jdbc:mysql://localhost:3306/vendaspecas</property>
        <property name="hibernate.connection.username">root</property>
        <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
        <property name="hibernate.show_sql">true</property>
        <property name="hibernate.format_sql">false</property>
        <property name="hbm2ddl.auto">update</property>

        <!-- Livro -->
        <mapping class="br.com.VendasPecas.domain.Fornecedor" />
        <mapping class="br.com.VendasPecas.domain.Funcionario" />
        <mapping class="br.com.VendasPecas.domain.Produto" />

    </session-factory>
</hibernate-configuration>

Classe HibernateUtil

package br.com.VendasPecas.util;

import org.hibernate.SessionFactory; import org.hibernate.boot.registry.StandardServiceRegistryBuilder; import org.hibernate.cfg.Configuration; import org.hibernate.service.ServiceRegistry;

public class HibernateUtil {

private static final SessionFactory sessionFactory = buildSessionFactory();

private static SessionFactory buildSessionFactory() {
    try {
        // Cria uma conexão a partir do hibernate.cfg.xml

        Configuration configuration = new Configuration();
        configuration.configure();

        ServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder()
                .applySettings(configuration.getProperties()).build();


        SessionFactory sessionFactory = configuration.buildSessionFactory(serviceRegistry);

        return sessionFactory;


        //return new Configuration().configure().buildSessionFactory(
          //  new StandardServiceRegistryBuilder().build() );
    }
    catch (Throwable ex) {
        // Mensagem de erro ao conectar
        System.err.println("Erro na conexão." + ex);
        throw new ExceptionInInitializerError(ex);
    }
}

public static SessionFactory getSessionFactory() {
    return sessionFactory;
}

}

Classe GerarTabelas

package br.com.VendasPecas.main;

import br.com.VendasPecas.util.HibernateUtil;

public class GerarTabela {

public static void main(String[] args) {

    HibernateUtil.getSessionFactory();
    HibernateUtil.getSessionFactory().close();

}

}

Erro na saida (console)

Erro na conexão.org.hibernate.exception.JDBCConnectionException: Error calling Driver#connect Exception in thread "main" java.lang.ExceptionInInitializerError at br.com.VendasPecas.util.HibernateUtil.buildSessionFactory(HibernateUtil.java:34) at br.com.VendasPecas.util.HibernateUtil.(HibernateUtil.java:10) at br.com.VendasPecas.main.GerarTabela.main(GerarTabela.java:9) Caused by: org.hibernate.exception.JDBCConnectionException: Error calling Driver#connect at org.hibernate.exception.internal.SQLStateConversionDelegate.convert(SQLStateConversionDelegate.java:132)