Exception in thread "main" javax.persistence.PersistenceException: Unable to build entity manager factory
    at org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory(HibernatePersistenceProvider.java:81)
    at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:54)
    at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:55)
    at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:39)
    at com.carrito.dao.implement.singleton.EntityManagerSingleton.getInstanceEntityManager(EntityManagerSingleton.java:23)
    at com.carrito.controller.interfaces.implement.PublicadorDAOImpl.<init>(PublicadorDAOImpl.java:16)
    at com.carrito.servlet.controller.usuario.Prueba.main(Prueba.java:36)
Caused by: org.hibernate.engine.jndi.JndiException: Error parsing JNDI name [jdbc:mysql://localhost:3306/carritodb?l [root on Default schema]]
    at org.hibernate.engine.jndi.internal.JndiServiceImpl.parseName(JndiServiceImpl.java:141)
    at org.hibernate.engine.jndi.internal.JndiServiceImpl.locate(JndiServiceImpl.java:112)
    at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.configure(DatasourceConnectionProviderImpl.java:115)
    at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:89)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:206)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:178)
    at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.buildJdbcConnectionAccess(JdbcServicesImpl.java:260)
    at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:94)
    at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:89)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:206)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:178)
    at org.hibernate.cfg.Configuration.buildTypeRegistrations(Configuration.java:1885)
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1843)
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4.perform(EntityManagerFactoryBuilderImpl.java:850)
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4.perform(EntityManagerFactoryBuilderImpl.java:843)
    at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.withTccl(ClassLoaderServiceImpl.java:399)
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:842)
    at org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory(HibernatePersistenceProvider.java:73)
    ... 6 more
Caused by: javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file:  java.naming.factory.initial
    at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:662)
    at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:313)
    at javax.naming.InitialContext.getURLOrDefaultInitCtx(InitialContext.java:350)
    at javax.naming.InitialContext.getNameParser(InitialContext.java:505)
    at org.hibernate.engine.jndi.internal.JndiServiceImpl.parseName(JndiServiceImpl.java:135)
    ... 23 more

package com.carrito.servlet.controller.usuario;

import com.carrito.controller.interfaces.implement.PublicadorDAOImpl;
import com.carrito.model.Publicador;
import java.util.Date;

/**
 *
 * @author david
 */
public class Prueba {

    public static void main(String[] args) {
        Date fecha = new Date("12/09/2016");
        Publicador pub = new Publicador(), pub2 = new Publicador(), pub3 = new Publicador();

//        pub.setNombrePublicador("Mariano");
//        pub.setApellidoPublicador("Rodríguez");
//        pub.setUbicacionCarrito("Piedra blanca");
//        pub.setFechaPublicador(fecha);
//
//        pub2.setNombrePublicador("Raymond");
//        pub2.setApellidoPublicador("Pozo");
//        pub2.setUbicacionCarrito("Parte atrás");
//        pub2.setFechaPublicador(fecha);

        pub3.setNombrePublicador("Maria");
        pub3.setApellidoPublicador("César");
//        pub3.setUbicacionCarrito("Las Espinas, Espaillat");

        PublicadorDAOImpl pubImp = new PublicadorDAOImpl();
        pubImp.guardar(pub3);


    }
}