HibernateUtil.java

package hibernate;

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

import java.util.Properties;

@SuppressWarnings("unused")
final class HibernateUtil {

    private static final SessionFactory SESSION_FACTORY = buildSessionFactory();

    private HibernateUtil() {
    }

    public static SessionFactory getSessionFactory() {
        return SESSION_FACTORY;
    }

    public static void shutdown() {
        getSessionFactory().close();
    }

    private static SessionFactory buildSessionFactory() {
        try {
            Configuration configuration = new Configuration().configure();
            Properties properties = configuration.getProperties();
            ServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder().applySettings(properties).build();

            return configuration.buildSessionFactory(serviceRegistry);

        } catch (Throwable ex) {
            throw new ExceptionInInitializerError(ex);
        }
    }
}