Hibernate configuration file for Postgresql 9.4 or later

HibernateUtil.java

public class HibernateUtil {

    private static StandardServiceRegistry standardServiceRegistry;
    private static SessionFactory sessionFactory;

    static {
        StandardServiceRegistryBuilder registryBuilder = new StandardServiceRegistryBuilder();

        Map<String, String> dbSettings = new HashMap<>();
        dbSettings.put(Environment.URL, "jdbc:postgresql://localhost/dbname");
        dbSettings.put(Environment.USER, "user");
        dbSettings.put(Environment.PASS, "pass");
        dbSettings.put(Environment.DRIVER, "org.postgresql.Driver");
        dbSettings.put(Environment.DIALECT, "org.hibernate.dialect.PostgreSQL82Dialect");

        registryBuilder.applySettings(dbSettings);
        standardServiceRegistry = registryBuilder.build();
        MetadataSources sources = new MetadataSources(standardServiceRegistry);
        Metadata metadata = sources.getMetadataBuilder().build();
        sessionFactory = metadata.getSessionFactoryBuilder().build();
    }

    public static SessionFactory getSessionFactory() {
        return sessionFactory;
    }
}

Main.java

public class Main {
    public static void main(String[] args) {
        try(Session session = HibernateUtil.getSessionFactory().openSession()){
            String sql = "SELECT VERSION();";

            String result = (String) session.createNativeQuery(sql).getSingleResult();

            System.out.println("Postgres version is: ");
            System.out.println(result);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}