HibernateUtil.java

public class HibernateUtil {
    private static SessionFactory sessionFactory;
    public static SessionFactory getSessionFactory() {
        if (sessionFactory == null) {
            try {
                Configuration configuration = new Configuration();
                Properties properties = new Properties();
                properties.put(Environment.DRIVER, "com.mysql.cj.jdbc.Driver");
                properties.put(Environment.URL, "jdbc:mysql://localhost:3306/medium?useSSL=false");
                properties.put(Environment.USER, "root");
                properties.put(Environment.PASS, "");
                properties.put(Environment.DIALECT, "org.hibernate.dialect.MySQL5Dialect");
                properties.put(Environment.SHOW_SQL, "true");
                properties.put(Environment.CURRENT_SESSION_CONTEXT_CLASS, "thread");
                properties.put(Environment.HBM2DDL_AUTO, "create-drop");
                configuration.setProperties(properties);

                configuration.addAnnotatedClass(Car.class);
                ServiceRegistry registry = new StandardServiceRegistryBuilder()
                        .applySettings(configuration.getProperties())
                        .build();
                sessionFactory = configuration.buildSessionFactory(registry);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        return sessionFactory;
    }
}