java-tutorials/hibernate5/src/main/java/com/baeldung/hibernate/HibernateUtil.java

package com.baeldung.hibernate;

import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;

public class HibernateUtil {

    private static final SessionFactory sessionFactory;

    static {
        try {
            Configuration configuration = new Configuration().configure();
            sessionFactory = configuration.buildSessionFactory();

        } catch (Throwable ex) {
            System.err.println("Initial SessionFactory creation failed." + ex);
            throw new ExceptionInInitializerError(ex);
        }
    }

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