HibernateUtil.java

package java_hibernate.java_hibernate;

import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;

public class HibernateUtil {

    public static EntityManagerFactory factory = null;

    static {
        init();
    }

    private static void init() {
        try {
            if(factory == null) {
                factory = Persistence.createEntityManagerFactory("java-hibernate");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static EntityManager getEntityManager() {
        return factory.createEntityManager(); /* Provê persistência*/
    }
}