Prompt Title: Creating CRUD Application in Java.

Sure, here's an example of a Hibernate configuration class:

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

public class HibernateConfig {
    
    private static SessionFactory sessionFactory;

    public static SessionFactory getSessionFactory() {
        if (sessionFactory == null) {
            try {
                Configuration configuration = new Configuration();

                // Configure Hibernate properties
                configuration.setProperty("hibernate.connection.driver_class", "org.h2.Driver");
                configuration.setProperty("hibernate.connection.url", "jdbc:h2:mem:test");
                configuration.setProperty("hibernate.connection.username", "sa");
                configuration.setProperty("hibernate.connection.password", "");
                configuration.setProperty("hibernate.dialect", "org.hibernate.dialect.H2Dialect");
                configuration.setProperty("hibernate.hbm2ddl.auto", "create");

                // Add entity classes
                configuration.addAnnotatedClass(Employee.class);

                ServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder()
                        .applySettings(configuration.getProperties())
                        .build();

                sessionFactory = configuration.buildSessionFactory(serviceRegistry);

            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        return sessionFactory;
    }
}

This configuration class uses the H2 database and configures Hibernate properties such as the JDBC URL, dialect, and hbm2ddl.auto mode. You can modify these properties based on your specific requirements.

Additionally, the addAnnotatedClass() method is used to specify the entity classes that should be managed by Hibernate. You can add more entity classes to this method as needed.

The getSessionFactory() method creates a SessionFactory object using the configuration properties and the entity classes. The SessionFactory object is a factory for Session instances, which are used to perform database operations. The getSessionFactory() method is a static method, so it can be accessed from anywhere in your application.