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

import org.hibernate.Session;


public class Test01 {
	public static void main(String[] args) {
		EntityManagerFactory entityManagerFactory = Persistence
				.createEntityManagerFactory("HBM");

		EntityManager entityManager = entityManagerFactory.createEntityManager();
		entityManager.getTransaction().begin();

		long ID = 1L;
		
		SomeEntity en = new SomeEntity();
		en.setId(ID);
		en.setName("Name");
		entityManager.persist(en);
		
		entityManager.flush();
		entityManager.clear();
		
		Session session = entityManager.unwrap(Session.class);
		SomeEntity en2 = session.get(SomeEntity.class, ID);
	
		System.out.println(en2);
		session.detach(en2);
		session.delete(en2);
		
		entityManager.getTransaction().commit();
		entityManager.close();
		entityManagerFactory.close();
	}
}

@Entity
class SomeEntity {
	
	@Id
	private long id;
	private String name;
	
	public long getId() {
		return id;
	}
	public void setId(long id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	@Override
	public String toString() {
		return "SomeEntity [id=" + id + ", name=" + name + "]";
	}

}