public TableeJpaController(EntityManagerFactory emf){
...
}

Tablee t = new Tablee(1,"marwen");
//la suite ??

@PersistenceContext(unitName="BankService")
private EntityManager em;

EntityManagerFactory emf = Persistence.createEntityManagerFactory("BankService"); //null
EntityManager em = emf.createEntityManager();

Citation : angelsafrania

L'entityManager peut être injecter par le conteneur EJB de ton serveur. (Si c'est un EJB bien sûr).

@PersistenceContext(unitName="BankService")
private EntityManager em;

Si tu fait du lourd tu devras le faire toi même (peut être avec un peu d'aide de spring) !

EntityManagerFactory emf = Persistence.createEntityManagerFactory("BankService"); //null
EntityManager em = emf.createEntityManager();

Il faut bien sûr que "BankService" soit déclaré au niveau de ton persistance.xml

public class Test {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws PreexistingEntityException, Exception {
        // TODO code application logic here
        EntityManagerFactory emf = Persistence.createEntityManagerFactory("testPU");
        Tablee t=new Tablee(5,"marwen");
        TableeJpaController tjc=new TableeJpaController(emf);
       
            tjc.create(t);
            System.out.println("succeed! l'objet est inséré");
            
       
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
  <persistence-unit name="testPU" transaction-type="RESOURCE_LOCAL">
    <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
    <class>test.Tablee</class>
    <properties>
      <property name="javax.persistence.jdbc.url" value="jdbc:derby://localhost:1527/xxx"/>
      <property name="javax.persistence.jdbc.password" value=""/>
      <property name="javax.persistence.jdbc.driver" value="org.apache.derby.jdbc.ClientDriver"/>
      <property name="javax.persistence.jdbc.user" value="root"/>
      <property name="eclipselink.ddl-generation" value="drop-and-create-tables"/>
    </properties>
  </persistence-unit>
</persistence>

Citation : marwen109

Exception Description: Configuration error. Class [org.apache.derby.jdbc.ClientDriver] not found.

Citation : marwen109

<property name="javax.persistence.jdbc.driver" value="org.apache.derby.jdbc.ClientDriver"/>

package testt;

import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;
import testt.exceptions.PreexistingEntityException;

/**
 *
 * @author marwen
 */
public class Testt {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws PreexistingEntityException, Exception {
        
        
        EntityManagerFactory emf = Persistence.createEntityManagerFactory("testtPU");
        Personne p=new Personne(2);
        p.setNom("marwen");
        PersonneJpaController tjc=new PersonneJpaController(emf);
       
            tjc.create(p);
           
            System.out.println("succeed! l'objet est inséré");
    }
}

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package testt;

import java.io.Serializable;
import javax.persistence.*;
import javax.xml.bind.annotation.XmlRootElement;

/**
 *
 * @author marwen
 */
@Entity
@Table(name = "PERSONNE", catalog = "", schema = "ROOT")
@XmlRootElement
@NamedQueries({
    @NamedQuery(name = "Personne.findAll", query = "SELECT p FROM Personne p"),
    @NamedQuery(name = "Personne.findById", query = "SELECT p FROM Personne p WHERE p.id = :id"),
    @NamedQuery(name = "Personne.findByNom", query = "SELECT p FROM Personne p WHERE p.nom = :nom")})
public class Personne implements Serializable {
    private static final long serialVersionUID = 1L;
    @Id
    @Basic(optional = false)
    @Column(name = "ID", nullable = false)
    private Integer id;
    @Column(name = "NOM", length = 30)
    private String nom;

    public Personne() {
    }

    public Personne(Integer id) {
        this.id = id;
    }

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getNom() {
        return nom;
    }

    public void setNom(String nom) {
        this.nom = nom;
    }

    @Override
    public int hashCode() {
        int hash = 0;
        hash += (id != null ? id.hashCode() : 0);
        return hash;
    }

    @Override
    public boolean equals(Object object) {
        // TODO: Warning - this method won't work in the case the id fields are not set
        if (!(object instanceof Personne)) {
            return false;
        }
        Personne other = (Personne) object;
        if ((this.id == null && other.id != null) || (this.id != null && !this.id.equals(other.id))) {
            return false;
        }
        return true;
    }

    @Override
    public String toString() {
        return "testt.Personne[ id=" + id + " ]";
    }
    
}

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package testt;

import java.io.Serializable;
import java.util.List;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Query;
import javax.persistence.EntityNotFoundException;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Root;
import testt.exceptions.NonexistentEntityException;
import testt.exceptions.PreexistingEntityException;

/**
 *
 * @author marwen
 */
public class PersonneJpaController implements Serializable {

    public PersonneJpaController(EntityManagerFactory emf) {
        this.emf = emf;
    }
    private EntityManagerFactory emf = null;

    public EntityManager getEntityManager() {
        return emf.createEntityManager();
    }

    public void create(Personne personne) throws PreexistingEntityException, Exception {
        EntityManager em = null;
        try {
            em = getEntityManager();
            em.getTransaction().begin();
            em.persist(personne);
            em.getTransaction().commit();
        } catch (Exception ex) {
            if (findPersonne(personne.getId()) != null) {
                throw new PreexistingEntityException("Personne " + personne + " already exists.", ex);
            }
            throw ex;
        } finally {
            if (em != null) {
                em.close();
            }
        }
    }

    public void edit(Personne personne) throws NonexistentEntityException, Exception {
        EntityManager em = null;
        try {
            em = getEntityManager();
            em.getTransaction().begin();
            personne = em.merge(personne);
            em.getTransaction().commit();
        } catch (Exception ex) {
            String msg = ex.getLocalizedMessage();
            if (msg == null || msg.length() == 0) {
                Integer id = personne.getId();
                if (findPersonne(id) == null) {
                    throw new NonexistentEntityException("The personne with id " + id + " no longer exists.");
                }
            }
            throw ex;
        } finally {
            if (em != null) {
                em.close();
            }
        }
    }

    public void destroy(Integer id) throws NonexistentEntityException {
        EntityManager em = null;
        try {
            em = getEntityManager();
            em.getTransaction().begin();
            Personne personne;
            try {
                personne = em.getReference(Personne.class, id);
                personne.getId();
            } catch (EntityNotFoundException enfe) {
                throw new NonexistentEntityException("The personne with id " + id + " no longer exists.", enfe);
            }
            em.remove(personne);
            em.getTransaction().commit();
        } finally {
            if (em != null) {
                em.close();
            }
        }
    }

    public List<Personne> findPersonneEntities() {
        return findPersonneEntities(true, -1, -1);
    }

    public List<Personne> findPersonneEntities(int maxResults, int firstResult) {
        return findPersonneEntities(false, maxResults, firstResult);
    }

    private List<Personne> findPersonneEntities(boolean all, int maxResults, int firstResult) {
        EntityManager em = getEntityManager();
        try {
            CriteriaQuery cq = em.getCriteriaBuilder().createQuery();
            cq.select(cq.from(Personne.class));
            Query q = em.createQuery(cq);
            if (!all) {
                q.setMaxResults(maxResults);
                q.setFirstResult(firstResult);
            }
            return q.getResultList();
        } finally {
            em.close();
        }
    }

    public Personne findPersonne(Integer id) {
        EntityManager em = getEntityManager();
        try {
            return em.find(Personne.class, id);
        } finally {
            em.close();
        }
    }

    public int getPersonneCount() {
        EntityManager em = getEntityManager();
        try {
            CriteriaQuery cq = em.getCriteriaBuilder().createQuery();
            Root<Personne> rt = cq.from(Personne.class);
            cq.select(em.getCriteriaBuilder().count(rt));
            Query q = em.createQuery(cq);
            return ((Long) q.getSingleResult()).intValue();
        } finally {
            em.close();
        }
    }
    
}

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
  <persistence-unit name="testtPU" transaction-type="RESOURCE_LOCAL">
    <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
    <class>testt.Personne</class>
    <properties>
      <property name="javax.persistence.jdbc.url" value="jdbc:derby://localhost:1527/personne"/>
      <property name="javax.persistence.jdbc.password" value="1234"/>
      <property name="javax.persistence.jdbc.driver" value="org.apache.derby.jdbc.ClientDriver"/>
      <property name="javax.persistence.jdbc.user" value="root"/>
      <property name="eclipselink.ddl-generation" value="drop-and-create-tables"/>
    </properties>
  </persistence-unit>
</persistence>

Citation : marwen109

<property name="eclipselink.ddl-generation" value="drop-and-create-tables"/>

java -jar jarre.jar