public List<Client> getClients()
{
List<Client> clist = new ArrayList<Client>();
entityManager =entityManagerFactory.createEntityManager();
    try
{
  clist = entityManager.createQuery("from Client").getResultList();
  return clist;
    }
catch (Exception e)
{
    }
    finally
    {
       entityManager.close()
    }
}

@PersistenceContext
private EntityManager entityManager;

public List<Client> getClients()
{
List<Client> clist = new ArrayList<Client>();
    try
    {
        clist = entityManager.createQuery("from
Client").getResultList();
        return clist;
    }
    catch (Exception e)
    {
        LOGGER.error(e.getMessage());
        LOGGER.error(e.getStackTrace());

        return clist;
    }
}

@Transactional
public void addNotification(Notifications noti)
{

    try
    {
        getEntityManager().getTransaction().begin();
        getEntityManager().persist(noti);
        getEntityManager().getTransaction().commit();

        // getEntityManager().persist(noti);
    }
    catch (Exception e)
    {
        LOGGER.error(e.getMessage());
        LOGGER.error(e.getStackTrace());
    }
    finally
    {

    }
}