createEntityManager() - JPA EntityManagerFactory's method

Create a new application-managed EntityManager. This method returns a new EntityManager instance each time it is invoked. The isOpen method will return true on the returned instance.

Returns:: entity manager instance

Throws:: IllegalStateException - if the entity manager factory has been closed

Since:: JPA 1.0

^ EntityManagerFactory

This documentation page is derived (with some adjustments) from the open source JPA 2 RI (EclipseLink)
and is available under the terms of the Eclipse Public License, v. 1.0 and Eclipse Distribution License, v. 1.0.

Object Relational Mapping (ORM) JPA 2 providers include Hibernate, EclipseLink, TopLink, OpenJPA and DataNucleus.

ObjectDB is not an ORM JPA implementation but an Object Database for Java with built in JPA 2 support.