Pro JPA 2 pp 131-177 | Cite as

Entity Manager

  • Mike Keith
  • Merrick Schnicariol


Entities do not persist themselves when they are created. Nor do they remove themselves from the database when they are garbage-collected. It is the logic of the application that must manipulate entities to manage their persistent lifecycle. JPA provides the EntityManager interface for this purpose in order to let applications manage and search for entities in the relational database.


Department Entity Entity Manager Active Transaction Employee Instance Target Entity 
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Copyright information

© Mike Keith and Merrick Schincariol 2009

Authors and Affiliations

  • Mike Keith
  • Merrick Schnicariol

There are no affiliations available

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