@Repeatable(value=PersistenceUnits.class) @Target(value={TYPE,METHOD,FIELD}) @Retention(value=RUNTIME) public @interface PersistenceUnit
EntityManagerFactory and its
 associated persistence unit.| Modifier and Type | Optional Element and Description | 
|---|---|
| String | name(Optional) The name by which the entity manager factory is to be accessed 
 in the environment referencing context;  not needed when 
 dependency injection is used. | 
| String | unitName(Optional) The name of the persistence unit as defined in the
  persistence.xmlfile. | 
public abstract String name
public abstract String unitName
persistence.xml file. If specified, the
 persistence unit for the entity manager factory that is
 accessible in JNDI must have the same name.Copyright © 2017. All Rights Reserved.