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The Query API in JPA (EJB 3.0)

Introduction One of the disadvantage of locating the entity objects using the EntityManager.find() and EntityManager.getReference() methods is, we cannot specify any powerful …

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EJB 3.0 Timer Services

Starting from EJB 2.1, Timer Services are available for building J2EE Applications that depends on time based services. Time based services are …

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