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Oracle WebLogic Server 12c: First Look by Michel Schildmeijer

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Major Java EE 6 API changes

Every Java EE 6 API has been changed, enhanced, or some minor updates have taken place. The focus of this version was put on WebTier. For this purpose there is a Web 2.0 profile with some of the interfaces to make it able to use the lightweight features. The use of profiles with specific subsets of Java EE APIs are intended for specific types of applications.

Each profile is fully integrated and just works out of the box, although integrating add-ons is still possible. With profiles one can create modular, lightweight Java EE compliant application servers a lot easier. In this release, there's only one profile, the Web Profile (except from the full profile where you get all the APIs that belong to the full profile.) ...

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