The following application program interfaces (APIs) are available for J2EE client applications, web servers, and EJB servers:
- JMS: The Java Message Service is the API for sending and receiving messages via enterprise messaging systems like IBM MQ Series and TIBCO Rendezvous.
- JAAS: The Java Authentication and Authorization Service is used to authenticate and authorize access controls on users.
- JAXP: The Java API for XML Parsing provides support for the industry standard SAX and DOM APIs for parsing XML documents, as well as support for XSLT transform engines.
- JDBC: The JDBC API is for accessing databases from Java using a call-level interface. More on JDBC.
- SQLJ: The SQLJ API is for accessing databases from Java using embedded SQL. More on SQLJ
- JDO: The JDO API is for accessing databases from Java using a transparent persistence interface. More on JDO.
The following APIs are not available for J2EE client applications, but are available for J2EE web servers and EJB servers:
- JTA: The Java Transactions API is the API for managing and coordinating transactions across heterogeneous systems.
- JavaMail: This is the API for sending and receiving email.
- JAF: JavaMail uses the JavaBeans Activation Framework.
- Connectors: These connect to non-J2EE systems.
More on the general topic: Application Server Definition
Author: Douglas K Barry
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The Savvy Manager's Guide
Douglas K Barry is also the author of a book that explains Web Services, service-oriented architecture, and Cloud Computing in an easy-to-understand, non-technical manner.
Web Services, Service-Oriented Architectures, and Cloud Computing: The Savvy Manager's Guide (Second Edition)
by Douglas K Barry with David Dick
This is a guide for the savvy manager who wants to capitalize on the wave of change that is occurring with Web Services, service-oriented architecture, and—more recently—Cloud Computing. The changes wrought by these technologies will require both a basic grasp of the technologies and an effective way to deal with how these changes will affect the people who build and use the systems in our organizations. This book covers both issues. Managers at all levels of all organizations must be aware of both the changes that we are now seeing and ways to deal with issues created by those changes.