Core J2EE Patterns: Best Practices and Design Strategies
Over the last few years, Java 2 Platform, Enterprise Edition (J2EE) technology has emerged and matured as a standard platform for building enterprise applications. While the platform has matured into a solid offering for developing and deploying enterprise applications, it does offer its challenges. As developers, often we confuse learning the technology with learning to design with the technology. In this book, senior architects from the Sun Java Center, Sun's Java consulting organization share with the reader their cumulative design experience with and expertise on J2EE technology.
The primary focus of the book is on patterns, best practices, design strategies, and proven solutions using the key J2EE technologies including JavaServer Pages (JSP), Servlets, Enterprise Java Beans (EJB), and Java Message Service (J.M.S) API. Other ancillary technologies like JDBC and JNDI are also discussed as relevant to their usage in these patterns. The J2EE Patterns catalog with 16 patterns and numerous strategies is presented to document and promote best practices for these technologies.
In addition to the patterns and strategies, the book offers the following:
Core J2EE Patterns delivers:
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A container is a service that provides the necessary infrastructure and support for
a component to exist and for the component to provide ... A container usually
provides its services to the components as a Java compatible runtime
Hence, once a client's method invocation on a stateless session beans is
completed, the container is free to reuse that session bean instance for another
client. This allows the container to maintain a pool of session beans and to reuse
Composite Entity Client Client - o Container / intercepts entity bean calls w Entity
to dependent call is local to entity Transaction Context Transaction — Context
Motivation Entity beans have significantly more overhead than plain Java objects.