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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Problem In a multitiered J2EE application environment, the following problems
arise: • Tight coupling, which leads to direct dependence between clients and
business objects; • Too many method invocations between client and server,
ships between the participating business objects as well as understand the
responsibility of transaction demarcation. As client requirements increase, the
complexity of interaction between various business objects increases. The client
Facade to manage workflow among business objects, rather than making the
business objects aware of each other. A business object should only be
responsible for its own (data and logic) management. Inter-business object
interactions can ...