|Kelly, S. (2005) The application of architectural and design patterns in enterprise systems. MSc, Institute of Technology, Sligo.
|MSc (Partial Fulfillment)
|This thesis investigates the use of various J2EE technologies and the application o f best
practice in the use of these technologies. It uses the knowledge gained in this investigation
to develop a demonstration application designed for use in the teaching o f these
technologies. The demonstration application is designed to lead students from the
development o f standalone components to the development and integration of composite
components in a complete working application. The learning experience is enhanced as
students must identify design faults at various stages of development, and attempt
solutions, before being introduced to design patterns that resolve the faults. In this way
students get a real appreciation o f the benefits o f the patterns. Various exercises are
identified throughout the thesis to re-inforce the learning.
Java 2 Enterprise Edition (J2EE) is a specification from Sun Microsystems for developing
multi-tiered distributed applications. J2EE covers a wide range of technologies that are
applied across various tiers in an n-tiered architecture. Learning to use these various
technologies is not a trivial task and there is a strong demand for experienced J2EE
“J2EE requires significant knowledge and is not for the faint-hearted. Enterprise
platforms are inherently complex, slowing down advanced Java developers and creating a
barrier to entry for many mainstream developers. There is a critical shortage of advanced
Java developers, and especially Java developers with expertise in Enterprise Java Beans
(ETBs)".  John Crupi, Distinguished Engineer, Chief Java Architect, Sun Microsystems,
Frank Baerveldt, Director o f Software Architecture, Compuware Corporation.
“Implementing Sun Microsystems’ Core J2EE Patterns”, 2005
However, learning to use the various J2EE technologies is no guarantee that these
technologies will be used to apply good design practice. By applying architectural and
design patterns, developers learn from the experiences of experts.
“Learning to design comes from experience and from sharing knowledge on best practices
and bad practices".  Deepak Alur, John Crupi and Dan Malks.
Core J2EE Patterns (Best Practices and Design Strategies) 2nd Edition (Prentice Hall,
|Java (Computer program language)
|Enterprise application integration (Computer systems)
|The application of architectural and design patterns in enterprise systems
|M. Sc. in Computing
|Institute of Technology, Sligo
|Creative Commons Attribution-NonCommercial-NoDerivs CC BY-NC-ND
|Computing and Creative Practices ITS