Applying Code Generation Techniques to the J2EE Development

Some samples chapter which discusses the different approaches to code generation and looks at best practices for applying code generation techniques to the development of enterprise software for the J2EE platform. From the Book  Rapid J2EE™ Development: An Adaptive Foundation for Enterprise Applications (Prentice Hall PTR)
Code generation methods offer a means of delivering enterprise solutions extremely rapidly by reducing the mundane, repetitive tasks developers face.
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Eclipse Modeling Framework (EMF) 

EMF is a modeling framework and code generation facility for building tools and other applications based on a structured data model. From a model specification described in XMI, EMF provides tools and runtime support to produce a set of #Java classes for the model, a set of adapter classes that enable viewing and command-based editing of the model, and a basic editor. Models can be specified using annotated #Java, XML documents, or modeling tools like Rational Rose, then imported into EMF. Most important of all, EMF provides the foundation for interoperability with other EMF-based tools and applications.