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Naked objects is an approach to systems design in which core business objects show directly through to the user interface, and in which all interaction consists of invoking methods on those objects in the noun-verb style. One advantage of this approach is that it results in systems that are more expressive from the viewpoint of the user: they treat the user like a problem solver, not as merely a process-follower. Another advantage is that the 1:1 mapping between the user's representation and the underlying model means that it is possible to auto-generate the former from the latter, which yields benefits to the development process. The authors have designed a Java-based, open source toolkit called Naked Objects which facilitates this style of development. This paper describes the design and operation of the toolkit and its application to the prototyping of a core business system. Some initial feedback from the project is provided, together with a list of future research directions both for the toolkit and for a methodology to apply the naked objects approach.

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