We show how a collection of object-oriented concepts can be directly expressed in predicative programming. We demonstrate how these features can be used in cooperation with the existing refinement, real-time, and concurrency features of predicative programming in several examples, thus providing a simple integration of object-orientation, real-time, and concurrency.

An updated and corrected version of this report will appear in Proceedings of the World Congress on Formal Methods (FM'99), Toulouse, France, September 1999.

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