Realizing Multi-Dimensional Software Adaptation

This paper describes the use of programming language constructs to support run-time software adaptation. A prototype language, Adaptive Java, contains primitives that permit programs to modify their own operation in a principled manner. In case studies, Adaptive Java is being used to support adaptation for different crosscutting concerns associated with heterogeneous mobile computing and critical infrastructure protection. Examples are described in which Adaptive Java components support dynamic quality-ofservice on wireless networks, run-time energy management for handheld computers, and self-auditing of potential security threats in distributed environments.

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