Abstract
The Java language provides many benefits to application developers, including memory access safety, platform portability, and very high levels of productivity. However, some of the very Java language features that bring these benefits, such as the garbage collector, have also made it difficult or impossible to create applications with bounded response time characteristics. Implementations of the real-time specification for Java (RTSJ) are now available that have proven to be capable of supporting all aspects of real-time systems. This paper discusses the principal concepts underlying the RTSJ, use of the RTSJ's features in real-time applications, the most critical considerations that must be addressed by RTSJ-compliant Java virtual machine implementers, and two example RTSJ-compliant application designs that can fully utilize the RTSJ to portably support their performance requirements.
Published Version
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