Don Schwarz continues his series on Java attribute-oriented programming with
"In the previous article in this series, "Peeking Inside the Box, Part 1," I introduced the concepts of Attribute-Oriented Programming, Java 1.5 annotations, and bytecode instrumentation. I used these concepts to provide a JStatusBar GUI component that reports on the progress of an application without any explicit code. In this article I will introduce a completely different implementation of the same JStatusBar that uses thread sampling rather than bytecode instrumentation. I will then combine the two practices to develop a solution that has the best features of each.
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