| After becoming highly addicted to Lisp macros and finding Dylan's macro system (in regards to languages with algebraic syntax) extremely interesting, I found this sourceforge project started by Jonathan Bachrach (author of GOO). Below is a link to the project page, http://jse.sourceforge.net and a link to the original paper by Jonathan Bachrach and Keith Playford (of Functional Objects, Inc.) http://www.ai.mit.edu/~jrb/jse/jse.pdf 
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Java Syntactic Extender