Java 1.5: mathematical formula parser

Question

Hello i often develop JTableModels in which some cells must contain the result of apliying a certain simple mathematical formula. This formulas can have:

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Answer 1

i released an expression evaluator based on Dijkstra's Shunting Yard algorithm, under the terms of the Apache License 2.0:

http://projects.congrace.de/exp4j/index.html