Is there any scripting library?or a way to evaluate mathimatical strings?

Question

by evaluating strings i mean things of the type
evaluate("5+3-2+sin(5)") should return some value, i know that in other languages, you will find libraries that define some scriptengine that can evaluate such strings, is this available in java aswell? 'Cause after searching i only found one for JavaScript, which is not what i'm looking for.
It doesn't even have to be a scriptengine, just some sort of way i can use to, given some sort of mathematical string (with functions like sinus,POW,...) to evaluate it, it doesn't have to be able to recognise variables in it, but it would help but i'd be happy with just some library or anything that can implement this.
Edited by: omegax on Apr 9, 2009 1:52 AM
Edited by: omegax on Apr 9, 2009 1:53 AM

Answer 1

omegax wrote:
by evaluating strings i mean things of the type
evaluate("5+3-2+sin(5)") should return some value, i know that in other languages, you will find libraries that define some scriptengine that can evaluate such strings, is this available in java aswell? 'Cause after searching i only found one for JavaScript, which is not what i'm looking for.The example you posted can be handled by the JavaScript engine shipped with Java 1.6 (although you'll have to change sin(...) to Math.sin(...)):
ScriptEngine engine = new ScriptEngineManager().getEngineByExtension("js");
System.out.println(engine.eval("Math.sin(45)"));