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A way to resolve Math expressions as String in java.
To use is very simple.
Expression exp = new Expression("(15+5)*8+(5-6/(5+5))"); double result = exp.resolve();
And to make easier to parse string after instantiate the class you can set variables like:
Expression exp = new Expression("(x+x+x)*5"); exp.setVariable("x", 3); double result = exp.resolve();
But, expressions can be more powerfull than it. In the new Expression class is possible to use functions like the ones of the Math class, and these are:
cos, sin, tan, acos, asin, atan, sqrt, sqr, log, exp, floor, ceil, abs e neg
To use, write on your expressions with functionName(value).
And theres a special function 'rnd' wich returns a random number, and can be used inside the expressions.
Eg. rnd(42), returns a value between 0 and 41.99