Java Math(s) Parsing API

Question

Following on from my previous question, I was wondering if anyone knew of any free (as in beer, as in freedom would be nice but not essential) math(s) parsing libraries for Java. I found one called Jep which used to be open-source (ie: written by the community), but now costs $300 upwards (is this even legal?).

Any help appreciated!

Answer 1

I may just be daft but isn’t the old, GPL’ed Jep still available as open source?

Answer 2

You can try the math expression parser from my Symja project.

Answer 3

You may find my math expression evaluator useful; it's completely free and it's tiny.