JEP 3.0.0

JEP is a Java API for parsing and evaluating mathematical expressions. With JEP library you can allow your users to enter an arbitrary formula as a string, and instantly evaluate it.
JEP supports user defined variables, constants, and functions. A number of common mathematical functions and constants are included.
Main features:
- Small size (only 75KB as jar archive)
- Supports Boolean expressions (!, &&, ||, <, >, !=, ==, >=, and <=)
- Fast evaluation (the expression can be evaluated quickly for different variable values)
- Includes common math functions
- Extendable through user defined functions
- Predefined constants such as pi and e
- Support for strings, complex numbers, and vectors
- Support for implicit multiplication (allows use of expressions such as "3x" instead of "3*x")
- Allows choice between declared and undeclared variables
- Java 1.2 compatible (cross-compiled with Sun JDK 1.2.2)
- Supports Unicode characters (including Greek symbols)
- Includes JavaCC grammar from which the main classes are generated
Enhancements:
- A faster evaluator was added.
- A configurable parser was added.
- High precision calculation using BigDecimal was implemented.
- A new component architecture is used.
- Much more was done.