Exp4j

exp4j is a small Java library for evaluation of mathematical expressions. It implements Dijkstra's Shunting-yard algorithm to translate expressions from infix notation to Reverse Polish notation and calculates the result using a simple Stack algorithm.

Features

• Variables can be used in expressions
• exp4j comes with a set of common built-in functions
• Users can create and use their own custom operators
• Users can create and use their own custom functions

License terms

exp4j is released under the terms of the Apache License 2.0

Examples of usage

Calculating the result of

can be done in the following way:

See also

• mXparser - Mathematical Expressions Parser / Evaluator

References