Package jwo.utils.expression

Utility classes for the processing of mathematical expression.

See:
Description

Class Summary

MathEvaluator	Evaluates a mathematical expression stored in an postfix stack (created using MathParser).
MathOperator	Stores an enumerated list of operators that may be parsed by the MathParser.
MathParser	Converts a mathematical expression (using 'normal' infix ordering) into a postfixed stack.
MathToken	Stores an enumerated list of tokens that may be parsed by the MathParser.
Token	A simple token for storing a type, value pair.
Tokenizer	A tokenizer that uses regular expressions to parse text.

Exception Summary

ParseException	Exception for reporting problems with expression parsing.
TokenNotFoundException	Exception for reporting missing tokens.

Package jwo.utils.expression Description

Utility classes for the processing of mathematical expression. This code is modification of original code described at www.devx.com/premier/mgznarch/javapro/2001/05may01/ps0105/ps0105.asp by Daniel Savarese. Modifications allow unary operators (e.g. sin(), cos(), tan()) and variable substitutions (x,y,z0,z1) to be handled.