smithers.calculator
Class Calculator

java.lang.Object
  smithers.calculator.Calculator

public class Calculator
extends java.lang.Object

A calculator.

Constructor Summary

Calculator()

Method Summary

static void	main(java.lang.String[] args) Runs the calculator program.
java.lang.String	parse(java.lang.String input) Parses the given expression.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Calculator

public Calculator()

Method Detail

parse

public java.lang.String parse(java.lang.String input)

Parses the given expression.

Parameters:

input - the expression to evaluate

Returns:

the result of the evaluation

main

public static void main(java.lang.String[] args)
                 throws java.lang.Exception

Runs the calculator program. If arguments are given, they are each evaluated in turn. Otherwise the program reads expressions from standard input until a blank line is read.

Parameters:

args - the arguments, if any

Throws:

java.lang.Exception