Java Programming

This is in regards to this thread: [ Splitting up a mathematical expression |http://forums.sun.com/thread.jspa?threadID=5358447]

and this expression:

String expression = "(5.33+13)*Sin(6)/pow(2.0,3)";

is there a way to whip up a regex statement that would split all the tokens nice and neatly via String#split(regex)? I tried creating one of my own, but I'm woefully inept at regex and it split things but also swallowed the paren, math symbols, etc...

My poor attempt:

public class MathExpression
{
  public static void main(String[] args)
  {
    String expression = "(5.33+13)*Sin(6)/pow(2.0,3)";
    String regex = "[\\+,\\-,\\*,/\\(,\\)\\,]"; // not good!
    String[] tokens = expression.split(regex);
    for (String string : tokens)
    {
      System.out.println(string);
    }
  }
}

thanks

Edit: or if attempting to solve this in this way is misuse of a tool and shouldn't be done -- that's a valid answer too. Again thanks.

Edited by: Encephalopathic on Jan 4, 2009 7:20 AM