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From Eamon Doyle <>
Subject [math] Having trouble using any Math functions
Date Thu, 10 Feb 2011 16:10:10 GMT
Hi all.  I am new to Math (and including non-standard classes that aren't
created by my own code for that matter) and I am having trouble calling
DescriptiveStatistics.  Having searched for a solution for 3 days and having
asked a number of friends, this is the logical next step.  When I try to run
my program, I get two “cannot find symbol class DescriptiveStatistics”
errors on the line that constructs the todaysDocsStats object.  If anyone
has insight as to what I’m doing wrong here, I would really appreciate the

Here are the relevant bits:

The path to commons-math-2.1.jar is in my classpath.  If I remove it, then I
also get the error “package org.apache.commons.math does not exist”

Some code:

import java.util.*;

import org.apache.commons.math.*;

public class CalcTAT {

                public Date startProcessingTime;

                public Date endProcessingTime;

                public Date currentTime;

                public CalcTAT(Date startTimeHold, Date endTimeHold)


                                startProcessingTime = startTimeHold;

                                endProcessingTime = endTimeHold;


    public ArrayList findTAT( ArrayList docRes )


**stuff removed**

                                DescriptiveStatistics todaysDocsStats = new

                                while(conditions )








Thanks for any help you can provide.


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