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RE: [math] NormalDistributionImpl and NoClassDefFoundError: MathException

by Mike Baranski-2 :: Rate this Message:

If it compiles but does not run, make sure the compile classpath and runtime
classpath are the same.

I have no idea how netbeans determines this, because I use emacs, but that's
where I'd start.

M.

-----Original Message-----
From: Luc Maisonobe [mailto:Luc.Maisonobe@...]
Sent: Thursday, June 11, 2009 2:42 PM
To: Commons Users List
Subject: Re: [math] NormalDistributionImpl and NoClassDefFoundError:
MathException

Patrick Meyer a écrit :
> I am using Netbeans and I have added the commons-math jar as a library.
> Is that the same thing?

I have not used Netbeans in years, but I suppose this is correct.

> The following simple test case works fine, but the complete application
> produce the error.

Does the compilation performs completely without warning nor errors ?
You could perhaps check the output manually by exploring the directory
where Netbeans puts its classes (perhaps some directory with a name like
bin or target or classes).

Luc

>
> package test;
>
> import org.apache.commons.math.MathException;
> import org.apache.commons.math.distribution.NormalDistributionImpl;
>
>
> /**
> *
> * @author meyerjp
> */
> public class Main {
>
>
>
> /**
> * @param args the command line arguments
> */
> public static void main(String[] args) {
>
> NormalDistributionImpl normal = new

NormalDistributionImpl(0.0,1.0);

> try{
> double invNorm = normal.inverseCumulativeProbability(0.4);
> System.out.println(invNorm);
> }catch(MathException ex){
> ex.printStackTrace();
> }
>
>
> }
>
> }
>
>
>
>
>
> First of all, could put a [math] marker in the subject line when posting
> to this list ? It
> is shared among all commons components and this policy helps people
> setting up filters.
>
> ----- "Patrick Meyer" <meyerjp@...> a écrit :
>
>> I am using the following code in a method that catches and throws
>> org.apache.commons.math.MathException.
>>
>> NormalDistributionImpl normal = new NormalDistributionImpl();
>> double invNorm = normal.inverseCumulativeProbability(itemDifficulty);
>>
>> I import the class using
>>
>> import org.apache.commons.math.MathException;
>>
>> but when I compile and run my code I get this error message
>> java.lang.NoClassDefFoundError: org/apache/commons/math/MathException
>>
>> Any ideas what is happening? With my import statement, it seems like I
>>
>> should not be getting this error.
>
> Do you have the commons-math jar in your classpath at runtime ?
>
> Luc
>
>
>

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« Return to Thread: NormalDistributionImpl and NoClassDefFoundError: MathException