I am using the following code in a method that catches and throws=20
org.apache.commons.math.MathException.
=20
NormalDistributionImpl normal =3D new NormalDistributionImpl();
double invNorm =3D normal.inverseCumulativeProbability(itemDifficulty);
=20
I import the class using
=20
import org.apache.commons.math.MathException;
=20
but when I compile and run my code I get this error message=20
java.lang.NoClassDefFoundError: org/apache/commons/math/MathException
=20
Any ideas what is happening? With my import statement, it seems like I
=20
should not be getting this error.
Do you have the commons-math jar in your classpath at runtime ?
Luc
I am using Netbeans and I have added the commons-math jar as a library. Is that
the same thing?
The following simple test case works fine, but the complete application produce
the error.
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();
}
}
}
