Problems executing project using jbehave in eclipse - eclipse

Question

I am completely new to jbehave and even automated testing.
I read a tutorial online and tried following the steps.
I am trying to run this application in eclipse IDE.
I made a Math.story file which contains the tests:
Scenario: 2 squared
Given a variable x with value 2
When I multiply x by 2
Then x should equal 4
In a .java file called ExampleSteps.java, the steps are written:
import org.jbehave.core.annotations.Given;
import org.jbehave.core.annotations.Named;
import org.jbehave.core.annotations.Then;
import org.jbehave.core.annotations.When;
import org.jbehave.core.steps.Steps;
public class ExampleSteps extends Steps {
int x;
#Given("a variable x with value $value")
public void givenXValue(#Named("value") int value) {
x = value;
}
#When("I multiply x by $value")
public void whenImultiplyXBy(#Named("value") int value) {
x = x * value;
}
#Then("x should equal $value")
public void thenXshouldBe(#Named("value") int value) {
if (value != x)
throw new RuntimeException("x is " + x + ", but should be " + value);
}
}
I created another class SimpleJbehave which has the main method:
import java.util.Arrays;
import java.util.List;
import org.jbehave.core.embedder.Embedder;
public class SimpleJBehave {
private static Embedder embedder = new Embedder();
private static List<String> storyPaths = Arrays
.asList("Math.story");
public static void main(String[] args) {
embedder.candidateSteps().add(new ExampleSteps());
embedder.runStoriesAsPaths(storyPaths);
}
}
When I run this code, I get the following exception:
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/collections/Transformer
at org.jbehave.core.configuration.Configuration.<init>(Configuration.java:112)
at org.jbehave.core.configuration.MostUsefulConfiguration.<init>(MostUsefulConfiguration.java:49)
at org.jbehave.core.embedder.Embedder.<init>(Embedder.java:30)
at org.jbehave.core.embedder.Embedder.<init>(Embedder.java:37)
at SimpleJBehave.<clinit>(SimpleJBehave.java:8)
Caused by: java.lang.ClassNotFoundException: org.apache.commons.collections.Transformer
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 5 more
As I am a novice, I have not been able to understand what exactly the problem is.
It will be really nice if someone could tell me what I should do to get this code working.
Is my approach wrong?
Thank you very much in advance.

Answer 1

It looks like you don't have org.apache.commons.collections.Transformer on your classpath. It looks like this class is available in the apache-commons-transformer library here: http://commons.apache.org/collections/api-release/org/apache/commons/collections/Transformer.html
Download the jar and add it to your classpath. It might work.