JfreeChart class Not found Exception

Hello
I am creating a chart using JFreeChart in vaadin and included all the jar files like jfreechartwrapper.jar,jfreechart.jar and jcommon,jar. While writing code the application doesnot shows any error but while running it is throwing ClassNotFoundException. I am using glassfish and eclipse for cretaing the project. Any help???.

Here is my code for generating graph:
List locationList = sps.getLocations();
locationDataset=new String[locationList.size()]
;
statusDataset=new String[locationList.size()]
;
Iterator locationIterator = locationList
.iterator();

				while (locationIterator.hasNext()) {
				Location locs=locationIterator.next();
				locationDataset[i]

=locs.getName();
statusDataset[i]
=locs.getStatus();
i++;

			}
			}
			DefaultCategoryDataset dataset=new DefaultCategoryDataset();
			for(int j=0;j<=i;j++){
				dataset.addValue(j,locationDataset[j]

, statusDataset[j]
);
}
JFreeChart chart=ChartFactory.createBarChart(“Salesperson Report”, “Location”, “Status”, dataset, PlotOrientation.VERTICAL, false, true, false);

My StackTracke:

aused by: java.lang.NoClassDefFoundError: org/jfree/data/category/CategoryDataset
at forms.AdminReport$8.buttonClick(AdminReport.java:424)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:512)
… 35 more
Caused by: java.lang.ClassNotFoundException: org.jfree.data.category.CategoryDataset
at org.glassfish.web.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1509)
at org.glassfish.web.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1359)
… 41 more

Hi all,
I have exactly the same problem getting this message:
java.lang.NoClassDefFoundError: org/jfree/data/category/CategoryDataset

, altough I added also
batik-awt-util.jar
batik-svggen.jar
batik-util.jar
batik-xml.jar

If anyone has an idea what to do, just let “us” know, would be awesome!

Greets from Germany,

Fiete