Not Resolving the classpath to a file

[vin_eets]

I am using jChats(jCharts-0.7.5.jar) application with its included example for PieChart

If I provide the claspath to the jar file of charts ,it doesnt work,it gives me error that it is not finding particular class(in this case it is IPieChartDataSet)

But if I extract the jar file and place the "org" folder in the current directory,it works absolutely fine

It is also working fine with the Eclipse IDE

Can anyone tell me what is the problem