Trying to use the GWT-GRAPHICS

Hello,

I am new to vaadin, am trying to add the gwt-graphics jar to my project and compile the project. When I run the project, I get run time exceptions :
Cause: java.lang.NoClassDefFoundError: org/vaadin/gwtgraphics/client/shape/Rectangle
at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:532)
at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:164)
at com.vaadin.ui.AbstractComponent.fireEvent(AbstractComponent.java:1219)
at com.vaadin.ui.AbstractLayout.fireClick(AbstractLayout.java:137)
at com.vaadin.ui.AbstractLayout.changeVariables(AbstractLayout.java:113)
at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.changeVariables(AbstractCommunicationManager.java:1445)
at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.handleVariableBurst(AbstractCommunicationManager.java:1393)
at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.handleVariables(AbstractCommunicationManager.java:1312)
at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.doHandleUidlRequest(AbstractCommunicationManager.java:763)
at com.vaadin.terminal.gwt.server.CommunicationManager.handleUidlRequest(CommunicationManager.java:296)
at com.vaadin.terminal.gwt.server.AbstractApplicationServlet.service(AbstractApplicationServlet.java:501)

I am also using Vaadin Visualisations, that works fine.
Can anyone please throw some light on what am doing wrong?

Thank you for the reply, I guess thats what is wrong too.
What else in Vaadin can I use to implement a rectangle? or any other shapes on the server side UI?

madhuri r: What else in Vaadin can I use to implement a rectangle? or any other shapes on the server side UI?

CanvasWidget provides a server side API.

Thanks a lot for you reply :) worked just fine :)