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Vaadin Forum4. Other

Trying to use the GWT-GRAPHICS

Madz R
9 years ago Apr 16, 2012 4:03pm

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?

Henri Kerola
9 years ago Apr 17, 2012 7:29am

Hi,

Looks like you are trying to use GWT Graphics on the server side code. GWT Graphics is just a GWT library so you can use it only on the client side when creating a widget for Vaadin.

-Henri

+1
Madz R
9 years ago Apr 17, 2012 11:50am

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?

Henri Kerola
9 years ago Apr 17, 2012 1:36pm

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.

Last updated on Apr, 17th 2012
Madz R
9 years ago Apr 24, 2012 3:46pm

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