Get started
Loading...
Important Notice - Forums is archived

To simplify things and help our users to be more productive, we have archived the current forum and focus our efforts on helping developers on Stack Overflow. You can post new questions on Stack Overflow or join our Discord channel.

Product icon
TUTORIAL

Vaadin lets you build secure, UX-first PWAs entirely in Java.
Free ebook & tutorial.

CssImport when using Component Exporter by Mikhail Shabarov, 4 weeks ago
Recent Posts
Vaadin Forum4. Other

Trying to use the GWT-GRAPHICS

Madz R
10 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
10 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
10 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
10 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
10 years ago Apr 24, 2012 3:46pm

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