New person having difficulty with V10

Flow
1

I’ve just started with Vaadin today. I’m using V10 and Eclipse on Windows.
I’m simply trying to get through the tutorial to build the customer management system.
I downloaded the project base for V10 and built the base. When I try it at localhost, the web page returned is:

  • HTTP ERROR 500
  • Problem accessing /. Reason:
  • Server Error
  • Caused by:
  • java.lang.Error: Unresolved compilation problem:
  • The declared package “com.vaadin” does not match the expected package “com.vaadin.starter.skeleton”
  • at com.vaadin.starter.skeleton.Servlet.(Servlet.java:1)
  • at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
  • …

What obvious step have I missed?

Thanks!

2

Hi Harry,

Which project base did you use? This one? https://vaadin.com/start/v10-project-base

How did you start your server? In my machine I executed these steps and couldn’t reproduce the error (using Eclipse Oxygen 3 and Java JDK 8u172):

  1. import the project as a maven project (File > Import... > Existing Maven Projects > (Select your base project))
  2. after the project is built, right click on it at the package explorer and do Run as... > Maven build...
  3. type jetty:run at the Goals field, then click Run

![Eclipse on Windows]
(https://vaadin.com/attachment/b72b5efb-33b0-4081-827a-c4e9f77487b7/eclipse.png)

That should build the project (if not yet) and run the server. Going to http://localhost:8080 should show the initial page.

Let me know if you still have any problems.
17055255.png