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Help with WindowBuilder Pro XWT Application Wizard [message #673839]

Tue, 24 May 2011 22:50

Eric

Messages: 5
Registered: May 2011

Junior Member

Hi guys,

I am trying to use the WindoBuilder Pro XWT Application Wizard but I
keep seeing an error, and I don't know how to fix it. If anyone could
help me I would greatly appreciate it.

Here is what I did:
1) Install Java
2) Install Eclipse
3) Install WindowBuilder Pro Eclipse plugin (checked all boxes)
4) File->New->Project->WindowBuilder\SWT Designer\SWT/JFace Java Project
5) Ctrl-N->WindowBuilder\SWT Designer\XWT\XWT Application

At this point I am able to see my window in the editor, add controls,
modify it, edit the code, etc.

But when I right click the application -> run as -> Java Application
then I get this error message:

Exception in thread "main" java.lang.NoClassDefFoundError: org/eclipse/
core/databinding/conversion/IConverter
at org.eclipse.e4.xwt.XWTLoaderManager.<clinit>(XWTLoaderManager.java:19)
at org.eclipse.e4.xwt.XWT.load(XWT.java:379)
at com.Eric.SomeXwtApplication.main(SomeXwtApplication.java:16)
Caused by: java.lang.ClassNotFoundException:
org.eclipse.core.databinding.conversion.IConverter
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 3 more

I don't know how to troubleshoot this, am I missing a reference? Why
is the WindowBuilder Pro XWT application wizard not giving me the
reference?

Thanks,
Eric

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Re: Help with WindowBuilder Pro XWT Application Wizard [message #673871 is a reply to message #673839]

Wed, 25 May 2011 02:32

Eric

Messages: 5
Registered: May 2011

Junior Member

I figured it out myself,

I needed to add three .jar's to my project's references,
org.eclipse.core.databinding
org.eclipse.core.databinding.observable
org.eclipse.jface.databinding

I did that by clicking Project -> Properties -> Java Build Path ->
Libraries, Add External Jar's, and then I browsed to c:\eclipse
\plugins and found the .jars there and added them.

But, doesn't it seem like those jar's should have been added by the XWT Application Wizard? Is this a bug? Should users have to manually add those .jar's every time they create an XWT Application?

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