Jface application does not start (deja vu)

[rgallen]

I am having a very similar problem to the one that tagewerk had on Oct 4th. I am running SWT Designer Professional on Eclipse 3.0M3. I am trying to do exactly what tagewerk was doing (creating the exact same Jface application from the IBM website). My symptoms however are different:

Code: Select all

java.lang.ClassCastException: java.lang.Object
   at jFaceApp$TreeContentProvider.getChildren(jFaceApp.java:43)
   at jFaceApp$TreeContentProvider.getElements(jFaceApp.java:40)
   at org.eclipse.jface.viewers.StructuredViewer.getRawChildren(StructuredViewer.java:502)
   at org.eclipse.jface.viewers.AbstractTreeViewer.getRawChildren(AbstractTreeViewer.java:670)
   at org.eclipse.jface.viewers.StructuredViewer.getFilteredChildren(StructuredViewer.java:449)
   at org.eclipse.jface.viewers.StructuredViewer.getSortedChildren(StructuredViewer.java:553)
   at org.eclipse.jface.viewers.AbstractTreeViewer$1.run(AbstractTreeViewer.java:319)
   at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:84)
   at org.eclipse.jface.viewers.AbstractTreeViewer.createChildren(AbstractTreeViewer.java:307)
   at org.eclipse.jface.viewers.AbstractTreeViewer$5.run(AbstractTreeViewer.java:753)
   at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:796)
   at org.eclipse.jface.viewers.AbstractTreeViewer.inputChanged(AbstractTreeViewer.java:744)
   at org.eclipse.jface.viewers.ContentViewer.setInput(ContentViewer.java:238)
   at org.eclipse.jface.viewers.StructuredViewer.setInput(StructuredViewer.java:983)
   at jFaceApp.createContents(jFaceApp.java:70)
   at org.eclipse.jface.window.Window.create(Window.java:302)
   at org.eclipse.jface.window.Window.open(Window.java:552)
   at jFaceApp.run(jFaceApp.java:88)
   at jFaceApp.main(jFaceApp.java:99)
Exception in thread "main"


What am I doing wrong ?

[admin]

Can you provide source code of you form?
As I can see from stack trace, there is some bad cast in TreeContentProvider.getChildren.

[rgallen]

Can you provide source code of you form?
As I can see from stack trace, there is some bad cast in TreeContentProvider.getChildren.

Thanks for the response. It was my bad. As you can probably tell, I'm new to this stuff. The issue was that I hadn't changed the treeViewer.setInput() appropriately in the createContent method.