[eclipse-dev] Class not found by

["Amir Bukhari" <ufz6@xxxxxxxxxxxxxxxxxxx>]

Hallo,

 

I am trying to run a Jface/SWT Examples, every time I receive the following error:

 

java.lang.NoClassDefFoundError: org/eclipse/core/internal/boot/DelegatingURLClassLoader

      at org.eclipse.core.runtime.Platform.run(Platform.java:413)

      at org.eclipse.jface.viewers.StructuredViewer.updateItem(StructuredViewer.java:1271)

      at org.eclipse.jface.viewers.AbstractTreeViewer.createTreeItem(AbstractTreeViewer.java:320)

      at org.eclipse.jface.viewers.AbstractTreeViewer$1.run(AbstractTreeViewer.java:303)

      at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:69)

      at org.eclipse.jface.viewers.AbstractTreeViewer.createChildren(AbstractTreeViewer.java:289)

      at org.eclipse.jface.viewers.AbstractTreeViewer$5.run(AbstractTreeViewer.java:729)

      at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:801)

      at org.eclipse.jface.viewers.AbstractTreeViewer.inputChanged(AbstractTreeViewer.java:721)

      at org.eclipse.jface.viewers.ContentViewer.setInput(ContentViewer.java:238)

      at org.eclipse.jface.viewers.StructuredViewer.setInput(StructuredViewer.java:991)

      at explorer_4.Explorer.createContents(Explorer.java:25)

      at org.eclipse.jface.window.Window.create(Window.java:302)

      at org.eclipse.jface.window.Window.open(Window.java:552)

      at explorer_4.Explorer.main(Explorer.java:55)

 

this is the „import“ which I used,

 

import org.eclipse.jface.action.*;

import org.eclipse.jface.viewers.*;

import org.eclipse.jface.window.*;

import org.eclipse.swt.*;

import org.eclipse.swt.custom.*;

import org.eclipse.swt.widgets.*;

 

note that I am using the latest SWT/Jface