List notWanted= getFilteredExistingContainerEntries();
Object[] notWanted= getFilteredExistingContainerEntries();
	private IFolder chooseFolder() {			Class[] acceptedClasses= new Class[] { IFolder.class };		ISelectionValidator validator= new TypedElementSelectionValidator(acceptedClasses, false);		List notWanted= getFilteredExistingContainerEntries();		ViewerFilter filter= new TypedViewerFilter(acceptedClasses, notWanted);					ILabelProvider lp= new WorkbenchLabelProvider();		ITreeContentProvider cp= new WorkbenchContentProvider();		ElementTreeSelectionDialog dialog= new ElementTreeSelectionDialog(getShell(), lp, cp);		dialog.setValidator(validator);		dialog.setTitle(NewWizardMessages.getString("NewPackageRootCreationWizardPage.ChooseExistingRootDialog.title")); //$NON-NLS-1$		dialog.setMessage(NewWizardMessages.getString("NewPackageRootCreationWizardPage.ChooseExistingRootDialog.description")); //$NON-NLS-1$		dialog.addFilter(filter);				IProject proj= fCurrJProject.getProject();		if (dialog.open(proj, null) == dialog.OK) {			return (IFolder) dialog.getPrimaryResult();		}					return null;			}