Bug 9304 new class wizard: incorrect terminology used
1. new class wizard 2. press Add.. in interfaces 3. the dialog you see has a title 'Extended Interfaces Selection' this is incorrect - it should be 'Implemented Interfaces Selection' (this bug was pointed out on the wsad newsgroup)
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/TypePage.java
if (root == null) {
			return null;
		}	
		IJavaElement[] elements= new IJavaElement[] { root.getJavaProject() };
		IJavaSearchScope scope= SearchEngine.createJavaSearchScope(elements);
		TypeSelectionDialog dialog= new TypeSelectionDialog(getShell(), getWizard().getContainer(), IJavaSearchConstants.CLASS, scope);
		dialog.setTitle(NewWizardMessages.getString("TypePage.SuperClassDialog.title")); 
		dialog.setMessage(NewWizardMessages.getString("TypePage.SuperClassDialog.message")); 
		if (fSuperClass != null) {
			dialog.setFilter(fSuperClass.getElementName());
		}
		if (dialog.open() == dialog.OK) {
			return (IType) dialog.getFirstResult();
		}
		return null;
	}
	
	private void chooseSuperInterfaces() {
		IPackageFragmentRoot root= getPackageFragmentRoot();
		if (root == null) {
			return;
		}	
		IJavaProject project= root.getJavaProject();
		SuperInterfaceSelectionDialog dialog= new SuperInterfaceSelectionDialog(getShell(), getWizard().getContainer(), fSuperInterfacesDialogField, project);
		dialog.setTitle(NewWizardMessages.getString("TypePage.InterfacesDialog.title")); 
		dialog.setMessage(NewWizardMessages.getString("TypePage.InterfacesDialog.message")); 
		dialog.open();
		return;
	}