Bug 31683 Show In doesn't work for class file in rt.jar
I20030611 - create Test project that uses Jar container - open NumberFormat.class - activate Show In... and choose Package Explorer Observe: NumberFormat.class doesn't get revealed.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/packageview/PackageExplorerActionGroup.java
actionBars.setGlobalActionHandler(IWorkbenchActionConstants.MOVE, fMoveResourceAction);
				actionBars.updateActionBars();
				fLastElement= RESOURCE;
			}
		} else {
			if (fLastElement != REST) {
				actionBars.setGlobalActionHandler(IWorkbenchActionConstants.RENAME, null);
				actionBars.setGlobalActionHandler(IWorkbenchActionConstants.MOVE, null);
				actionBars.updateActionBars();
				fLastElement= REST;
			}
		}
	}
	
	 void restoreFilterAndSorterState(IMemento memento) {
		fMemberFilterActionGroup.restoreState(memento);
		fWorkingSetFilterActionGroup.restoreState(memento);
		fCustomFiltersActionGroup.restoreState(memento);
	}
	
	 void saveFilterAndSorterState(IMemento memento) {
		fMemberFilterActionGroup.saveState(memento);
		fWorkingSetFilterActionGroup.saveState(memento);
		fCustomFiltersActionGroup.saveState(memento);
	}
	
	public void fillActionBars(IActionBars actionBars) {
		super.fillActionBars(actionBars);
		setGlobalActionHandlers(actionBars);
		fillToolBar(actionBars.getToolBarManager());