Bug 18067 Packages View filters not applied when eclipse restarted
Eclipse F1 1) Create a java project with a .classpath file 2) In the packages view open the filter dialog and uncheck "Hide .* files". 3) Notice that the .classpath file is visible 4) Exit eclipse 5) Launch eclipse again. 6) Notice that the .classpath file is not visible in the packages view 7) Open the filter dialog for the Packages view. Notice that "Hide .* files" is still unchecked.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/browsing/JavaBrowsingPart.java
action= fBuildActionGroup.getRefreshAction();
			if (action.isEnabled())
				action.run();
		} if (event.character == SWT.DEL) {
			action= fCCPActionGroup.getDeleteAction();
			if (action.isEnabled())
				action.run();
		}
	}
	
	
	
	protected void fillToolBar(IToolBarManager tbm) {
	}	
	/**
	 * Called when the context menu is about to open.
	 * Override to add your own context dependent menu contributions.
	 */
	public void menuAboutToShow(IMenuManager menu) {
		JavaPlugin.createStandardGroups(menu);
		
		IStructuredSelection selection= (IStructuredSelection) fViewer.getSelection();
		int size= selection.size();		
		Object element= selection.getFirstElement();
		IJavaElement jElement= element instanceof IJavaElement ? (IJavaElement)element : null;
		
		if (size == 0 || (size == 1 && (isNewTarget(jElement) || element instanceof IContainer))) {
			MenuManager newMenu= new MenuManager(PackagesMessages.getString("PackageExplorer.new")); 
			menu.appendToGroup(IContextMenuConstants.GROUP_NEW, newMenu);
			new NewWizardMenu(newMenu, getSite().getWorkbenchWindow(), false);