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
if (fHasWorkingSetFilter)
			fWorkingSetFilterActionGroup.saveState(memento);
		if (fHasCustomFilter)
			fCustomFiltersActionGroup.saveState(memento);
	}	
	protected void restoreState(IMemento memento) {
		if (fHasWorkingSetFilter)
			fWorkingSetFilterActionGroup.restoreState(memento, true);
		if (fHasCustomFilter)
			fCustomFiltersActionGroup.restoreState(memento, true);
	}	
	/**
	 * Creates the search list inner viewer.
	 */
	public void createPartControl(Composite parent) {
		Assert.isTrue(fViewer == null);
		fTypeComparator= new JavaElementTypeComparator();
		
		fViewer= createViewer(parent);
		fLabelProvider= createLabelProvider();
		ILabelDecorator decorationMgr= PlatformUI.getWorkbench().getDecoratorManager().getLabelDecorator();
		fViewer.setLabelProvider(new DecoratingLabelProvider(fLabelProvider, decorationMgr));
		
		fViewer.setSorter(new JavaElementSorter());
		fViewer.setUseHashlookup(true);
		fTitleProvider= createTitleProvider();
		
		MenuManager menuMgr= new MenuManager("#PopupMenu"); 
		menuMgr.setRemoveAllWhenShown(true);
		menuMgr.addMenuListener(this);