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
element= getSuitableJavaElement(element);
		if (element == null)
			return false;
		Object input= getViewer().getInput();
		if (input == null)
			return false;
		if (input instanceof Collection)
			return ((Collection)input).contains(element);
		else
			return input.equals(element);
	}
	private boolean isInputResetBy(Object newInput, Object input, IWorkbenchPart part) {
		if (newInput == null)
			return part == fPreviousSelectionProvider;
			
		if (input instanceof IJavaElement && newInput instanceof IJavaElement)
			return getTypeComparator().compare(newInput, input)  > 0;
		else
			return false;
	}
	private boolean isInputResetBy(IWorkbenchPart part) {
		if (!(part instanceof JavaBrowsingPart))
			return true;
		Object thisInput= getViewer().getInput();
		Object partInput= ((JavaBrowsingPart)part).getViewer().getInput();
		if (thisInput instanceof IJavaElement && partInput instanceof IJavaElement)
			return getTypeComparator().compare(partInput, thisInput) > 0;
		else
			return true;
	}