if (pkgRoot.isArchive())
if (pkgRoot != null && pkgRoot.isArchive())
	private static boolean isBinary(IJavaElement jElement) {		if (jElement instanceof IMember)			return ((IMember)jElement).isBinary();		IPackageFragmentRoot pkgRoot= (IPackageFragmentRoot)jElement.getAncestor(IJavaElement.PACKAGE_FRAGMENT_ROOT);		if (pkgRoot.isArchive())			return true;		return false;	}