public static boolean isEqual(List<String> expected, List<String> received) {
		if(expected==null||received==null) {
			return expected==null&&received==null;
		} else if(expected.size()!=received.size()) {
			return false;
		}
		for(int i = 0; i < expected.size(); i++) {
			if(!expected.get(i).equals(received.get(i))) {
				return false;
			}
		}
		return true;
	}