public List<String> getIntersectionList(List<String> list1, List<String> list2) {
		List<String> commonList = new ArrayList<>();
		/*
		 * List<String> commonList = new ArrayList<>(list1);
		 * commonList.retainAll(list2); return commonList;
		 */
		if (list1.size() > list2.size()) {
			for (String obj : list2) {
				if (list1.contains(obj)) {
					commonList.add(obj);
				}
			}
		} else {
			for (String obj : list1) {
				if (list2.contains(obj)) {
					commonList.add(obj);
				}
			}
		}
		return commonList;
	}