public static Map<Integer, String> sortHashMap(HashMap<Integer, String> unsortedHashMap) {

		Map<Integer, String> treeMap = new TreeMap<Integer, String>(
			new Comparator<Integer>() {
			@Override
			public int compare(Integer o1, Integer o2) {
				return o1.compareTo(o2);
			}
		});
		treeMap.putAll(unsortedHashMap);
		printMap(treeMap);
		return treeMap;
	}