src/main/java/com/zandero/utils/MapUtils.java
public static <K, V> Map<K, V> sort(Map<K, V> map, Comparator<Map.Entry<K, V>> comparator) {

		Assert.notNull(map, "Missing map!");
		Assert.notNull(comparator, "Missing comparator!");

		List<Map.Entry<K, V>> list = new LinkedList<>(map.entrySet());
		Collections.sort(list, comparator);


		Map<K, V> result = new LinkedHashMap<>();
		for (Map.Entry<K, V> entry : list) {
			result.put(entry.getKey(), entry.getValue());
		}
		return result;
	}
public static <K, V> Map<K, V> sort(Map<K, V> map, Comparator<Map.Entry<K, V>> comparator) {

		Assert.notNull(map, "Missing map!");
		Assert.notNull(comparator, "Missing comparator!");

		List<Map.Entry<K, V>> list = new LinkedList<>(map.entrySet());
		Collections.sort(list, comparator);


		Map<K, V> result = new LinkedHashMap<>();
		for (Map.Entry<K, V> entry : list) {
			result.put(entry.getKey(), entry.getValue());
		}
		return result;
	}
public static < K , V > Map < K , V > sort ( Map < K , V > map , Comparator < Map . Entry < K , V > > comparator ) { Assert . notNull ( map , "Missing map!" ) ; Assert . notNull ( comparator , "Missing comparator!" ) ; List < Map . Entry < K , V > > list = new LinkedList <> ( map . entrySet ( ) ) ; Collections . sort ( list , comparator ) ; Map < K , V > result = new LinkedHashMap <> ( ) ; for ( Map . Entry < K , V > entry : list ) { result . put ( entry . getKey ( ) , entry . getValue ( ) ) ; } return result ; }
Sorts map with comparator

@param map        to be sorted
@param comparator to apply
@param <K>        type of key
@param <V>        type of value
@return sorted map (LinkedHashMap)
Sorts map with comparator