Sorting LinkedHashMap

Question

How can I sort a LinkedHashMap based on its values given that the LinkedHashMap contains of String and Integer. So I need to sort it based on the Values which are Integers. Thanks a lot

Answer 1

List<Map.Entry<String, Integer>> entries =   new ArrayList<Map.Entry<String, Integer>>(map.entrySet()); Collections.sort(entries, new Comparator<Map.Entry<String, Integer>>() {   public int compare(Map.Entry<String, Integer> a, Map.Entry<String, Integer> b){     return a.getValue().compareTo(b.getValue());   } }); Map<String, Integer> sortedMap = new LinkedHashMap<String, Integer>(); for (Map.Entry<String, Integer> entry : entries) {   sortedMap.put(entry.getKey(), entry.getValue()); } 

Answer 2

This is now quite a bit easier with Java 8 streams: you don't need the intermediate map to sort:

map.entrySet().stream()     .sorted(Map.Entry.comparingByValue())     .forEach(entry -> ... );