sorting hashmap by key in java 8
Map<String, String> newMapSortedByKey = sample.entrySet().stream()
.sorted((e1,e2) -> e1.getKey().compareTo(e2.getKey()))
.collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue, (e1,e2) -> e1, LinkedHashMap::new));sort a map based on keys and values using java 8
Map< Integer, String> map=new HashMap<Integer, String>();
map.put(101, "Hemendra");
map.put(99, "Andrew");
map.put(103, "Anish");
map.put(18, "Mohan");
map.put(11, "Christine");
map.put(109, "Rebeca");
map.put(111, "David");
map.put(19, "Rahim");
map.put(10, "Krishna");
Required to sort the map:
1. On the basis of keys:
[10=Krishna, 11=Christine, 18=Mohan, 19=Rahim, 99=Andrew, 101=Hemendra, 103=Anish, 109=Rebeca, 111=David]
2. On the basis of values:
[99=Andrew, 103=Anish, 11=Christine, 111=David, 101=Hemendra, 10=Krishna, 18=Mohan, 19=Rahim, 109=Rebeca]
Solution:
System.out.println(map.entrySet().stream().sorted(Map.Entry.comparingByKey()).collect(Collectors.toList()));
System.out.println(map.entrySet().stream().sorted(Map.Entry.comparingByValue()).collect(Collectors.toList()));Copyright © 2021 Codeinu
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