Java Map Sort sortByKeys(Map map)

Description

sort By Keys

License

Open Source License

Declaration

public static <K extends Comparable, V extends Comparable> Map<K, V> sortByKeys(Map<K, V> map) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.util.Collections;

import java.util.LinkedHashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;

public class Main {
    public static <K extends Comparable, V extends Comparable> Map<K, V> sortByKeys(Map<K, V> map) {
        List<K> keys = new LinkedList<K>(map.keySet());
        Collections.sort(keys);//from   ww  w  . j a  v  a2s .  c o  m

        //LinkedHashMap will keep the keys in the order they are inserted
        //which is currently sorted on natural ordering
        Map<K, V> sortedMap = new LinkedHashMap<K, V>();
        for (K key : keys) {
            sortedMap.put(key, map.get(key));
        }

        return sortedMap;
    }
}

Related

1. sortByDescendingValues(Map unsortMap)
2. sortByKey(final Map map, String order)
3. sortByKey(Map map)
4. sortByKey(T map, final boolean descending)
5. sortByKeys( Map map)
6. sortByMap(List> lists)
7. sortByMap(Map map, int size)
8. sortByValue( final Map map)
9. sortByValue( Map map)