Java Map Sort sortMap(Map oldMap, final boolean asc)

Description

sort Map

License

Open Source License

Declaration

public static Map sortMap(Map oldMap, final boolean asc) 

Method Source Code

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

import java.util.*;

public class Main {

    public static Map sortMap(Map oldMap, final boolean asc) {
        if (null == oldMap) {
            return null;
        }//w w w  .j av a 2s.co  m
        ArrayList<Map.Entry<String, Integer>> list = new ArrayList<Map.Entry<String, Integer>>(oldMap.entrySet());
        Collections.sort(list, new Comparator<Map.Entry<String, Integer>>() {
            public int compare(Map.Entry<String, Integer> arg0, Map.Entry<String, Integer> arg1) {
                if (asc) {
                    return arg0.getValue() - arg1.getValue();
                } else {
                    return arg1.getValue() - arg0.getValue();
                }

            }
        });
        Map newMap = new LinkedHashMap();
        for (int i = 0; i < list.size(); i++) {
            newMap.put(list.get(i).getKey(), list.get(i).getValue());
        }
        return newMap;
    }
}

Related

1. sortKeysDesc(HashMap> hash)
2. sortKeyValuePairByValue( Map map)
3. sortMap(final Map map, final Comparator> comparator)
4. sortMap(LinkedHashMap map, Comparator> c)
5. sortMap(Map oldMap)
6. sortMap(Map map, int k)
7. sortMap(Map map, Comparator> compator)
8. sortMapByKey(Map data)
9. sortMapByKey(Map map)