Java HashMap Sort sortHashMapByKeys(HashMap passedMap, boolean ascending)

Description

sort Hash Map By Keys

License

LGPL

Parameter

Parameter	Description
passedMap	a parameter
ascending	a parameter

Declaration

public static ArrayList sortHashMapByKeys(HashMap passedMap, boolean ascending) 

Method Source Code

//package com.java2s;
//License from project: LGPL 

import java.util.ArrayList;

import java.util.Collections;
import java.util.HashMap;

import java.util.Iterator;

import java.util.List;

public class Main {
    /**//from ww  w.  j  ava 2s  . c o  m
     * @param passedMap
     * @param ascending
     * @return
     */
    public static ArrayList sortHashMapByKeys(HashMap passedMap, boolean ascending) {

        List mapKeys = new ArrayList(passedMap.keySet());
        Collections.sort(mapKeys);

        if (!ascending)
            Collections.reverse(mapKeys);

        ArrayList result = new ArrayList();
        Iterator keyIt = mapKeys.iterator();
        while (keyIt.hasNext()) {
            Object key = keyIt.next();
            result.add(passedMap.get(key));

        }
        return result;
    }
}

Related

1. getSortedHashMapKeyset(Map sorting)
2. getSortedLinkedHashMap(Map bitCounts, Comparator