sort HashMap By Value - Java java.util

Java examples for java.util:HashMap

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Description

sort HashMap By Value

Demo Code


//package com.java2s;

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

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

public class Main {
    public static HashMap sortByValue(HashMap map) {
        List list = new LinkedList(map.entrySet());
        Collections.sort(list, new Comparator() {
            public int compare(Object o1, Object o2) {
                return ((Comparable) ((Map.Entry) (o2)).getValue())
                        .compareTo(((Map.Entry) (o1)).getValue());
            }/*from w  w w .j a v  a 2 s. com*/
        });

        HashMap result = new LinkedHashMap();
        for (Iterator it = list.iterator(); it.hasNext();) {
            Map.Entry entry = (Map.Entry) it.next();
            result.put(entry.getKey(), entry.getValue());
        }
        return result;
    }
}

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