Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright (C) 2005-2014 Alfresco Software Limited.
 *
 * This file is part of Alfresco
 *
 * Alfresco is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Alfresco is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
 */

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

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

public class Main {
    /**
     * Creates a new sorted map, based on the values from the given map and Comparator.
     * 
     * @param map the map which needs to be sorted
     * @param valueComparator the Comparator
     * @return a new sorted map
     */
    public static <K, V> Map<K, V> sortMapByValue(Map<K, V> map, Comparator<Entry<K, V>> valueComparator) {
        if (map == null) {
            return Collections.emptyMap();
        }

        List<Entry<K, V>> entriesList = new LinkedList<>(map.entrySet());

        // Sort based on the map's values
        Collections.sort(entriesList, valueComparator);

        Map<K, V> orderedMap = new LinkedHashMap<>(entriesList.size());
        for (Entry<K, V> entry : entriesList) {
            orderedMap.put(entry.getKey(), entry.getValue());
        }
        return orderedMap;
    }
}