Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * JPPF.
 * Copyright (C) 2005-2010 JPPF Team.
 * http://www.jppf.org
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.util.*;

public class Main {
    /**
     * Format a string with size information about a map whose values are lists of elements.
     * @param <T> the type of the keys in the map.
     * @param <U> the type of the values in the map.
     * @param name an arbitrary name given to the map.
     * @param map the map from which to get size information.
     * @return a string containing information about the number of elements in the map. 
     */
    public static <T, U> String formatSizeMapInfo(String name, Map<T, List<U>> map) {
        StringBuilder sb = new StringBuilder();
        sb.append(name).append("[shallow size=").append(map.size());
        sb.append(", total elements=").append(sizeOfListMap(map)).append("]");
        return sb.toString();
    }

    /**
     * Get the total number of elements in a map whose values are lists of elements.
     * @param <T> the type of the keys in the map.
     * @param <U> the type of the elements in the lists.
     * @param map the map of which to get the size.
     * @return the size of the map as an int value.
     */
    public static <T, U> int sizeOfListMap(Map<T, List<U>> map) {
        int result = 0;
        for (Map.Entry<T, List<U>> entry : map.entrySet())
            result += entry.getValue().size();
        return result;
    }
}