Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright (c) 2014 Eike Stepper (Berlin, Germany) and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Eike Stepper - initial API and implementation
 */

import java.util.LinkedHashSet;
import java.util.Map;
import java.util.Set;

public class Main {
    public static <K, V> boolean add(Map<K, Set<V>> map, K key, V value) {
        Set<V> set = getSet(map, key);
        return set.add(value);
    }

    public static <K, V> Set<V> getSet(Map<K, Set<V>> map, K key) {
        Set<V> set = map.get(key);
        if (set == null) {
            set = new LinkedHashSet<V>();
            map.put(key, set);
        }

        return set;
    }
}