Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright (c) 2012 M. M. Naseri <m.m.naseri@gmail.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this
 * software and associated documentation files (the "Software"), to deal in the Software
 * without restriction, including without limitation the rights to use, copy, modify,
 * merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to the following
 * conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies
 * or substantial portions of the Software.
 */

import java.util.*;

import java.util.concurrent.CopyOnWriteArraySet;

public class Main {
    /**
     * This method, as the name suggests, will take the union of all the input sets,
     * creating an output, thread-safe set.
     * @param collections    input sets
     * @param <E>     type of set items
     * @return a set that is the union of all input sets
     */
    public static <E> Set<E> union(Collection<E>... collections) {
        final CopyOnWriteArraySet<E> result = new CopyOnWriteArraySet<E>();
        for (Collection<E> collection : collections) {
            result.addAll(collection);
        }
        return result;
    }
}