Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/**
 * Copyright (C) 2014-2016 Regents of the University of California.
 * @author: Jeff Thompson <jefft0@remap.ucla.edu>
 *
 * This program 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.
 *
 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 * A copy of the GNU Lesser General Public License is in the file COPYING.
 */

import java.util.Random;

public class Main {
    private static Random randomNumberGenerator_;

    /**
     * Set the library-wide random number generator; this method will only allow the generator to be set once.
     * Additionally, this method is thread-safe in that it guarantees that only the first caller will be able to set
     * the generator.
     * @param randomNumberGenerator the random number generator
     * @throws UnsupportedOperationException if a user attempts to set the generator a second time
     */
    public static synchronized void setRandom(Random randomNumberGenerator) {
        if (randomNumberGenerator_ == null) {
            randomNumberGenerator_ = randomNumberGenerator;
        } else {
            throw new UnsupportedOperationException("The random number generator may only be set once");
        }
    }
}