Java Random Long randLong(long n)

Description

rand Long

License

Open Source License

Declaration

public static long randLong(long n) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 *              Crimson Extended Administration Tool (CrimsonXAT)              *
 *                   Copyright (C) 2015 Subterranean Security                  *
 *                                                                             *
 *     This program is free software: you can redistribute it and/or modify    *
 *     it under the terms of the GNU 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 General Public License for more details.                *
 *                                                                             *
 *      You should have received a copy of the GNU General Public License      *
 *      along with this program.  If not, see http://www.gnu.org/licenses      *
 *******************************************************************************/

import java.util.Random;

public class Main {
    public static long randLong(long n) {
        long bits, val;
        do {/* w ww  . j a v  a 2 s  . co m*/
            bits = (new Random().nextLong() << 1) >>> 1;
            val = bits % n;
        } while (bits - val + (n - 1) < 0L);
        return val;
    }
}

Related

1. nextLong(Random rng, long n)
2. nextLong(Random rng, long n)
3. nextLongId()
4. randLong()
5. randLong(long minimum, long maximum)
6. random(long begin, long end)
7. random(long max)
8. random(long min, long max)
9. random(long range)