is Bit Set in long value - Java java.lang

Java examples for java.lang:long

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Description

is Bit Set in long value

Demo Code

/**/* w w  w.  j  a  v  a  2s .c o m*/
 *  JMongo is a mongodb driver writtern in java.
 *  Copyright (C) 2010  Xiaohu Huang
 *
 *  JMongo 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.
 *
 *  JMongo 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 JMongo.  If not, see <http://www.gnu.org/licenses/>.
 */
//package com.java2s;

public class Main {
    public static void main(String[] argv) throws Exception {
        long holder = 2;
        int i = 2;
        System.out.println(isBitSet(holder, i));
    }

    public static boolean isBitSet(long holder, int i) {
        if (i < 0 || i > 63) {
            throw new IllegalArgumentException(
                    "i should from 0 inclusive and 64 exclusive");
        }
        return (holder & (1 << i)) > 0;
    }
}

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