Here you can find the source of bitSet(long holder, int i, boolean set)
public static long bitSet(long holder, int i, boolean set)
//package com.java2s; /**// w ww.ja va 2 s . c om * 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/>. */ public class Main { public static long bitSet(long holder, int i, boolean set) { if (i < 0 || i > 63) { throw new IllegalArgumentException("i should from 0 inclusive and 64 exclusive"); } if (set) { return holder | (1 << i); } else { int ii = 1 << i; return (holder | ii) ^ ii; } } }