Here you can find the source of longToString(long l)
public static String longToString(long l)
//package com.java2s; /*// w w w . ja v a2 s. c o m This file is part of PH-Tree: A multi-dimensional indexing and storage structure. Copyright (C) 2011-2015 Eidgen?ssische Technische Hochschule Z?rich (ETH Zurich) Institute for Information Systems GlobIS Group Bogdan Vancea, Tilmann Zaeschke zaeschke@inf.ethz.ch or zoodb@gmx.de This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero 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 Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ public class Main { public static String longToString(long l) { String bitString = Long.toBinaryString(l); int padding = 64 - bitString.length(); String output = ""; while (padding > 0) { padding--; output += "0"; } return output + bitString; } }