/* * Java Bittorrent API as its name indicates is a JAVA API that implements the Bittorrent Protocol * This project contains two packages: * 1. jBittorrentAPI is the "client" part, i.e. it implements all classes needed to publish *    files, share them and download them. *    This package also contains example classes on how a developer could create new applications. * 2. trackerBT is the "tracker" part, i.e. it implements a all classes needed to run *    a Bittorrent tracker that coordinates peers exchanges. * * * Copyright (C) 2007 Baptiste Dubuis, Artificial Intelligence Laboratory, EPFL * * This file is part of jbittorrentapi-v1.0.zip * * Java Bittorrent API is free software and a free user study set-up; * 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 2 of the License, or * (at your option) any later version. * * Java Bittorrent API 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 Java Bittorrent API; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA * * @version 1.0 * @author Baptiste Dubuis * To contact the author: * email: baptiste.dubuis@gmail.com * * More information about Java Bittorrent API: *    http://sourceforge.net/projects/bitext/ *///package atorrentapi;class Main {  /**   *    * Convert a byte[] array to readable string format. This makes the "hex"   * readable!   *    * @author Jeff Boyle   *    * @return result String buffer in String format   *    * @param in   *            byte[] buffer to convert to string format   *    */  // Taken from http://www.devx.com/tips/Tip/13540  public static String byteArrayToByteString(byte in[]) {    byte ch = 0x00;    int i = 0;    if (in == null || in.length <= 0)      return null;    String pseudo[] = { "0", "1", "2", "3", "4", "5", "6", "7", "8", "9",        "A", "B", "C", "D", "E", "F" };    StringBuffer out = new StringBuffer(in.length * 2);    while (i < in.length) {      ch = (byte) (in[i] & 0xF0); // Strip off high nibble      ch = (byte) (ch >>> 4); // shift the bits down      ch = (byte) (ch & 0x0F); // must do this is high order bit is on!      out.append(pseudo[(int) ch]); // convert the nibble to a String      // Character      ch = (byte) (in[i] & 0x0F); // Strip off low nibble      out.append(pseudo[(int) ch]); // convert the nibble to a String      // Character      i++;    }    String rslt = new String(out);    return rslt;  }}