Here you can find the source of convertIpToString(byte[] ip)
public static String convertIpToString(byte[] ip)
//package com.java2s; /*/*from w w w. j a v a2s. c om*/ * LumaQQ - Java QQ Client * * Copyright (C) 2004 luma <stubma@163.com> * notXX * * 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 2 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, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ public class Main { private static StringBuilder sb = new StringBuilder(); public static String convertIpToString(byte[] ip) { sb.delete(0, sb.length()); for (int i = 0; i < ip.length; i++) { sb.append(ip[i] & 0xFF).append('.'); } sb.deleteCharAt(sb.length() - 1); return sb.toString(); } }