Java examples for Network:IP Address
Returns the IP address string "%d.%d.%d.%d" for the given IPv4 address.
/*// w w w . j av a 2 s. c om * NetCallback - forwarding TCP ports behind a firewall * Copyright (C) 2001 Alexander V. Konstantinou <akonstan@acm.org> * * 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 */ //package com.java2s; public class Main { /** * Returns the IP address string "%d.%d.%d.%d" for the given IPv4 address. * * @param address - a 4-byte array in network byte order * (highest order first) * @exception IllegalArgumentException - if the array address argument * is not of length 4 */ public static String getDottedIPv4Address(byte[] address) { if (address == null) { throw new NullPointerException("null address argument"); } if (address.length != 4) { throw new IllegalArgumentException( "Invalid IPv4 address length " + address.length); } return ((address[0] & 0xFF) + "." + (address[1] & 0xFF) + "." + (address[2] & 0xFF) + "." + (address[3] & 0xFF)); } }