Convert a raw IP address array as a String : IP Address « Network Protocol « Java

1. Java
2. Network Protocol
3. IP Address

Convert a raw IP address array as a String

/* * Copyright (C) 2006-2008 Alfresco Software Limited. * * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * As a special exception to the terms and conditions of version 2.0 of * the GPL, you may redistribute this Program in connection with Free/Libre * and Open Source Software ("FLOSS") applications as described in Alfresco's * FLOSS exception. You should have recieved a copy of the text describing * the FLOSS exception, and it is also available here: * http://www.alfresco.com/legal/licensing" *///package net.gqu.utils; import java.util.StringTokenizer; /** * TCP/IP Address Utility Class * * @author gkspencer */publicclass IPAddress { /** * Convert a raw IP address array as a String * * @param ipaddr byte[] * @return String */publicfinalstatic String asString(byte[] ipaddr) { // Check if the address is valid if ( ipaddr == null || ipaddr.length != 4) return null; // Convert the raw IP address to a string  StringBuffer str = new StringBuffer(); str.append((int) ( ipaddr[0] & 0xFF)); str.append("."); str.append((int) ( ipaddr[1] & 0xFF)); str.append("."); str.append((int) ( ipaddr[2] & 0xFF)); str.append("."); str.append((int) ( ipaddr[3] & 0xFF)); // Return the address string return str.toString(); } /** * Convert a raw IP address array as a String * * @param ipaddr int * @return String */publicfinalstatic String asString(int ipaddr) { byte[] ipbyts = newbyte[4]; ipbyts[0] = (byte) ((ipaddr >> 24) & 0xFF); ipbyts[1] = (byte) ((ipaddr >> 16) & 0xFF); ipbyts[2] = (byte) ((ipaddr >> 8) & 0xFF); ipbyts[3] = (byte) (ipaddr & 0xFF); return asString(ipbyts); } } 

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