/* * This file was derived from libdissipate, an open source SIP library. The original file  * was modified on 1/23/2001.  Please see * http://www.div8.net/dissipate for more information. * * Copyright (c) 2000 Billy Biggs <bbiggs@div8.net> * * * This library is free software; you can redistribute it and/or modify it * under the terms of the GNU Library General Public License as published by * the Free Software Foundation; either version 2 of the License, or (at your * option) any later version. *  * This library 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 Library General Public * License for more details. *  * You should have received a copy of the GNU Library General Public License * along with this library; see the file COPYING.LIB.  If not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, * MA 02111-1307, USA. * *//** * class SipUtil *  * Container class for useful functions needed by the stack in general.  I'd * like to put these somewhere else.  They're not needed outside of the stack. * * This code has been generated using C2J++ * C2J++ is based on Chris Laffra's C2J (laffra@watson.ibm.com) * Read general disclaimer distributed with C2J++ before using this code * For information about C2J++, send mail to Ilya_Tilevich@ibi.com */package org.mitre.jsip;import java.io.File;import java.net.InetAddress;import java.net.UnknownHostException;public class SipUtil{    /**     * SipUtil     */    public SipUtil()    {}    /**     * getLocalFqdn     * @return char*     */    public static String getLocalFqdn()    {	if ( dissipate_our_fqdn == null ) {	    findFqdn();	}	return dissipate_our_fqdn;    }    /**     * checkFilename     * @param filename     * @return bool     */    public boolean checkFilename(String filename)    {	File fd = new File(filename);	return fd.exists();    }    /**     */    static void findFqdn()    {	InetAddress hostAddr = null;	try {	    hostAddr = InetAddress.getLocalHost();	} catch (UnknownHostException uhe) {	    System.err.println("Couldn't get InetAddress for localhost");	    dissipate_our_fqdn = "Unknown";	    return;	}	dissipate_our_fqdn = hostAddr.getHostName();    }    // class variables    static String dissipate_our_fqdn = null ;     /**     * test method     */    public static void main( String[] args ) {	System.out.println("The local hostname found is " + SipUtil.getLocalFqdn());    }}