import java.io.*;/***Command line interface to the java port scanner**Copyright (C) 2002 Tom Salmon tom@slashtom.org**This program is free software; you can redistribute it and/ormodify it under the terms of the GNU General Public Licenseas published by the Free Software Foundation; version 2.This program is distributed in the hope that it will be useful,but WITHOUT ANY WARRANTY; without even the implied warranty ofMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See theGNU General Public License for more details.You should have received a copy of the GNU General Public Licensealong with this program; if not, write to the Free SoftwareFoundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.**@author Tom Salmon tom@slashtom.org*@version 0.3.1*/public class JMap{	public static void main(String [] args){        System.out.println("GNU JMap - Java Port Scanner, Copyright 2002, " +                           " Tom Salmon tom@slashtom.org\n"+                           "GNU JMap comes with ABSOLUTELY NO WARRANTY\n" +                           "This is free software, and you are welcome to " +                           "redistribute it under certain\n conditions\n");		Scan scan;		try{			if (args.length == 1){				scan = new Scan(args[0]);				System.out.println(scan.scan());			}			else if (args.length == 4 && args[0].equals("-p")){				scan = new Scan(args[3], 					   Integer.parseInt(args[1]), Integer.parseInt(args[2]));				System.out.println(scan.scan());			}			else{				System.err.println("USAGE: JMap [-p <start port> <end port>] "								   + "HOSTNAME");				System.exit(-1);			}		}		catch(Exception e){			System.err.println(e.getMessage());		}	}}