ftpd.java

java应用开发详解

import java.io.*;
import java.net.*;   

public class Ftpd 
{
	 
	public static void main(String[] args) 
	{
		
		if (args.length == 0) return;
		System.out.println("FTP accepting connections on 2020/2021");
		try 
		{
			ServerSocket s = new ServerSocket(2021);
			while (true) 
			{
				Socket socket = s.accept();
				new FtpdHandler(socket,args[0]);
                        }
                }
		catch(Exception e)
		{
			System.err.println("socket wrong!!!");
		}
	}
}