麻烦给个注释

import java.net.*;
import java.io.*;
import java.util.*;
public class Server1
{
    ServerSocket sc;
    Socket s;
    Vector msgbox;
    int counter;
    Server1()
    {
        try
        {
            counter=0;
            Socket s;
            msgbox=new Vector();
        sc=new ServerSocket(9999);
        while(true)
        {
            s=sc.accept();
            new Connection(s).start();
        }
        
        }catch(Exception e){e.printStackTrace();}
        
        
    }
    public static void main(String args[])
    {
        new Server1();
    }
    class Connection extends Thread
    {
        Socket clientsocket;
        int clientcounter;
        PrintStream streamtoclient;
        BufferedReader readfromclient;
        ReadThread rt;
        WriteThread wt;
        Connection(Socket skt)
        {
            
                try
                {
                    clientsocket=skt;
                    streamtoclient=new PrintStream(clientsocket.getOutputStream());
                    readfromclient=new BufferedReader(new InputStreamReader(clientsocket.getInputStream()));
                    clientcounter=0;
                    
                }
                catch(Exception e)
                {
                    e.printStackTrace();
                }
            }
        public void run()
        {
            rt=new ReadThread();
            wt=new WriteThread();
            rt.start();
            wt.start();
        }
        class WriteThread extends Thread
        {
            public void run()
            {
                String str;
                try
                {
                    while(true)
                    {
                        for(int i=clientcounter;i<counter;i++)
                        {
                            str=(String)msgbox.elementAt(i);
                            streamtoclient.println(str);
                            clientcounter++;
                        }
                    }
                    
                }
                catch(Exception e)
                {
                    e.printStackTrace();
                }
            
            }
        }
        class ReadThread extends Thread
        {
            public void run()
            {
                while(true)
                {
                    try
                    {
                        String str;
                        str=readfromclient.readLine();
                        msgbox.addElement(str);
                        counter++;
                    }
                    catch(Exception e)
                    {
                        e.printStackTrace();
                    }
                }
            }
        }
        }
}
这个程序中有很多的问题,有可能的话就给个注释.几个比较迷惑的问题是connection的作用是什么，clientcounter和counter各代表什么，Connection(s).是什么意思，线程里可以套接socket吗？
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怎么没有人来回答呀，要不回答我下面的问题也可以吧．不可能是都不会吧，论坛里应该有很多的高手呀！
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