Gøre kode objekt orienteret

Hej

Jeg er godt i gang med en irc bot i java, og jeg tænker at den nok kunne gøres mere objekt orienteret og struktureret end den er nu.

Koden er her, nogle forslag til hvad jeg kan ændre ?
(Java 1.4.x og bruger Eclipse som IDE)


package ircbot;

/**
IRC-bot v.3
@author: Claus Jørgensen
@date 23.01.05
*/

import java.io.*;
import java.net.*;
import java.util.Date;
import java.text.DateFormat;

public class IrcBot
{
  public static void main(String[] args) throws Exception
  {
    // variabler
    Socket ircSocket = null;
    PrintWriter out = null;
    BufferedReader in = null;
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    PrintWriter pw = new PrintWriter(new FileOutputStream("ircbot.log", true)); // log fil
    int position;
    int port;
    long starttime = System.currentTimeMillis();
    String username = new String();
    String server = new String();
    String newtopic = new String();
    String msg = new String();
    String channel = new String();
    String line;
    String RealName = new String("Teh 1337 Java-Bot, by TheDeathArt");  // Beskrivelse af botten
    String operators[] = new String[100];

    System.out.print("Indtast server: \n");
    server = br.readLine();                          // IP'en til serveren

    System.out.print("Indtast port: \n");
    port = Integer.parseInt(br.readLine());          // Porten til IRC-serveren

    System.out.print("Indtast botnick: \n");
    String botnick = br.readLine();                  // Bottens nick

    // Åbner en socket til irc netværket

    try
    {
      ircSocket = new Socket(server , port);
      out = new PrintWriter(ircSocket.getOutputStream(), true);
      in = new BufferedReader(new InputStreamReader(ircSocket.getInputStream()));
    }
    catch (UnknownHostException e)
    {
      System.err.println("Kunne ikke finde: " + server);
      System.exit(1);
    }

    while((line = in.readLine()) != null)
    {
      String newlinet = line.substring(2);

      if(line.indexOf("!") > 0)
      {
        position = line.indexOf("!");
        username = line.substring(1,position);
      }
 
      if(newlinet.indexOf(":") > 0)
      {
        position = newlinet.indexOf(":") + 1;
        String newline = newlinet.substring(position);
        pw.println(newline);
        pw.flush();
 
        System.out.println(newline);  // udkskriver pæn linje
 
        if(newlinet.indexOf("#") > 0)
        {
          position = newlinet.indexOf("#");
          String newchannel = newlinet.substring(position);
          if(newchannel.indexOf(":") > 0)
          {
            position = newchannel.indexOf(":") - 1;
            channel = newchannel.substring(0,position);
          }
        }
      }
      else
      {
        System.out.println(line);
        pw.println(line);
        pw.flush();
      }
 
      if(line.indexOf("No ident respons") > 0)
      {
        out.println("USER " + botnick  + " none none : " +  RealName );
        out.println();
        out.println("NICK " + botnick);
        out.println();
      }
 
      if(line.indexOf("End of /MOTD command.") > 0)
      {
        out.println("PRIVMSG TheDeathArt : Teh 1337 JavaBot is online my master");
      }
 
      /* Ping-Pong servicen, sørger for at holde botten online */
 
      if(line.startsWith("PING"))
      {
        out.println("PONG " + line.substring(5));
        System.out.println("Ping? Pong!");
      }
 
      /* checker for !uptime */
 
      if(line.indexOf("!uptime") > 0)
      {
        long uptime = (System.currentTimeMillis() - starttime) / 1000;
        out.println("NOTICE " + username + " :Min Uptime er " + uptime + " sek. ");
      }
 
      if(line.indexOf("!time") > 0)
      {
        Date now = new Date();
        DateFormat nowTime = DateFormat.getTimeInstance();
        out.println("NOTICE " + username + " :" + "Klokken er: " + nowTime.format(now));
      }
 
      if(line.indexOf("!topic") > 0)
      {
        position = line.indexOf("!topic") + 7;
        try
        {
          msg = line.substring(position);
 
          for(int i = 0; i < operators.length; i++) // løber listen af operators igennem ved forsøg på at sætte topic via. !topic
          {
              if( operators[i].equalsIgnoreCase("@" + username) )
              {
                System.out.println(username + " er godkendt");
              }
              else
              {
                System.out.println(username + " er IKKE godkendt");
              }
          }
          out.println("TOPIC " + channel + " :" + msg);
        } catch (Exception e) {}
      }
 
      if(line.indexOf("!listopers") > 0)
      {
        for(int i = 0; i < operators.length; i++)
        {
          System.out.println("Operators: " + operators[i]);
        }
      }
 
      if(line.indexOf("!say") > 0)
      {
        position = line.indexOf("!say") + 5;
        try
        {
          msg = line.substring(position);
          out.println("PRIVMSG " + channel + " :" + msg);
        } catch (Exception e) {}
      }
 
      if(line.indexOf("!join") > 0)
      {
        position = line.indexOf("!join") + 6;
        try
        {
          msg = line.substring(position);
          out.println("JOIN " + msg);
        } catch (Exception e) {}
      }

      if(line.indexOf("!part") > 0)
      {
        position = line.indexOf("!part") + 6;
        try
        {
          msg = line.substring(position);
          out.println("PART " + msg);
        } catch (Exception e) {}
      }
 
      /* lukker botten */
 
      if(line.indexOf("!quit") > 0)
      {
        out.println("QUIT : Farvel, og tak for denne gang");
        out.close();
        in.close();
        ircSocket.close();
        System.exit(0);
      }
 
      if(line.indexOf("!auth") > 0)
      {
        out.println("PRIVMSG Q@CServe.quakenet.org :AUTH JavaBot xhtml2004");
        System.out.println(" Q@CServe.quakenet.org :AUTH JavaBot xhtml2004");
      }
    }

    // Lukker sockets igen.
    out.close();
    in.close();
    ircSocket.close();
  }
}