server.java

一个基于java rmi和applet的messenger,和普通聊天室略有不同

/*
This source code is for a simple java based chat program. This file is one of
the two files needed for the chat program. One being the "server.java" and
the other "client.java".This code is free for all.No guarantees of any sort!
This code is developed by Syed Ahmed Junaidulla...enjoy!
steps:
------
1->javac server.java
2->javac client.java
3->java server
4->java client(on another dos prompt)

---------------
You should get the output "Hi! ASL plz?" on the client application,
as soon as you run it!

---------------
For further help & assistance in understanding the code you can
always contact me!

---------------
Thankx for taking time to look at my code though you don't have enough time
appreciate it!

You can always visit me @ http://mypal.20m.com
*/

import java.awt.*;
import java.awt.event.*;
import java.net.*;
import java.io.*;

public class server extends Frame implements ActionListener, Runnable
{
        Image Icon = Toolkit.getDefaultToolkit().getImage("hi.gif");
        ServerSocket ss;
        Socket s;
	BufferedReader br;
	BufferedWriter bw;
	TextField text;
        Button sendBut, exitBut;
        List list;

        public server(String m) // class constructor
	{
                super(m);
                setSize(300, 130);
                setLocation(0,0);
                setIconImage(Icon);
                setResizable(false);
                setBackground(new Color(192, 192, 192));
                this.setLayout(new GridLayout(2, 1));

                Panel panels[] = new Panel[2];
                panels[0] = new Panel();
                panels[1] = new Panel();
                panels[0].setLayout(new BorderLayout());
                panels[1].setLayout(new FlowLayout(FlowLayout.LEFT));

                sendBut = new Button("Send");
                exitBut = new Button("Exit");

                sendBut.addActionListener(this);
                exitBut.addActionListener(this);

                list = new List();
                list.addItem("Server up & Listening on port plz wait...");

                text = new TextField(25);

                panels[0].add(list);
                panels[1].add(text);
                panels[1].add(sendBut);
                panels[1].add(exitBut);     

                add(panels[0]);
                add(panels[1]);

                setVisible(true);

                try
                {
                        ss = new ServerSocket(1053);//some port number, better be above 1000
                        s = ss.accept();
                        br = new BufferedReader(new InputStreamReader(s.getInputStream()));
                        bw = new BufferedWriter(new OutputStreamWriter(s.getOutputStream()));
                        bw.write("Hi! ASL plz??");
                        bw.newLine();
                        bw.flush();
                        Thread th;
                        th = new Thread(this);
                        th.start();
			 
			
		}catch(Exception e){}

	}

        public void run()
	{
                while (true)
		{
                        try                       
                        {
                                list.addItem(br.readLine());
                        }catch (Exception e){}
		}
	}

        public static void main(String arg[])
	{
                // create an object instance
                // by sending the title as a parameter
                new server("Junaid's Chat Server Applicaton");
	}
	
        public void actionPerformed(ActionEvent ae)
	{
                 if (ae.getSource().equals(exitBut))
			 System.exit(0);
                 else
                 {
                        try
                        {
                                bw.write(text.getText());
                                bw.newLine();bw.flush();
                                text.setText("");
                        }catch(Exception x){}
		 }
				  
	}
	
}