简陋聊天

Server 端：

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

public class ChatServer 
{
	public static void main(String args[])
	{
		new ServerFrame();
	}
}

class ServerFrame extends Frame
{
	
	ServerSocket server ;
	Socket client;
	Panel p1,p2,p3;
	TextArea ta1,ta2;
	Button btn1 ,btn2;
	BufferedReader in;
	PrintWriter sout;
	String s;
	
	public ServerFrame()
	{
		setTitle("服务器窗口");
		setSize(400,400);
		setLayout(new BorderLayout());
		
		ta1 = new TextArea(12,50);
		ta2 = new TextArea(5,50);
		ta1.setEditable(false);
		btn1 = new Button("发送");
		btn2 = new Button("关闭");
		btn1.addActionListener(new BtnSend());
		btn2.addActionListener(new BtnClose());
		
		p1 = new Panel();
		p1.setSize(390,300);
		p1.setLayout(new FlowLayout());
		p1.add(ta1);
		
		p2 = new Panel();
		p2.setSize(390,100);
		p2.setLayout(new FlowLayout());
		p2.add(ta2);
		
		p3 = new Panel();
		p3.setSize(390,40);
		p3.setLayout(new GridLayout(1,5,10,10));
		for(int i=0; i<3; i++)
			p3.add(new Label());
		p3.add(btn1);
		p3.add(btn2);
		
		add(p1,BorderLayout.NORTH);
		add(p2,BorderLayout.CENTER);
		add(p3,BorderLayout.SOUTH);
		addWindowListener(new WinL());
		setVisible(true);
		
		
		
		try
		{
				server = new ServerSocket(8000);
				client = new Socket();
			
				client = server.accept();
				in = new BufferedReader(new InputStreamReader(client.getInputStream()));
				sout = new PrintWriter(client.getOutputStream());
				ta1.append("Message from Client: " + in.readLine());
			
		}
		catch (Exception e)
		{
			System.out.println("连接错误");
			System.exit(0);
		}
		

	}
	class BtnSend implements ActionListener
	{
		public void actionPerformed(ActionEvent e)
		{
			try
			{
					s = ta2.getText();
					ta1.append("\nYou are saying: " + s);
					sout.println(s);
					sout.flush();
					ta1.append("\nMessage from Clinet: " + in.readLine());
			}catch (IOException e1){}
			ta2.setText("");
		}	
	}
		
	public void close()
	{
		try{
//			in.close();
//			sout.close();
			server.close();
			client.close();
		}catch(IOException e){}
	}
	
	class BtnClose implements ActionListener
	{
		public void actionPerformed(ActionEvent e)
		{
					close();
					System.exit(0);
		}
	}
	
	class WinL extends WindowAdapter
	{
		public void windowClosing(WindowEvent e)
		{
			close();
			System.exit(0);
		}
	}
}

Client 端：

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

public class ChatClient
{
	public static void main(String args[])
	{
		new ClientFrame();
	}
}

class ClientFrame extends Frame
{
	Socket myclient;
	Panel p1,p2,p3;
	TextArea ta1,ta2;
	Button btn1 ,btn2;
	BufferedReader in,cin;
	PrintWriter out;
	String s;
	
	public ClientFrame()
	{
		setTitle("客户端");
		setSize(400,400);
		setLayout(new BorderLayout());
		
		ta1 = new TextArea(12,50);
		ta2 = new TextArea(5,50);
		ta1.setEditable(false);
		btn1 = new Button("发送");
		btn2 = new Button("关闭");
		btn1.addActionListener(new BtnSend());
		btn2.addActionListener(new BtnClose());
		
		p1 = new Panel();
		p1.setSize(390,300);
		p1.setLayout(new FlowLayout());
		p1.add(ta1);
		
		p2 = new Panel();
		p2.setSize(390,100);
		p2.setLayout(new FlowLayout());
		p2.add(ta2);
		
		p3 = new Panel();
		p3.setSize(390,40);
		p3.setLayout(new GridLayout(1,5,10,10));
		for(int i=0; i<3; i++)
			p3.add(new Label());
		p3.add(btn1);
		p3.add(btn2);
		
		add(p1,BorderLayout.NORTH);
		add(p2,BorderLayout.CENTER);
		add(p3,BorderLayout.SOUTH);
		addWindowListener(new WinL());
		setVisible(true);
		
		try
		{
			myclient = new Socket(InetAddress.getLocalHost(),8000);
			in = new BufferedReader(new InputStreamReader(myclient.getInputStream()));
			out = new PrintWriter(myclient.getOutputStream());
		}catch (Exception e)
		{
			System.out.println("连接错误");
			System.exit(0);
		}	
	}
	
	public void close()
	{
		try
		{
			myclient.close();
			in.close();
			out.close();
		}catch(Exception e){}
		System.exit(0);
	}
	
	class BtnSend implements ActionListener
	{
		public void actionPerformed(ActionEvent e)
		{
				s = ta2.getText();
				try
				{	
						ta1.append("You are saying: " + s + "\n");
						out.println(s);
						out.flush();
						s=in.readLine();
						ta1.append("Message from server: " + s + "\n");
				}catch(IOException e1 ) { }
				ta2.setText("");
		}
	}
	
	class BtnClose implements ActionListener
	{
		public void actionPerformed(ActionEvent e)
		{
			close();
			System.exit(0);
		}
	}
	
	class WinL extends WindowAdapter
	{
		public void windowClosing(WindowEvent e)
		{
			close();
			System.exit(0);
		}
	}
}