appchatclient.java

java关于.net编程的一些简单实例

import java.net.*;
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
public class AppChatClient extends Applet implements Runnable{
	private TextField nameBox=new TextField("<名字>");
	private TextArea msgView=new TextArea();
	private TextField sendBox=new TextField();
	private BufferedReader reader;
	private PrintWriter writer;
	private Socket socket;
	private Thread chatThread;
	private boolean loop=true;
	public void init(){
		msgView.setEditable(false);
		setLayout(new BorderLayout());
		add(nameBox,"North");
		add(msgView,"Center");
		add(sendBox,"South");
		sendBox.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent e){
				writer.println(nameBox.getText()+":"+sendBox.getText());
				sendBox.setText("");
			}
		});
	}
	public void run(){
		while(loop){
			try{
				msgView.append(reader.readLine()+"\n");
			}catch(IOException e){}
		}
	}
	public void start(){
		msgView.setText("尝试与ServerSocket连接...");
		try{
			socket=new Socket("127.0.0.1",7777);
			msgView.setText("Ready...\n");
			reader=new BufferedReader(new InputStreamReader(socket.getInputStream()));
			writer=new PrintWriter(socket.getOutputStream(),true);
			chatThread=new Thread(this);
			chatThread.start();
		}catch(Exception ex){}
	}
	public void stopThread(){
		loop=false;
	}
	public void stop(){
		stopThread();
		try{
			if(reader!=null)reader.close();
			if(writer!=null)writer.close();
			if(socket!=null)socket.close();
		}catch(IOException e){}
	}

}