Intermediate Java(54) - whileChatting Client

import java.io.*;

import java.net.*;

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

public class Client extends JFrame{

private JTextField userText;

private JTextArea chatwindow;

private ObjectOutputStream output;

private ObjectInputStream input;

private String message = "";

private String serverIP;

private Socket connection;

//constructor

public Client(String host){

super("Client mofo!");

serverIP = host;

userText = new JTextField();

userText.setEditable(false);

userText.addActionListener(

new ActionListener(){

public void actionPerformed(ActionEvent event){

sendData(event.getActionCommand());

userText.setText("");

}

}

);

add(userText, BorderLayout.NORTH);

chatwindow = new JTextArea();

add(new JScrollPane(chatwindow), BorderLayout.CENTER);

setSize(400,200);

setVisible(true);

}

//連接到服務器(Server)

public void startRunning(){

try{

connectToServer();

setupStreams();

whileChatting();

}catch(EOFException eofException){

showMessage("\n Client terminated connection");

}catch(IOException ioException){

ioException.printStackTrace();

}finally{

closeCrap();

}

}

//connectToServer函數

private void connectToServer() throws IOException{

showMessage("Attempting connection...\n");

connection = new Socket(InetAddress.getByName(serverIP),6789);

showMessage("Connected to:" + connection.getInetAddress().getHostName());

}

//設置發送和接收消息的Stream

private void setupStreams() throws IOException{

output =new ObjectOutputStream(connection.getOutputStream());

output.flush();

input = new ObjectInputStream(connection.getInputStream());

showMessage("\nyour streams are now good to go");

}

//當與服務器聊天

private void whilechatting() throws IOException{

ableTotype(true);

do{

try{

message = (String) input.readObject();

showMessage("\n" + message);

}catch(ClassNotFoundException classNotfoundException){

showMessage("\n I don't know that object type");

}

}while(!message.equals("SERVER - END"));

}

}

在這個class中的所有的意義，比如Server一樣