채팅방2

package com.socket;

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

public class MultiClient implements ActionListener {
	// Socket 통신을 위한 객체 선언
	private Socket socket;
	private ObjectInputStream ois;
	private ObjectOutputStream oos;

	// 화면 UI를 위한 객체 선언
	private JFrame jframe;
	private JTextField jtf;
	private JTextArea jta;
	private JLabel jlb1, jlb2;
	private JPanel jp1, jp2;
	private JButton jbtn;

	// ip주소와 id저장
	private String ip;
	private String id;

	public MultiClient(String argIp, String argId) {
		ip = argIp;
		id = argId;
		jframe = new JFrame("Multi Chatting");
		jtf = new JTextField(30);
		jta = new JTextArea("", 10, 50);
		jlb1 = new JLabel("Usage ID : [[ " + id + "]]");
		jlb2 = new JLabel("IP : " + ip);
		jbtn = new JButton("종료");
		jp1 = new JPanel();
		jp2 = new JPanel();

		jlb1.setBackground(Color.yellow);
		jlb2.setBackground(Color.green);
		jta.setBackground(Color.pink);

		jp1.setLayout(new BorderLayout());
		jp2.setLayout(new BorderLayout());

		jp1.add(jbtn, BorderLayout.EAST);
		jp1.add(jtf, BorderLayout.CENTER);
		jp2.add(jlb1, BorderLayout.CENTER);
		jp2.add(jlb2, BorderLayout.EAST);

		jframe.add(jp1, BorderLayout.SOUTH);
		jframe.add(jp2, BorderLayout.NORTH);

		JScrollPane jsp = new JScrollPane(jta,
				JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
				JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
		jframe.add(jsp, BorderLayout.CENTER);

		jtf.addActionListener(this);
		jbtn.addActionListener(this);
		jframe.addWindowListener(new WindowAdapter() {
			public void windowClosing(WindowEvent e) {
				try {
					oos.writeObject(id + "#exit");
				} catch (IOException ee) {
					ee.printStackTrace();
				}
				System.exit(0);
			}

			public void windowOpened(WindowEvent e) {
				jtf.requestFocus();
			}
		});
		jta.setEditable(false);
		Toolkit tk = Toolkit.getDefaultToolkit();
		Dimension d = tk.getScreenSize();
		int screenHeight = d.height;
		int screenWidth = d.width;
		jframe.pack();
		jframe.setLocation((screenWidth - jframe.getWidth()) / 2,
				(screenHeight - jframe.getHeight()) / 2);
		jframe.setResizable(false);
		jframe.setVisible(true);
	}

	public void actionPerformed(ActionEvent e) {
		Object obj = e.getSource();
		String msg = jtf.getText();
		if (obj == jtf) {
			if (msg == null || msg.length() == 0) {
				JOptionPane.showMessageDialog(jframe, "글을 쓰세요", "경고",
						JOptionPane.WARNING_MESSAGE);
			} else {
				try {
					oos.writeObject(id + "#" + msg);
				} catch (IOException ee) {
					ee.printStackTrace();
				}
				jtf.setText("");
			}
		} else if (obj == jbtn) {
			try {
				oos.writeObject(id + "#exit");
			} catch (IOException ee) {
				ee.printStackTrace();
			}
			System.exit(0);
		}
	}

	public void exit(){
		System.exit(0);
	}

	public void init() throws IOException{
		socket = new Socket(ip,5000);
		System.out.println("connected....");
		oos = new ObjectOutputStream(socket.getOutputStream());
		ois = new ObjectInputStream(socket.getInputStream());
		
		MultiClientThread ct = new MultiClientThread(this);
		Thread t = new Thread(ct);
		t.start();
	}
	public static void main(String[] args) throws IOException {
		JFrame.setDefaultLookAndFeelDecorated(true);
		MultiClient cc = new MultiClient("211.183.2.80", "쌍칼");
		
		cc.init();
	}
	
	public ObjectInputStream getOis(){
		return ois;
	}
	public JTextArea getJta(){
		return jta;
	}
	public String getId(){
		return id;
	}
}

package com.socket;

public class MultiClientThread extends Thread {
	private MultiClient mc;

	public MultiClientThread(MultiClient mc) {
		this.mc = mc;
	}
	public void run() {
		String message = null;
		String[] receivedMsg = null;
		boolean isStop = false;
		while (!isStop) {
			try {
				message = (String) mc.getOis().readObject();
				receivedMsg = message.split("#");
			} catch (Exception e) {
				e.printStackTrace();
				isStop = true;
			}
			System.out.println(receivedMsg[0] + "," + receivedMsg[1]);
			if (receivedMsg[1].equals("exit")) {
				if (receivedMsg[0].equals(mc.getId())) {
					mc.exit();
				} else {
					mc.getJta().append(receivedMsg[0] 
							+"님이 종료 하셨습니다."+System.getProperty("line.separator"));
					mc.getJta().setCaretPosition(mc.getJta().getDocument().getLength());
				}
			}else{
				mc.getJta().append(receivedMsg[0]+" : "
						+receivedMsg[1]+System.getProperty("line.separator"));
				mc.getJta().setCaretPosition(mc.getJta().getDocument().getLength());
			}
		}
	}
}