package?com;
import?java.io.*;
import?java.net.*;
import?java.awt.*;
import?javax.swing.*;
import?java.util.*;
import?java.util.List;


import?java.awt.event.*;
public?class?Chat?implements?ActionListener{
	

	private?static?Set?set=new?HashSet（）;
	
	private?static?Map?map=new?HashMap（）;//放不同的用戶
	private?Choice?choice;
	private?Jframe?frame;
	private?Container?contentPane;
	private?JLabel??jl1jl2;?
	private?JRadioButton?serverRbclientRb;
	private?JLabel?informLbl;
	
	private?JTextArea?centerText;
	
	private?JTextField?sendText;//發送信息
	private?JButton?connectBtnsendBtnexitBtn;
	private?DatagramSocket?socket;
	private?DatagramPacket?inPacket1inPacket2;
	private?DatagramPacket?outPacket;
	private?SocketAddress?address;
	
	
	private?JScrollPane?jp;
	public?Chat（）{
		frame=new?Jframe（“Chat“）;
		frame.setBounds（200200500400）;
		frame.setDefaultCloseOperation（Jframe.EXIT_ON_CLOSE）;
		contentPane=frame.getContentPane（）;
		initGUI（）;
	}
	public?void?initGUI（）{
		contentPane.setLayout（new?BorderLayout（））;
		choice=new?Choice（）;
		
		JPanel?p1=new?JPanel（new?FlowLayout（FlowLayout.LEFT））;
		p1.add（new?JLabel（“UDP協議:“））;
		JPanel?p2=new?JPanel（new?FlowLayout（FlowLayout.LEFT））;
		serverRb=new?JRadioButton（“服務器“）;
		clientRb=new?JRadioButton（“客戶端“）;
		ButtonGroup?bg=new?ButtonGroup（）;
		bg.add（serverRb）;
		bg.add（clientRb）;
		p2.add（serverRb）;
		p2.add（clientRb）;
		p2.add（new?JLabel（“連接狀態：“））;
		informLbl=new?JLabel（）;
		p2.add（informLbl）;
		JPanel?northP=new?JPanel（new?GridLayout（21））;
		northP.add（p1）;northP.add（p2）;
		
		JPanel?centerP=new?JPanel（new?FlowLayout（））;
		centerText=new?JTextArea（1530）;
		jp=new?JScrollPane（centerText）;
		centerP.add（jp）;
		
		JPanel?p3=new?JPanel（new?FlowLayout（））;
		jl1=new?JLabel（““）;
		
		sendText=new?JTextField（25）;sendText.addActionListener（this）;
		jl2=new?JLabel（““）;
		p3.add（jl1）;
		p3.add（jl2）;
				
		p3.add（sendText）;
		choice.add（“all“）;
		p3.add（choice）;
		
		connectBtn=new?JButton（“連接“）;connectBtn.addActionListener（this）;
		
		sendBtn=new?JButton（“發送“）;sendBtn.addActionListener（this）;
		sendBtn.setEnabled（false）;
		exitBtn=new?JButton（“退出“）;exitBtn.addActionListener（this）;
		
		JPanel?p4=new?JPanel（new?FlowLayout（FlowLayout.RIGHT））;
		p4.add（connectBtn）;
		p4.add（sendBtn）;
		p4.add（exitBtn）;
		JPanel?southP=new?JPanel（new?GridLayout（21））;
		southP.add（p3）;
		southP.add（p4）;
		contentPane.add（northPBorderLayout.NORTH）;
		contentPane.add（centerPBorderLayout.CENTER）;
		contentPane.add（southPBorderLayout.SOUTH）;
		
	}
	public?void?go（）{
		frame.setVisible（true）;
	}
	public?void?actionPerformed（ActionEvent?e）{
		if（e.getSource（）==sendText||e.getSource（）==sendBtn）{
			
			String?sendStr=sendText.getText（）.trim（）;
			if（sendStr.length（）==0）{
				
			}
			if（clientRb.isSelected（））{
				try{
					//客戶發送
					if（choice.getSelectedItem（）.equals（“all“））{
						byte[]?sendArray=（new?StringBuffer（）.append（Land.aa+“:??“+sendStr））.toString（）.getBytes（）;
						outPacket=new?DatagramPacket（sendArraysendArray.lengthnew

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????????220??2008-04-22?13:35??聊天室\.classpath

?????文件????????368??2008-04-23?10:08??聊天室\.project

?????文件?????????88??2008-08-02?14:49??聊天室\.settings\org.eclipse.core.resources.prefs

?????文件???????3956??2009-03-20?18:49??聊天室\com\Chat$Receiver.class

?????文件???????8250??2009-03-20?18:49??聊天室\com\Chat.class

?????文件???????7987??2008-04-25?08:26??聊天室\com\Chat.java

?????文件???????2515??2009-03-20?18:49??聊天室\com\Land$Subframe.class

?????文件???????3713??2009-03-20?18:49??聊天室\com\Land.class

?????文件???????4426??2008-04-23?21:01??聊天室\com\Land.java

?????文件???????2141??2009-03-20?18:49??聊天室\com\Regedit$R.class

?????文件???????3315??2009-03-20?18:49??聊天室\com\Regedit.class

?????文件???????2781??2008-04-23?21:01??聊天室\com\Regedit.java

?????文件???????1929??2009-03-20?18:49??聊天室\com\User.class

?????文件????????940??2008-04-21?13:58??聊天室\com\User.java

?????文件???????1566??2009-03-20?18:49??聊天室\com\UserService.class

?????文件???????1096??2008-04-23?21:15??聊天室\com\UserService.java

?????目錄??????????0??2009-03-20?18:49??聊天室\.settings

?????目錄??????????0??2009-03-20?18:49??聊天室\com

?????目錄??????????0??2009-03-20?18:49??聊天室

-----------?---------??----------?-----??----

????????????????45291????????????????????19