import?java.awt.*;
import?java.awt.event.*;
import?java.applet.*;
import?java.net.*;
import?java.io.*;
import?java.util.*;

public?class?chatapplet?extends?applet?{
??/*以下用于定義UI變量*/
??Panel?panel1?=?new?Panel（）;????????//用于放置輸入姓名和連接兩個按鈕
??BorderLayout?borderLayout1?=?new?BorderLayout（）;
??Panel?panel2?=?new?Panel（）;????????//用于放置聊天信息顯示和聊天人員列表
??Panel?panel3?=?new?Panel（）;????????//用于放置發送信息區域
??FlowLayout?flowLayout1?=?new?FlowLayout（）;
??FlowLayout?flowLayout2?=?new?FlowLayout（）;
??Label?label1?=?new?Label（）;
??TextField?name_txt?=?new?TextField（15）;
??Button?button1?=?new?Button（）;
??Button?button2?=?new?Button（）;
??TextArea?chat_txt?=?new?TextArea（1530）;
??Label?label2?=?new?Label（）;
??Button?button3?=?new?Button（）;
??TextField?msg_txt?=?new?TextField（20）;
??java.awt.List?list1?=?new?java.awt.List（13）;
??
??/*以下定義數據流和網絡變量*/
??Socket?soc=null;???????????????????//定義連接套接字
??PrintStream?ps=null;?????????????????//定義打印流?
??Listen?listen=null;?????????????????//定義一個客戶端線程
??
??public?void?init（）?????????????????//初始化圖形界面
	{
	??resize（475350）;??
?????this.setLayout（borderLayout1）;
????panel2.setLayout（flowLayout1）;
????panel3.setLayout（flowLayout2）;
????label1.setText（“姓名：“）;
?????
????button1.setLabel（“連接“）;
????button2.setLabel（“斷開連接“）;

????chat_txt.setEditable（false）;
????panel2.setBackground（Color.cyan）;
????panel1.setBackground（Color.cyan）;
????label2.setText（“聊天信息：“）;
????button3.setLabel（“發送“）;
????msg_txt.setText（“請輸入聊天信息“）;
????panel3.setBackground（Color.cyan）;
????this.add（panel1?BorderLayout.NORTH）;
????panel1.add（label1?null）;
????panel1.add（name_txt?null）;
????panel1.add（button1?null）;
????panel1.add（button2?null）;
????this.add（panel2?BorderLayout.CENTER）;
????panel2.add（chat_txt?null）;
????panel2.add（list1?null）;
????this.add（panel3??BorderLayout.SOUTH）;
????panel3.add（label2?null）;
????panel3.add（msg_txt?null）;
????panel3.add（button3?null）;
??}

??public?boolean?action（Event?evtobject?obj）????//事件觸發代碼
	{
??????if（evt.target?instanceof?Button）
		{
	?????String?label=（String）?obj;
		?if（label.equals（“連接“））????????????????//如果點擊連接后
			{
		?????if（soc==null）
			?	{
			?????try
					{
					?soc=new?Socket（InetAddress.getLocalHost（）2525）;?????//使用端口2525實例化一個本地套接字
					?System.out.println（soc）;?????????????????????????????//在控制臺打印實例化的結果
					?ps=new?PrintStream（soc.getOutputStream（））;???????????//將ps指向soc的輸出流
					?StringBuffer?info=new?StringBuffer（“INFO:?“）;????????//定義一個字符緩沖存儲發送信息
					??????????????????????????????????????????????????????//其中INFO為關鍵字讓服務器識別為連接信息
																		??//并將name和ip用“：“分開，在服務器端將用一個
																		??//StringTokenizer類來讀取數據
					?String?userinfo=name_txt.getText（）+“:“+InetAddress.getLocalHost（）.toString（）;
					?ps.println（info.append（userinfo））;
				
					?ps.flush（）;
					?listen=new?Listen（thisname_txt.getText（）soc）;????//將客戶端線程實例化??
					?listen.start（）;????????????????????????????????????//啟動線程
				?}
	

?屬性????????????大小?????日期????時間???名稱
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?????文件???????2482??2008-12-18?09:16??050420230曹穎\聊天室\app\chatapplet$Listen.class

?????文件???????4196??2008-12-18?09:16??050420230曹穎\聊天室\app\chatapplet.class

?????文件????????535??2008-12-18?09:16??050420230曹穎\聊天室\app\chatServer$1.class

?????文件????????536??2008-12-18?09:16??050420230曹穎\聊天室\app\chatServer$2.class

?????文件???????6704??2008-12-18?09:16??050420230曹穎\聊天室\app\chatServer.class

?????文件???????3379??2008-12-18?09:17??050420230曹穎\聊天室\app\chatServer_AboutBox.class

?????文件???????2191??2008-12-18?09:16??050420230曹穎\聊天室\app\Client.class

?????目錄??????????0??2008-12-18?10:05??050420230曹穎\聊天室\app

?????文件?????????56??2002-01-17?18:12??050420230曹穎\聊天室\src\chatapplet.html

?????文件???????7535??2002-01-17?18:11??050420230曹穎\聊天室\src\chatapplet.java

?????文件??????11521??2002-01-17?18:01??050420230曹穎\聊天室\src\chatServer.java

?????文件???????2943??2002-01-17?18:03??050420230曹穎\聊天室\src\chatServer_AboutBox.java

?????目錄??????????0??2008-12-18?10:05??050420230曹穎\聊天室\src

?????文件?????296448??2008-12-22?08:13??050420230曹穎\聊天室\報告.doc

?????目錄??????????0??2008-12-22?08:13??050420230曹穎\聊天室

?????目錄??????????0??2008-12-22?08:13??050420230曹穎

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

???????????????338526????????????????????16