使用java網絡編程製作聊天室（java聊天室的設計與實現代碼）

本文目錄一覽：

• 1、java網絡編程 實現極簡單的聊天功能
• 2、java語音聊天室怎樣實現啊？
• 3、Java實現一個簡單的聊天室
• 4、用JAVA 編寫簡單網絡聊天程序
• 5、求java網絡聊天室（B/S模式)程序代碼
• 6、速求用JAVA語言寫聊天室的源代碼

java網絡編程 實現極簡單的聊天功能

在同一局域網環境是 應該是可以的！ 程序裡面只要將Beijing.java里的IP地址改為Shanghai這台機器的地址 ，Shanghai.java里的IP地址改為Beijing這台機器的地址，應該就OK

java語音聊天室怎樣實現啊？

實現java語音聊天室的方法很簡單，要麼自己從零研發，要麼直接使用別人的成品，意思是找網上的第三方，他們自己有研發產品的。建議考慮ZEGO即構科技，他們的語聊房SDK很好用的，提供低延遲和低成本的方案供選擇，在保障語音質量的前提下，碼率最低可到8kbps，可以試試。

Java實現一個簡單的聊天室

基本原理就是弄一個全局的容器，每進來一個人，將ip等相關信息放入容器，有人發送消息時，遍歷容器，向除它而外的所有人發送該消息。並不是很難，但是要考慮的細節還是不少的

用JAVA 編寫簡單網絡聊天程序

/**

* 基於UDP協議的聊天程序

*

* 2007.9.18

* */

//導入包

import java.awt.*;

import java.awt.event.*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.*;

import java.net.*;

public class Chat extends JFrame implements ActionListener

{

//廣播地址或者對方的地址

public static final String sendIP = “172.18.8.255”;

//發送端口9527

public static final int sendPort = 9527;

JPanel p = new JPanel();

List lst = new List(); //消息顯示

JTextField txtIP = new JTextField(18); //填寫IP地址

JTextField txtMSG = new JTextField(20); //填寫發送消息

JLabel lblIP = new JLabel(“IP地址:”);

JLabel lblMSG = new JLabel(“消息:”);

JButton btnSend = new JButton(“發送”);

byte [] buf;

//定義DatagramSocket的對象必須進行異常處理

//發送和接收數據報包的套接字

DatagramSocket ds = null;

//=============構造函數=====================

public Chat()

{

CreateInterFace();

//註冊消息框監聽器

txtMSG.addActionListener(this);

btnSend.addActionListener(this);

try

{

//端口:9527

ds =new DatagramSocket(sendPort);

}

catch(Exception ex)

{

ex.printStackTrace();

}

//============接受消息============

//匿名類

new Thread(new Runnable()

{

public void run()

{

byte buf[] = new byte[1024];

//表示接受數據報包

while(true)

{

try

{

DatagramPacket dp = new DatagramPacket(buf,1024,InetAddress.getByName(txtIP.getText()),sendPort);

ds.receive(dp);

lst.add(“【消息來自】◆” + dp.getAddress().getHostAddress() + “◆”+”【說】:” + new String (buf,0,dp.getLength()) /*+ dp.getPort()*/,0);

}

catch(Exception e)

{

if(ds.isClosed())

{

e.printStackTrace();

}

}

}

}

}).start();

//關閉窗體事件

this.addWindowListener(new WindowAdapter()

{

public void windowClosing(WindowEvent w)

{

System.out.println(“test”);

int n=JOptionPane.showConfirmDialog(null,”是否要退出?”,”退出”,JOptionPane.YES_NO_OPTION);

if(n==JOptionPane.YES_OPTION)

{

dispose();

System.exit(0);

ds.close();//關閉ds對象//關閉數據報套接字

}

}

});

}

//界面設計布局

public void CreateInterFace()

{

this.add(lst,BorderLayout.CENTER);

this.add(p,BorderLayout.SOUTH);

p.add(lblIP);

p.add(txtIP);

p.add(lblMSG);

p.add(txtMSG);

p.add(btnSend);

txtIP.setText(sendIP);

//背景顏色

lst.setBackground(Color.yellow);

//JAVA默認風格

this.setUndecorated(true);

this.getRootPane().setWindowDecorationStyle(JRootPane.FRAME);

this.setSize(600,500);

this.setTitle(“〓聊天室〓”);

this.setResizable(false);//不能改變窗體大小

this.setLocationRelativeTo(null);//窗體居中

this.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);

this.setVisible(true);

txtMSG.requestFocus();//消息框得到焦點

}

//===============================Main函數===============================

public static void main(String[]args)

{

new Chat();

}

//================================發送消息===============================

//消息框回車發送消息事件

public void actionPerformed(ActionEvent e)

{

//得到文本內容

buf = txtMSG.getText().getBytes();

//判斷消息框是否為空

if (txtMSG.getText().length()==0)

{

JOptionPane.showMessageDialog(null,”發送消息不能為空”,”提示”,JOptionPane.WARNING_MESSAGE);

}

else{

try

{

InetAddress address = InetAddress.getByName(sendIP);

DatagramPacket dp = new DatagramPacket(buf,buf.length,InetAddress.getByName(txtIP.getText()),sendPort);

ds.send(dp);

}

catch(Exception ex)

{

ex.printStackTrace();

}

}

txtMSG.setText(“”);//清空消息框

//點發送按鈕發送消息事件

if(e.getSource()==btnSend)

{

buf = txtMSG.getText().getBytes();

try

{

DatagramPacket dp = new DatagramPacket(buf,buf.length,InetAddress.getByName(txtIP.getText()),sendPort);

}

catch(Exception ex)

{

ex.printStackTrace();

}

txtMSG.setText(“”);//清空消息框

txtMSG.requestFocus();

}

}

}

求java網絡聊天室（B/S模式)程序代碼

共四個java文件，源代碼如下：

import java.awt.*;

import java.net.*;

import java.awt.event.*;

import java.io.*;

import java.util.Hashtable;

public class ChatArea extends Panel implements ActionListener,Runnable

{

Socket socket=null;

DataInputStream in=null;

DataOutputStream out=null;

Thread threadMessage=null;

TextArea 談話顯示區,私聊顯示區=null;

TextField 送出信息=null;

Button 確定,刷新談話區,刷新私聊區;

Label 提示條=null;

String name=null;

Hashtable listTable;

List listComponent=null;

Choice privateChatList;

int width,height;

public ChatArea(String name,Hashtable listTable,int width,int height)

{

setLayout(null);

setBackground(Color.orange);

this.width=width;

this.height=height;

setSize(width,height);

this.listTable=listTable;

this.name=name;

threadMessage=new Thread(this);

談話顯示區=new TextArea(10,10);

私聊顯示區=new TextArea(10,10);

確定=new Button(“送出信息到:”);

刷新談話區=new Button(“刷新談話區”);

刷新私聊區=new Button(“刷新私聊區”);

提示條=new Label(“雙擊聊天者可私聊”,Label.CENTER);

送出信息=new TextField(28);

確定.addActionListener(this);

送出信息.addActionListener(this);

刷新談話區.addActionListener(this);

刷新私聊區.addActionListener(this);

listComponent=new List();

listComponent.addActionListener(this);

privateChatList=new Choice();

privateChatList.add(“大家(*)”);

privateChatList.select(0);

add(談話顯示區);

談話顯示區.setBounds(10,10,(width-120)/2,(height-120));

add(私聊顯示區);

私聊顯示區.setBounds(10+(width-120)/2,10,(width-120)/2,(height-120));

add(listComponent);

listComponent.setBounds(10+(width-120),10,100,(height-160));

add(提示條);

提示條.setBounds(10+(width-120),10+(height-160),110,40);

Panel pSouth=new Panel();

pSouth.add(送出信息);

pSouth.add(確定);

pSouth.add(privateChatList);

pSouth.add(刷新談話區);

pSouth.add(刷新私聊區);

add(pSouth);

pSouth.setBounds(10,20+(height-120),width-20,60);

}

public void setName(String s)

{

name=s;

}

public void setSocketConnection(Socket socket,DataInputStream in,DataOutputStream out)

{

this.socket=socket;

this.in=in;

this.out=out;

try

{

threadMessage.start();

}

catch(Exception e)

{

}

}

public void actionPerformed(ActionEvent e)

{

if(e.getSource()==確定||e.getSource()==送出信息)

{

String message=””;

String people=privateChatList.getSelectedItem();

people=people.substring(0,people.indexOf(“(“));

message=送出信息.getText();

if(message.length()0)

{

try {

if(people.equals(“大家”))

{

out.writeUTF(“公共聊天內容:”+name+”說:”+message);

}

else

{

out.writeUTF(“私人聊天內容:”+name+”悄悄地說:”+message+”#”+people);

}

}

catch(IOException event)

{

}

}

}

else if(e.getSource()==listComponent)

{

privateChatList.insert(listComponent.getSelectedItem(),0);

privateChatList.repaint();

}

else if(e.getSource()==刷新談話區)

{

談話顯示區.setText(null);

}

else if(e.getSource()==刷新私聊區)

{

私聊顯示區.setText(null);

}

}

public void run()

{

while(true)

{

String s=null;

try

{

s=in.readUTF();

if(s.startsWith(“聊天內容:”))

{

String content=s.substring(s.indexOf(“:”)+1);

談話顯示區.append(“\n”+content);

}

if(s.startsWith(“私人聊天內容:”))

{

String content=s.substring(s.indexOf(“:”)+1);

私聊顯示區.append(“\n”+content);

}

else if(s.startsWith(“聊天者:”))

{

String people=s.substring(s.indexOf(“:”)+1,s.indexOf(“性別”));

String sex=s.substring(s.indexOf(“性別”)+2);

listTable.put(people,people+”(“+sex+”)”);

listComponent.add((String)listTable.get(people));

listComponent.repaint();

}

else if(s.startsWith(“用戶離線:”))

{

String awayPeopleName=s.substring(s.indexOf(“:”)+1);

listComponent.remove((String)listTable.get(awayPeopleName));

listComponent.repaint();

談話顯示區.append(“\n”+(String)listTable.get(awayPeopleName)+”離線”);

listTable.remove(awayPeopleName);

}

Thread.sleep(5);

}

catch(IOException e)

{

listComponent.removeAll();

listComponent.repaint();

listTable.clear();

談話顯示區.setText(“和服務器的連接已中斷\n必須刷新瀏覽器才能再次聊天”);

break;

}

catch(InterruptedException e)

{

}

}

}

}

ChatServer.java

import java.io.*;

import java.net.*;

import java.util.*;

public class ChatServer

{

public static void main(String args[])

{

ServerSocket server=null;

Socket you=null;

Hashtable peopleList;

peopleList=new Hashtable();

while(true)

{

try

{

server=new ServerSocket(6666);

}

catch(IOException e1)

{

System.out.println(“正在監聽”);

}

try {

you=server.accept();

InetAddress address=you.getInetAddress();

System.out.println(“用戶的IP:”+address);

}

catch (IOException e)

{

}

if(you!=null)

{

Server_thread peopleThread=new Server_thread(you,peopleList);

peopleThread.start();

}

else {

continue;

}

}

}

}

class Server_thread extends Thread

{

String name=null,sex=null;

Socket socket=null;

File file=null;

DataOutputStream out=null;

DataInputStream in=null;

Hashtable peopleList=null;

Server_thread(Socket t,Hashtable list)

{

peopleList=list;

socket=t;

try {

in=new DataInputStream(socket.getInputStream());

out=new DataOutputStream(socket.getOutputStream());

}

catch (IOException e)

{

}

}

public void run()

{

while(true)

{ String s=null;

try

{

s=in.readUTF();

if(s.startsWith(“姓名:”))

{

name=s.substring(s.indexOf(“:”)+1,s.indexOf(“性別”));

sex=s.substring(s.lastIndexOf(“:”)+1);

boolean boo=peopleList.containsKey(name);

if(boo==false)

{

peopleList.put(name,this);

out.writeUTF(“可以聊天:”);

Enumeration enum=peopleList.elements();

while(enum.hasMoreElements())

{

Server_thread th=(Server_thread)enum.nextElement();

th.out.writeUTF(“聊天者:”+name+”性別”+sex);

if(th!=this)

{

out.writeUTF(“聊天者:”+th.name+”性別”+th.sex);

}

}

}

else

{

out.writeUTF(“不可以聊天:”);

}

}

else if(s.startsWith(“公共聊天內容:”))

{

String message=s.substring(s.indexOf(“:”)+1);

Enumeration enum=peopleList.elements();

while(enum.hasMoreElements())

{

((Server_thread)enum.nextElement()).out.writeUTF(“聊天內容:”+message);

}

}

else if(s.startsWith(“用戶離開:”))

{

Enumeration enum=peopleList.elements();

while(enum.hasMoreElements())

{ try

{

Server_thread th=(Server_thread)enum.nextElement();

if(th!=thisth.isAlive())

{

th.out.writeUTF(“用戶離線:”+name);

}

}

catch(IOException eee)

{

}

}

peopleList.remove(name);

socket.close();

System.out.println(name+”用戶離開了”);

break;

}

else if(s.startsWith(“私人聊天內容:”))

{

String 悄悄話=s.substring(s.indexOf(“:”)+1,s.indexOf(“#”));

String toPeople=s.substring(s.indexOf(“#”)+1);

Server_thread toThread=(Server_thread)peopleList.get(toPeople);

if(toThread!=null)

{

toThread.out.writeUTF(“私人聊天內容:”+悄悄話);

}

else

{

out.writeUTF(“私人聊天內容:”+toPeople+”已經離線”);

}

}

}

catch(IOException ee)

{

Enumeration enum=peopleList.elements();

while(enum.hasMoreElements())

{ try

{

Server_thread th=(Server_thread)enum.nextElement();

if(th!=thisth.isAlive())

{

th.out.writeUTF(“用戶離線:”+name);

}

}

catch(IOException eee)

{

}

}

peopleList.remove(name);

try

{

socket.close();

}

catch(IOException eee)

{

}

System.out.println(name+”用戶離開了”);

break;

}

}

}

}

import java.awt.*;

import java.io.*;

import java.net.*;

import java.applet.*;

import java.util.Hashtable;

ClientChat.java

public class ClientChat extends Applet implements Runnable

{

Socket socket=null;

DataInputStream in=null;

DataOutputStream out=null;

InputNameTextField 用戶提交昵稱界面=null;

ChatArea 用戶聊天界面=null;

Hashtable listTable;

Label 提示條;

Panel north, center;

Thread thread;

public void init()

{

int width=getSize().width;

int height=getSize().height;

listTable=new Hashtable();

setLayout(new BorderLayout());

用戶提交昵稱界面=new InputNameTextField(listTable);

int h=用戶提交昵稱界面.getSize().height;

用戶聊天界面=new ChatArea(“”,listTable,width,height-(h+5));

用戶聊天界面.setVisible(false);

提示條=new Label(“正在連接到服務器,請稍等…”,Label.CENTER);

提示條.setForeground(Color.red);

north=new Panel(new FlowLayout(FlowLayout.LEFT));

center=new Panel();

north.add(用戶提交昵稱界面);

north.add(提示條);

center.add(用戶聊天界面);

add(north,BorderLayout.NORTH);

add(center,BorderLayout.CENTER);

validate();

}

public void start()

{

if(socket!=nullin!=nullout!=null)

{ try

{

socket.close();

in.close();

out.close();

用戶聊天界面.setVisible(false);

}

catch(Exception ee)

{

}

}

try

{

socket = new Socket(this.getCodeBase().getHost(), 6666);

in=new DataInputStream(socket.getInputStream());

out=new DataOutputStream(socket.getOutputStream());

}

catch (IOException ee)

{

提示條.setText(“連接失敗”);

}

if(socket!=null)

{

InetAddress address=socket.getInetAddress();

提示條.setText(“連接:”+address+”成功”);

用戶提交昵稱界面.setSocketConnection(socket,in,out);

north.validate();

}

if(thread==null)

{

thread=new Thread(this);

thread.start();

}

}

public void stop()

{

try

{

socket.close();

thread=null;

}

catch(IOException e)

{

this.showStatus(e.toString());

}

}

public void run()

{

while(thread!=null)

{

if(用戶提交昵稱界面.get能否聊天()==true)

{

用戶聊天界面.setVisible(true);

用戶聊天界面.setName(用戶提交昵稱界面.getName());

用戶聊天界面.setSocketConnection(socket,in,out);

提示條.setText(“祝聊天愉快!”);

center.validate();

break;

}

try

{

Thread.sleep(100);

}

catch(Exception e)

{

}

}

}

}

InputNameTextField。java

import java.awt.*;

import java.net.*;

import java.awt.event.*;

import java.io.*;

import java.util.Hashtable;

public class InputNameTextField extends Panel implements ActionListener,Runnable

{

TextField nameFile=null;

String name=null;

Checkbox male=null,female=null;

CheckboxGroup group=null;

Button 進入聊天室=null,退出聊天室=null;

Socket socket=null;

DataInputStream in=null;

DataOutputStream out=null;

Thread thread=null;

boolean 能否聊天=false;

Hashtable listTable;

public InputNameTextField(Hashtable listTable)

{

this.listTable=listTable;

nameFile=new TextField(10);

group=new CheckboxGroup();

male=new Checkbox(“男”,true,group);

female=new Checkbox(“女”,false,group);

進入聊天室=new Button(“進入”);

退出聊天室=new Button(“退出”);

進入聊天室.addActionListener(this);

退出聊天室.addActionListener(this);

thread=new Thread(this);

add(new Label(“昵稱:”));

add(nameFile);

add(male);

add(female);

add(進入聊天室);

add(退出聊天室);

退出聊天室.setEnabled(false);

}

public void set能否聊天(boolean b)

{

能否聊天=b;

}

public boolean get能否聊天()

{

return 能否聊天;

}

public String getName()

{

return name;

}

public void setName(String s)

{

name=s;

}

public void setSocketConnection(Socket socket,DataInputStream in,DataOutputStream out)

{

this.socket=socket;

this.in=in;

this.out=out;

try{

thread.start();

}

catch(Exception e)

{

nameFile.setText(“”+e);

}

}

public Socket getSocket()

{

return socket;

}

public void actionPerformed(ActionEvent e)

{

if(e.getSource()==進入聊天室)

{

退出聊天室.setEnabled(true);

if(能否聊天==true)

{

nameFile.setText(“您正在聊天:”+name);

}

else

{

this.setName(nameFile.getText());

String sex=group.getSelectedCheckbox().getLabel();

if(socket!=nullname!=null)

{

try{

out.writeUTF(“姓名:”+name+”性別:”+sex);

}

catch(IOException ee)

{

nameFile.setText(“沒有連通服務器”+ee);

}

}

}

}

if(e.getSource()==退出聊天室)

{

try

{

out.writeUTF(“用戶離開:”);

}

catch(IOException ee)

{

}

}

}

public void run()

{

String message=null;

while(true)

{

if(in!=null)

{

try

{

message=in.readUTF();

}

catch(IOException e)

{

nameFile.setText(“和服務器斷開”+e);

}

}

if(message.startsWith(“可以聊天:”))

{

能否聊天=true;

break;

}

else if(message.startsWith(“聊天者:”))

{

String people=message.substring(message.indexOf(“:”)+1);

listTable.put(people,people);

}

else if(message.startsWith(“不可以聊天:”))

{

能否聊天=false;

nameFile.setText(“該昵稱已被佔用”);

}

}

}

}

速求用JAVA語言寫聊天室的源代碼

【ClientSocketDemo.java 客戶端Java源代碼】

import java.net.*;

import java.io.*;

public class ClientSocketDemo

{

//聲明客戶端Socket對象socket

Socket socket = null;

//聲明客戶器端數據輸入輸出流

DataInputStream in;

DataOutputStream out;

//聲明字符串數組對象response，用於存儲從服務器接收到的信息

String response[];

//執行過程中，沒有參數時的構造方法，本地服務器在本地，取默認端口10745

public ClientSocketDemo()

{

try

{

//創建客戶端socket，服務器地址取本地，端口號為10745

socket = new Socket(“localhost”,10745);

//創建客戶端數據輸入輸出流，用於對服務器端發送或接收數據

in = new DataInputStream(socket.getInputStream());

out = new DataOutputStream(socket.getOutputStream());

//獲取客戶端地址及端口號

String ip = String.valueOf(socket.getLocalAddress());

String port = String.valueOf(socket.getLocalPort());

//向服務器發送數據

out.writeUTF(“Hello Server.This connection is from client.”);

out.writeUTF(ip);

out.writeUTF(port);

//從服務器接收數據

response = new String[3];

for (int i = 0; i response.length; i++)

{

response[i] = in.readUTF();

System.out.println(response[i]);

}

}

catch(UnknownHostException e){e.printStackTrace();}

catch(IOException e){e.printStackTrace();}

}

//執行過程中，有一個參數時的構造方法，參數指定服務器地址，取默認端口10745

public ClientSocketDemo(String hostname)

{

try

{

//創建客戶端socket，hostname參數指定服務器地址，端口號為10745

socket = new Socket(hostname,10745);

in = new DataInputStream(socket.getInputStream());

out = new DataOutputStream(socket.getOutputStream());

String ip = String.valueOf(socket.getLocalAddress());

String port = String.valueOf(socket.getLocalPort());

out.writeUTF(“Hello Server.This connection is from client.”);

out.writeUTF(ip);

out.writeUTF(port);

response = new String[3];

for (int i = 0; i response.length; i++)

{

response[i] = in.readUTF();

System.out.println(response[i]);

}

}

catch(UnknownHostException e){e.printStackTrace();}

catch(IOException e){e.printStackTrace();}

}

//執行過程中，有兩個個參數時的構造方法，第一個參數hostname指定服務器地址

//第一個參數serverPort指定服務器端口號

public ClientSocketDemo(String hostname,String serverPort)

{

try

{

socket = new Socket(hostname,Integer.parseInt(serverPort));

in = new DataInputStream(socket.getInputStream());

out = new DataOutputStream(socket.getOutputStream());

String ip = String.valueOf(socket.getLocalAddress());

String port = String.valueOf(socket.getLocalPort());

out.writeUTF(“Hello Server.This connection is from client.”);

out.writeUTF(ip);

out.writeUTF(port);

response = new String[3];

for (int i = 0; i response.length; i++)

{

response[i] = in.readUTF();

System.out.println(response[i]);

}

}

catch(UnknownHostException e){e.printStackTrace();}

catch(IOException e){e.printStackTrace();}

}

public static void main(String[] args)

{

String comd[] = args;

if(comd.length == 0)

{

System.out.println(“Use localhost(127.0.0.1) and default port”);

ClientSocketDemo demo = new ClientSocketDemo();

}

else if(comd.length == 1)

{

System.out.println(“Use default port”);

ClientSocketDemo demo = new ClientSocketDemo(args[0]);

}

else if(comd.length == 2)

{

System.out.println(“Hostname and port are named by user”);

ClientSocketDemo demo = new ClientSocketDemo(args[0],args[1]);

}

else System.out.println(“ERROR”);

}

}

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

【ServerSocketDemo.java 服務器端Java源代碼】

import java.net.*;

import java.io.*;

public class ServerSocketDemo

{

//聲明ServerSocket類對象

ServerSocket serverSocket;

//聲明並初始化服務器端監聽端口號常量

public static final int PORT = 10745;

//聲明服務器端數據輸入輸出流

DataInputStream in;

DataOutputStream out;

//聲明InetAddress類對象ip，用於獲取服務器地址及端口號等信息

InetAddress ip = null;

//聲明字符串數組對象request，用於存儲從客戶端發送來的信息

String request[];

public ServerSocketDemo()

{

request = new String[3]; //初始化字符串數組

try

{

//獲取本地服務器地址信息

ip = InetAddress.getLocalHost();

//以PORT為服務端口號，創建serverSocket對象以監聽該端口上的連接

serverSocket = new ServerSocket(PORT);

//創建Socket類的對象socket，用於保存連接到服務器的客戶端socket對象

Socket socket = serverSocket.accept();

System.out.println(“This is server:”+String.valueOf(ip)+PORT);

//創建服務器端數據輸入輸出流，用於對客戶端接收或發送數據

in = new DataInputStream(socket.getInputStream());

out = new DataOutputStream(socket.getOutputStream());

//接收客戶端發送來的數據信息，並顯示

request[0] = in.readUTF();

request[1] = in.readUTF();

request[2] = in.readUTF();

System.out.println(“Received messages form client is:”);

System.out.println(request[0]);

System.out.println(request[1]);

System.out.println(request[2]);

//向客戶端發送數據

out.writeUTF(“Hello client!”);

out.writeUTF(“Your ip is:”+request[1]);

out.writeUTF(“Your port is:”+request[2]);

}

catch(IOException e){e.printStackTrace();}

}

public static void main(String[] args)

{

ServerSocketDemo demo = new ServerSocketDemo();

}

}