import java.awt.*;

import java.awt.event.*;

import java.net.*;

import java.io.*;

public class client extends Frame implements ActionListener,ItemListener{

public Label l1,l2,l3,l4;

public Button Ok,Cancel;

public TextField login,pwd;

public Checkbox Chatroom1,Chatroom2,Chatroom3;

public CheckboxGroup cbg;

public client1 c1;

public static String l,c,p,a;

public client() {

super("Client Login Frame");

Panel p2 = new Panel();

p2.setBackground(Color.lightGray);

Panel p4 = new Panel();

p4.setBackground(Color.lightGray);

Panel p5 = new Panel();

p5.setBackground(Color.lightGray);

Panel p6 = new Panel();

p6.setBackground(Color.lightGray);

p2.setLayout(new FlowLayout(FlowLayout.CENTER));

p4.setLayout(new FlowLayout(FlowLayout.CENTER));

p5.setLayout(new FlowLayout(FlowLayout.CENTER));

p6.setLayout(new FlowLayout(FlowLayout.CENTER));

this.setLayout(new GridLayout(4,1));

this.setLayout(new GridLayout(4,1));

l2 = new Label("Username");

login = new TextField(10);

p2.add(l2);

p2.add(login);

l3 = new Label("Password");

pwd = new TextField(10);

pwd.setEchoChar('*');

p2.add(l3);

p2.add(pwd);

l4 = new Label("ChatRooms");

p4.add(l4);

cbg = new CheckboxGroup();

Chatroom1 = new Checkbox("Chatroom1",cbg,true);

Chatroom2 = new Checkbox("Chatroom2",cbg,false);

Chatroom3 = new Checkbox("Chatroom3",cbg,false);

p5.add(Chatroom1);

p5.add(Chatroom2);

p5.add(Chatroom3);

Ok = new Button("Ok");

Cancel = new Button("Cancel");

p6.add(Ok);

p6.add(Cancel);

login.addActionListener(this);

pwd.addActionListener(this);

Chatroom1.addItemListener(this);

Chatroom2.addItemListener(this);

Chatroom3.addItemListener(this);

Ok.addActionListener(this);

Cancel.addActionListener(this);

this.add(p4);

this.add(p5);

this.add(p2);

this.add(p6);

}

public void actionPerformed(ActionEvent e){

String str = e.getActionCommand();

if(str.equals("Ok")){

l = login.getText();

login.setText("");

p = pwd.getText();

pwd.setText("");

c = cbg.getSelectedCheckbox().getLabel();

if(l.equals(p))

c1 = new client1(this);

else

login.setText("Invalid Login");

}

if(str.equals("Cancel")) {

System.exit(0);

}

}

public void itemStateChanged(ItemEvent ie){

}

public static void main(String[] args) {

client dc = new client();

dc.setSize(500,200);

dc.setVisible(true);

Image Icon = Toolkit.getDefaultToolkit().getImage("hi.gif") ;

dc.setIconImage(Icon);

}

}

class client1 extends Frame {

public static int l=0;

public static client c;

public InetAddress addr;

public static Socket s;

public static BufferedReader br;

public static BufferedWriter bw;

public static TextField text;

public static Button sendBut, exitBut;

public static List list,list1;

public client1(client c) {

this.c=c;

boolean b=true;

Image Icon = Toolkit.getDefaultToolkit().getImage("hi.gif") ;

Frame h=new Frame("Client : "+c.l);

h.setSize(400,300);

h.setIconImage(Icon);

h.setLocation(300,0);

h.setLayout(new BorderLayout());

Label ld = new Label("You are in "+c.c+" Online Users");

ld.setBackground(new Color(192, 192, 192));

h.add(ld,BorderLayout.NORTH);

h.setBackground(new Color(192, 192, 192));

Panel f=new Panel();

f.setLayout(new GridLayout(1,2));

list=new List();

f.add(list);

list1=new List();

Panel f1=new Panel();

Panel f2=new Panel();

Panel f3=new Panel();

f1.setLayout(new GridLayout(2,1));

f1.add(list1);

f2.setLayout(new GridLayout(2,1));

text=new TextField(25);

// text.setSize(25);

f2.add(text);

sendBut = new Button("Send");

exitBut = new Button("Logout");

f3.add(sendBut);

f3.add(exitBut);

f2.add(f3);

f1.add(f2);

f.add(f1);

h.add(f);

h.setVisible(true);

c.setVisible(false);

try{

InetAddress addr=InetAddress.getByName(null);

Clientone ct=new Clientone(addr);

}

catch(IOException e) {

}

}

}

class Clientone extends Frame implements ActionListener, Runnable {

public InetAddress addr;

Socket s;

BufferedReader br;

BufferedWriter bw;

public Clientone(InetAddress addr) {

super("Chat Client Application");

this.addr=addr;

client1.sendBut.addActionListener(this);

client1.exitBut.addActionListener(this);

try {

s = new Socket("127.0.0.1", 8085);

br = new BufferedReader(new InputStreamReader(s.getInputStream()));

bw = new BufferedWriter(new OutputStreamWriter(s.getOutputStream()));

bw.write(client.l);

bw.newLine();

bw.write(client.c);

bw.newLine();

bw.flush();

// client1.list1.addItem(client.l);

Thread th;

th = new Thread(this);

th.start();

}catch(Exception e){}

}

public void run() {

while (true) {

try

{

String str=br.readLine();

if(str.startsWith("Users")) {

client1.list1.addItem(str.substring(5,str.length()));

}

else if(str.equals("Clear")) {

client1.list1.removeAll();

}

else if(str.startsWith("Remove")) {

client1.list1.remove(str.substring(6,str.length()));

}

else {

client1.list.addItem(str);

}

}catch (Exception h){}

}

}

public void actionPerformed(ActionEvent ae) {

if(ae.getSource().equals(client1.exitBut)) {

try {

bw.write("Dispose"+client.c+client.l);

bw.newLine();

bw.flush();

System.exit(0);

}catch(Exception r){}

}

else {

try {



String room=null; if(client.c.equals("Chatroom1")) {

room="";

}

else if(client.c.equals("Chatroom2"))

room="";

else if(client.c.equals("Chatroom3"))

room="";

bw.write(room+"<"+client1.c.l+">"+client1.text.getText());

bw.newLine();

bw.flush();

client1.text.setText("");

}catch(Exception m){}

}

}

}

Chatroom 1

Chatroom 2

Chatroom 3

Server