Server.java
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package talk;
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.EOFException;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.net.ServerSocket;
import java.net.Socket;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
/**
*
* @author Onur
*/
public class Server extends JFrame{
private JTextField enterField;
private JTextArea displayArea;
private ObjectOutputStream output;
private ObjectInputStream input;
private ServerSocket server;
private Socket connection;
private int counter;
public Server()
{
super("Server");
enterField = new JTextField();
enterField.setEditable(true);
enterField.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent event) {
sendData(event.getActionCommand());
enterField.setText("");
}
}
);
add(enterField, BorderLayout.NORTH);
displayArea = new JTextArea();
add(new JScrollPane(displayArea), BorderLayout.CENTER);
setSize(300,150);
setVisible(true);
}
public void runServer()
{
try {
server = new ServerSocket(12345, 100);
while(true)
{
try {
waitForConnection();
getStreams();
processConnection();
}
catch (EOFException eofException)
{
displayMessage("\n Server terminated message");
}
finally
{
closeConnection();
++counter;
}
}
}
catch (IOException ioException)
{
ioException.printStackTrace();
}
}
private void waitForConnection() throws IOException
{
displayMessage("Waitinf for connection");
connection = server.accept();
displayMessage("Connection " + counter + " received from " + connection.getInetAddress().getHostName());
}
private void getStreams() throws IOException
{
output = new ObjectOutputStream(connection.getOutputStream());
output.flush();
input = new ObjectInputStream(connection.getInputStream());
displayMessage(" got i/o streams");
}
private void processConnection() throws IOException
{
String message = "Connection successful";
sendData(message);
setTextFieldEditable(true);
do
{
try {
message = (String) input.readObject();
displayMessage("\n" + message);
}
catch (ClassNotFoundException classNotFoundException)
{
displayMessage("Unknow object type received");
}
}while(!message.equals("Client >>> Terminate"));
}
private void closeConnection()
{
displayMessage("Terminatind connection");
setTextFieldEditable(true);
try {
output.close();
input.close();
connection.close();
} catch (IOException ioException)
{
ioException.printStackTrace();
}
}
private void displayMessage(final String messageToDisplay)
{
SwingUtilities.invokeLater(
new Runnable() {
public void run() {
displayArea.append(messageToDisplay);
}
}
);
}
private void sendData(String message)
{
try {
output.writeObject("Server >>> " + message);
output.flush();
displayMessage("\n Server >>> " + message);
} catch (IOException ioException)
{
displayArea.append("\n error waiting object");
}
}
private void setTextFieldEditable(final boolean editable) {
SwingUtilities.invokeLater(
new Runnable() {
public void run() {
enterField.setEnabled(editable);
}
}
);
}
public static void main(String args[])
{
Server application = new Server();
application.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
application.runServer();
}
}
Client.java
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package talk;
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.EOFException;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.net.InetAddress;
import java.net.Socket;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
/**
*
* @author Onur
*/
public class Client extends JFrame {
private JTextField enterField;
private JTextArea displayArea;
private ObjectOutputStream output;
private ObjectInputStream input;
private String message = "";
private String chatServer;
private Socket client;
public Client(String host)
{
super("Client");
chatServer = host;
enterField = new JTextField();
enterField.setEditable(true);
enterField.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent event) {
sendData(event.getActionCommand());
enterField.setText("");
}
}
);
add(enterField, BorderLayout.NORTH);
displayArea = new JTextArea();
add(new JScrollPane(displayArea), BorderLayout.CENTER);
setSize(300,150);
setVisible(true);
}
public void runClient()
{
try
{
connectToServer();
getStreams();
processConnection();
}
catch (EOFException eofException)
{
displayMessage("\n Client terminated message");
}
catch (IOException ioException)
{
ioException.printStackTrace();
}
finally
{
closeConnection();
}
}
private void getStreams() throws IOException
{
output = new ObjectOutputStream(client.getOutputStream());
output.flush();
input = new ObjectInputStream(client.getInputStream());
displayMessage(" got i/o streams");
}
private void processConnection() throws IOException
{
setTextFieldEditable(true);
do
{
try {
message = (String) input.readObject();
displayMessage("\n" + message);
}
catch (ClassNotFoundException classNotFoundException)
{
displayMessage("Unknow object type received");
}
}while(!message.equals("Server >>> Terminate"));
}
private void closeConnection()
{
displayMessage("Closing connection");
setTextFieldEditable(true);
try {
output.close();
input.close();
client.close();
} catch (IOException ioException)
{
ioException.printStackTrace();
}
}
private void displayMessage(final String messageToDisplay)
{
SwingUtilities.invokeLater(
new Runnable() {
public void run() {
displayArea.append(messageToDisplay);
}
}
);
}
private void sendData(String message)
{
try {
output.writeObject("Client >>> " + message);
output.flush();
displayMessage("\n Client >>> " + message);
} catch (IOException ioException)
{
displayArea.append("\n error waiting object");
}
}
private void setTextFieldEditable(final boolean editable) {
SwingUtilities.invokeLater(
new Runnable() {
public void run() {
enterField.setEnabled(editable);
}
}
);
}
private void connectToServer() throws IOException
{
displayMessage("Attempting connection");
client = new Socket(InetAddress.getByName(chatServer),12345);
displayMessage("Connected to " + client.getInetAddress().getHostName());
}
public static void main(String args[])
{
Client application;
if(args.length == 0)
{
application = new Client("127.0.0.1");
}
else
{
application = new Client(args[0]);
}
application.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
application.runClient();
}
}
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