import javax.swing.*;

import java.io.*;

import java.net.*;

import java.awt.*;

import java.awt.event.*;

public class SimpleChatClient{

JTextArea incoming;

JTextField outgoing;

BufferedReader reader;

PrintWriter writer;

Socket sock;

public void go(){

JFrame frame = new JFrame("Simple Chat Client");

JPanel mainPanel = new JPanel();

incoming=new JTextArea(15,50);

incoming.setLineWrap(true);

incoming.setWrapStyleWord(true);

incoming.setEditable(false);

JScrollPane qScroller=new JScrollPane(incoming);

qScroller.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);

qScroller.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);

outgoing = new JTextField(20);

JButton sendButton = new JButton("Send");

sendButton.addActionListener(new SendButtonListener());

mainPanel.add(qScroller);

mainPanel.add(outgoing);

mainPanel.add(sendButton);

setUpNetworking();

Thread readerThread=new Thread(new IncomingReader());

readerThread.start();

frame.getContentPane().add(BorderLayout.CENTER,mainPanel);

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

frame.setSize(1000,500);

frame.setVisible(true);

}

private void setUpNetworking(){

try {

sock=new Socket("127.0.0.1",5000);

InputStreamReader streamReader=new InputStreamReader(sock.getInputStream());

reader=new BufferedReader(streamReader);

writer=new PrintWriter(sock.getOutputStream());

System.out.println("Networking Established");

}catch(IOException ex){

ex.printStackTrace();

}

}

public class SendButtonListener implements ActionListener{

public void actionPerformed(ActionEvent e){

try{

writer.println(outgoing.getText());

writer.flush();

}

catch(Exception ex){

ex.printStackTrace();

}

outgoing.setText("");

outgoing.requestFocus();

}

}

public static void main(String[] args) {

new SimpleChatClient().go();

}

public class IncomingReader implements Runnable{

public void run(){

String message;

try{

while((message=reader.readLine())!=null){

System.out.println("read "+message);

incoming.append(message+"\n");

}

}

catch(Exception ex){ex.printStackTrace();}

}

}

}