Notes

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

import javax.swing.event.*;

import java.io.*;

import java.net.*;



import javax.swing.text.DefaultCaret;



class grp extends JFrame

{

public JButton jBClick; //pClickBtn=jBClick

public JTextArea jTA; //pTxtAr=jTA

public JTextField jTF; //pJTFld=jTF

public JScrollPane jSP; //pScPne=jSP

public Container cc; //pCont=cc



public grp (String title)

{

super (title);



cc = getContentPane ();

cc.setLayout (new FlowLayout());



jTF = new JTextField (40);

jTA = new JTextArea (6, 40);

jTA.setEditable (false);

jSP = new JScrollPane (jTA);



DefaultCaret caret = (DefaultCaret)jTA.getCaret();

caret.setUpdatePolicy(DefaultCaret.OUT_BOTTOM);



jBClick = new JButton ("Send");



cc.add (jSP);

cc.add (jTF);

cc.add (jBClick);

}

}



public class msgTcp extends grp

{

PrintWriter out = null;

public ButtonHandler bHandler;



public msgTcp (String title)

{

super (title);

bHandler = new ButtonHandler();

jBClick.addActionListener (bHandler);

jTF.addActionListener (bHandler);

}



private class ButtonHandler implements ActionListener

{

public void actionPerformed (ActionEvent event)

{

String outputLine = jTF.getText ();

out.println (outputLine);



jTF.setText ("");

}

}



public void run () throws IOException

{

Socket socket = new Socket ("127.0.0.1", 4466);

BufferedReader in = new BufferedReader (new InputStreamReader (socket.getInputStream ()));

out = new PrintWriter (socket.getOutputStream (), true);



String inputLine;



while ((inputLine = in.readLine ()) != null)

{

jTA.setText (jTA.getText () + inputLine + "n");

}



out.close();

in.close();

socket.close();

}



public static void main(String[] args) throws IOException

{

msgTcp cp = new msgTcp ("Chat Client Program");



cp.pack ();

cp.setSize (500, 200);

cp.setVisible (true);

cp.run ();

}
}