Notes

package tcpchatapp;

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 guiswing extends JFrame

{

public JButton pClickBtn; //sendButton=pClickBtn

public JTextArea pTxtAr; //rxArea=pTxtAr

public JTextField pJTFld; //txArea=pJTFld

public JScrollPane pScPne; //pane=pScPne

public Container pCont; //container=pCont



public guiswing (String title)

{

super (title);



pCont = getContentPane ();

pCont.setLayout (new FlowLayout());



pJTFld = new JTextField (40);

pTxtAr = new JTextArea (6, 40);

pTxtAr.setEditable (false);

pScPne = new JScrollPane (pTxtAr);



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

caret.setUpdatePolicy(DefaultCaret.OUT_BOTTOM);



pClickBtn = new JButton ("Send");



pCont.add (pScPne);

pCont.add (pJTFld);

pCont.add (pClickBtn);

}

}



public class tcpjavachat extends guiswing

{

PrintWriter out = null;

public cdp bHandler;



public tcpjavachat (String title)

{

super (title);

bHandler = new cdp();

pClickBtn.addActionListener (bHandler);

pJTFld.addActionListener (bHandler);

}



private class cdp implements ActionListener

{

public void actionPerformed (ActionEvent event)

{

String outputLine = pJTFld.getText ();

out.println (outputLine);



pJTFld.setText ("");

}

}



public void run () throws IOException

{

Socket soc = new Socket ("127.0.0.1", 9999);

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

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



String inputLine;



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

{

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


}



out.close();

in.close();

soc.close();

}



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

{

tcpjavachat pt = new tcpjavachat ("Tcp Client Chatting App");



pt.pack ();

pt.setSize (600, 250);

pt.setVisible (true);

pt.run ();

}

}