Com Port Reader rs-232(java-swing)

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
import java.util.Enumeration;
import java.util.Vector;

import javax.comm.CommPortIdentifier;
import javax.comm.SerialPort;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JEditorPane;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTabbedPane;
import javax.swing.JTextArea;
import javax.swing.text.SimpleAttributeSet;
import javax.swing.text.StyleConstants;
import javax.swing.text.html.HTMLDocument;
import javax.swing.text.html.StyleSheet;
/*
* Created on Jul 18, 2005
*
* TODO To change the template for this generated file go to
* Window - Preferences - Java - Code Style - Code Templates
*/

/**
* @author marimuthup - pmarimuthu@gmail.com
*
* TODO To change the template for this generated type comment go to
* Window - Preferences - Java - Code Style - Code Templates
*/
public class ComConsole extends JFrame implements ActionListener {

Container g = null;
JMenuBar mb = null;
JMenu file, settings, help = null;
JMenuItem save, filter, exit = null;

JTabbedPane tab = null;

JTextArea debug = null;

JEditorPane myDebug = null;

JLabel status = null;
HTMLDocument doc = null;
StyleSheet styleSheet = null;

JButton clearDebug, saveMyDebug = null;
JPanel debugPanel, myDebugPanel = null;

JComboBox combo = null;
Vector filterVector = new Vector();
String filters[] = {""};
String filterText = "MMP";

FileOutputStream fout = null;
FileChannel fc = null;

public ComConsole() throws Exception {
super("Com Console");
g = this.getContentPane();
g.setLayout(new BorderLayout(5,5));
mb = new JMenuBar();
file = new JMenu("File");
save = new JMenuItem("Save");
exit = new JMenuItem("Exit");
file.add(save);
file.addSeparator();
file.add(exit);
mb.add(file);

settings = new JMenu("Settings");
filter = new JMenuItem("Filter");
filter.addActionListener(this);
settings.add(filter);
mb.add(settings);

help = new JMenu("Help");
mb.add(help);

this.setJMenuBar(mb);

tab = new JTabbedPane();

debugPanel = new JPanel(new BorderLayout(3,3));
debug = new JTextArea("");
debugPanel.add("Center", new JScrollPane(debug));
tab.addTab("Debug", debugPanel);
clearDebug = (JButton) debugPanel.add("South", new
JButton("Clear"));
System.out.println("middle");
//doc = new HTMLDocument();
myDebugPanel = new JPanel(new BorderLayout(3,3));
myDebug = new JEditorPane("text/html", "bgcolor=#ccffcc>

My Debug

---

");
doc = (HTMLDocument) myDebug.getDocument();
myDebugPanel.add("Center", new JScrollPane(myDebug));
saveMyDebug = (JButton) myDebugPanel.add("South", new
JButton("Save"));

tab.addTab("My Output", myDebugPanel);
g.add(tab, "Center");
status = new JLabel("Welcome");
g.add(status, "South");

clearDebug.addActionListener(this);
saveMyDebug.addActionListener(this);

System.out.println("GUI Constructed.");
}
public void readAndWrite() throws Exception
{
System.out.println("Read And Write ...");
Enumeration en = CommPortIdentifier.getPortIdentifiers();
while(en.hasMoreElements())
{
CommPortIdentifier com = (CommPortIdentifier)
en.nextElement();
System.out.println("com - nextElement.");
if(com.getPortType() == CommPortIdentifier.PORT_SERIAL)
{
System.out.println("SERIAL_PORT Found ...");
SerialPort sPort = (SerialPort) com.open("COM1",
115200);
System.out.println("Serial Port Opened.");
JOptionPane.showMessageDialog(this, "COM1 Opened
Successfully!");
sPort.setSerialPortParams(115200, 8, 1,
SerialPort.PARITY_NONE);
sPort.notifyOnDataAvailable(true);
//sPort.addEventListener(this);

SimpleAttributeSet attb = new SimpleAttributeSet();
StyleConstants.setForeground(attb, Color.BLUE);
BufferedReader br = new BufferedReader(new
InputStreamReader(sPort.getInputStream()));

fout = new FileOutputStream("C:/Documents and
Settings/marimuthup/Desktop/out.html");
fc = fout.getChannel();

while(true) {
String str = br.readLine().trim();
if(str.equals("")) { continue; }
if(str.indexOf(filterText) != -1) {
//myDebug.setText("
color=red>"+myDebug.getText()+str+"");
String line = "
"+str;
doc.insertString(doc.getLength(), line, attb);
//
myDebug.setCaretPosition(myDebug.getText().length());
fc.write(ByteBuffer.wrap(line.getBytes()));
}
if(!str.startsWith("Test1") &&
!str.startsWith("Test2") && !str.startsWith("Test3")) {
debug.append("
"+str);
}
// debug.setCaretPosition(debug.getText().length());
}

}
System.out.println("Done.");
}
}

public void actionPerformed(ActionEvent e) {
if(e.getSource() == filter) {
doFilter();
}
else if(e.getSource() == clearDebug) {
debug.setText("");
}
else if(e.getSource() == saveMyDebug) {
String text = myDebug.getText();
try {
} catch(Exception ex) {
ex.printStackTrace();
}
}
}

private void doFilter() {
String ftext = (String) JOptionPane.showInputDialog(this,
"Enter
Filter-By text : ", "Input", JOptionPane.QUESTION_MESSAGE,
null, filters, filters[0]);
if(!filterVector.contains(ftext)) {
filterVector.add(ftext);
filters = (String[]) filterVector.toArray();
}
filterText = (ftext == null) ? filterText : ftext;
}

public static void main(String[] args) {
ComConsole z = null;
try {
z = new ComConsole();
System.out.println("ComConsole ...");
z.setLocation(100, 50);
z.setSize(630, 630);
z.setVisible(true);
z.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
z.readAndWrite();
}
catch(Exception ex) {
JOptionPane.showMessageDialog(null, ex.getMessage(), "COM1
Opened Successfully!", JOptionPane.ERROR_MESSAGE);
if(z != null) {
z.status.setText("Ex: "+ex.getMessage());
}
try {
if(z.fc != null) z.fc.close();
if(z.fout != null) z.fout.close();
System.out.println("Saved.");
}
catch(Exception ex2) {
}

}
}
}