Port Programming Using Netbeans

Question

Hello everybody,
I am working on Serial port communication, and I have used Netbeans for GUI designing.
I am able access the port, but failed to set Event for the same.
I am getting error like............
D:\NetBeansProjects\MySerialPort\src\readserialport\MyComport.java:20: readserialport.MyComport is not abstract and does not override abstract method serialEvent(javax.comm.SerialPortEvent) in javax.comm.SerialPortEventListener
Please help me to resolve this problem...............
My code:
* MyComport.java
* Created on March 18, 2008, 5:43 PM
package readserialport;
import java.awt.*;
import java.io.*;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.comm.*;
import java.util.*;
* @author pbagde
class MyComport extends javax.swing.JFrame
implements SerialPortEventListener{
/** How long to wait for the open to finish up. **/
public static final int TIMEOUTSECONDS = 30;
/** The chosen Port Identifier **/
CommPortIdentifier thePortID;
/** The chosen Port itself **/
CommPort thePort;
/** A mapping from names to CommPortIdentifiers. **/
protected HashMap map = new HashMap();
/** The name of the choice the user made. **/
protected String selectedPortName;
/** The CommPortIdentifier the user chose. **/
//SerialEvent Mytest;
//PortChooser MyPort = new PortChooser(null);
SerialPortEventListener SEvent;
InputStream inputStream;
OutputStream outputStream;
protected CommPortIdentifier selectedPortIdentifier;
/** Creates new form MyComport */
public MyComport(){
initComponents();
InitializeComponentValues();
public void InitializeComponentValues(){
// get list of ports available on this particular computer,
// by calling static method in CommPortIdentifier.
Enumeration pList = CommPortIdentifier.getPortIdentifiers();
// Process the list, putting serial and parallel into ComboBoxes
while (pList.hasMoreElements()) {
CommPortIdentifier cpi = (CommPortIdentifier) pList.nextElement();
System.out.println("Port " + cpi.getName());
map.put(cpi.getName(), cpi);
if (cpi.getPortType() == CommPortIdentifier.PORT_SERIAL) {
comportCMB.addItem(cpi.getName());
} else if (cpi.getPortType() == CommPortIdentifier.PORT_PARALLEL) {
//parallelPortsChoice.setEnabled(true);
//parallelPortsChoice.addItem(cpi.getName());
} else {
//other.addItem(cpi.getName());
public void SerialPortEvent(SerialPortEvent SEvent){
switch(SEvent.getEventType()){
case SerialPortEvent.BI:
case SerialPortEvent.CD:
case SerialPortEvent.CTS:
case SerialPortEvent.DSR:
case SerialPortEvent.FE:
case SerialPortEvent.OE:
case SerialPortEvent.PE:
case SerialPortEvent.RI:
case SerialPortEvent.OUTPUT_BUFFER_EMPTY:
break;
case SerialPortEvent.DATA_AVAILABLE:
StringBuffer readBuffer = new StringBuffer();
System.out.println(readBuffer);
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jPanel1 = new javax.swing.JPanel();
jLabel1 = new javax.swing.JLabel();
comportCMB = new javax.swing.JComboBox();
jLabel2 = new javax.swing.JLabel();
baudCMB = new javax.swing.JComboBox();
jLabel3 = new javax.swing.JLabel();
databitsCMB = new javax.swing.JComboBox();
jLabel4 = new javax.swing.JLabel();
parityCMB = new javax.swing.JComboBox();
jLabel5 = new javax.swing.JLabel();
stopbitsCMB = new javax.swing.JComboBox();
jLabel6 = new javax.swing.JLabel();
flowconCMB = new javax.swing.JComboBox();
connectBTN = new javax.swing.JButton();
disconnectBTN = new javax.swing.JButton();
jPanel2 = new javax.swing.JPanel();
jPanel3 = new javax.swing.JPanel();
jScrollPane1 = new javax.swing.JScrollPane();
receiveTBX = new javax.swing.JTextArea();
jPanel4 = new javax.swing.JPanel();
jScrollPane2 = new javax.swing.JScrollPane();
sendTBX = new javax.swing.JTextArea();
sendBTN = new javax.swing.JButton();
menuBar = new javax.swing.JMenuBar();
fileMenu = new javax.swing.JMenu();
openMenuItem = new javax.swing.JMenuItem();
saveMenuItem = new javax.swing.JMenuItem();
saveAsMenuItem = new javax.swing.JMenuItem();
exitMenuItem = new javax.swing.JMenuItem();
editMenu = new javax.swing.JMenu();
cutMenuItem = new javax.swing.JMenuItem();
copyMenuItem = new javax.swing.JMenuItem();
pasteMenuItem = new javax.swing.JMenuItem();
deleteMenuItem = new javax.swing.JMenuItem();
helpMenu = new javax.swing.JMenu();
contentsMenuItem = new javax.swing.JMenuItem();
aboutMenuItem = new javax.swing.JMenuItem();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setTitle("Serial Port");
setMinimumSize(new java.awt.Dimension(552, 351));
jPanel1.setBorder(javax.swing.BorderFactory.createTitledBorder(null, "Serial Port Configuration", javax.swing.border.TitledBorder.DEFAULT_JUSTIFICATION, javax.swing.border.TitledBorder.DEFAULT_POSITION, new java.awt.Font("Verdana", 1, 12)));
jLabel1.setFont(new java.awt.Font("Verdana", 0, 11));
jLabel1.setText("Connect Using :");
comportCMB.setFont(new java.awt.Font("Verdana", 0, 11));
jLabel2.setFont(new java.awt.Font("Verdana", 0, 11));
jLabel2.setText("Bits Per Second :");
baudCMB.setFont(new java.awt.Font("Verdana", 0, 11));
baudCMB.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "110", "300", "1200", "2400", "4800", "9600", "19200", "38400", "57600", "115200", "230400", "460800", "921600" }));
jLabel3.setFont(new java.awt.Font("Verdana", 0, 11));
jLabel3.setText("Data Bits :");
databitsCMB.setFont(new java.awt.Font("Verdana", 0, 11));
databitsCMB.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "5", "6", "7", "8" }));
jLabel4.setFont(new java.awt.Font("Verdana", 0, 11));
jLabel4.setText("Parity :");
parityCMB.setFont(new java.awt.Font("Verdana", 0, 11));
parityCMB.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Even", "Odd", "None", "Mark", "Space" }));
jLabel5.setFont(new java.awt.Font("Verdana", 0, 11));
jLabel5.setText("Stop Bits :");
stopbitsCMB.setFont(new java.awt.Font("Verdana", 0, 11));
stopbitsCMB.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "1", "1.5", "2" }));
jLabel6.setFont(new java.awt.Font("Verdana", 0, 11));
jLabel6.setText("Flow Control :");
flowconCMB.setFont(new java.awt.Font("Verdana", 0, 11));
flowconCMB.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Xon/Xoff In", "Xon/Xoff Out", "RTS/CTS In", "RTS/CTS Out", "None" }));
connectBTN.setFont(new java.awt.Font("Verdana", 0, 11));
connectBTN.setLabel("Connect");
connectBTN.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
connectBTNActionPerformed(evt);
disconnectBTN.setFont(new java.awt.Font("Verdana", 0, 11));
disconnectBTN.setLabel("Disconnect");
disconnectBTN.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
disconnectBTNActionPerformed(evt);
javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel1)
.addComponent(jLabel2)
.addComponent(jLabel3)
.addComponent(jLabel4)
.addComponent(jLabel5)
.addComponent(jLabel6))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(disconnectBTN, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(flowconCMB, javax.swing.GroupLayout.Alignment.TRAILING, 0, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(stopbitsCMB, javax.swing.GroupLayout.Alignment.TRAILING, 0, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(parityCMB, javax.swing.GroupLayout.Alignment.TRAILING, 0, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(databitsCMB, javax.swing.GroupLayout.Alignment.TRAILING, 0, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(baudCMB, 0, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(comportCMB, 0, 86, Short.MAX_VALUE)
.addComponent(connectBTN, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap(19, Short.MAX_VALUE)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(comportCMB, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel1))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(baudCMB, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel2))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(databitsCMB, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel3))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(parityCMB, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel4))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(stopbitsCMB, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel5))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(flowconCMB, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel6))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(connectBTN)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(disconnectBTN))
jLabel1.getAccessibleContext().setAccessibleName("");
jPanel2.setBorder(javax.swing.BorderFactory.createTitledBorder(null, "Data Communication", javax.swing.border.TitledBorder.DEFAULT_JUSTIFICATION, javax.swing.border.TitledBorder.DEFAULT_POSITION, new java.awt.Font("Verdana", 1, 12)));
jPanel3.setBorder(javax.swing.BorderFactory.createTitledBorder(null, "Receive Data", javax.swing.border.TitledBorder.DEFAULT_JUSTIFICATION, javax.swing.border.TitledBorder.DEFAULT_POSITION, new java.awt.Font("Verdana", 0, 12)));
receiveTBX.setColumns(20);
receiveTBX.setRows(5);
jScrollPane1.setViewportView(receiveTBX);
javax.swing.GroupLayout jPanel3Layout = new javax.swing.GroupLayout(jPanel3);
jPanel3.setLayout(jPanel3Layout);
jPanel3Layout.setHorizontalGroup(
jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel3Layout.createSequentialGroup()
.addContainerGap()
.addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 214, Short.MAX_VALUE)
.addContainerGap())
jPanel3Layout.setVerticalGroup(
jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel3Layout.createSequentialGroup()
.addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 63, Short.MAX_VALUE)
.addContainerGap())
jPanel4.setBorder(javax.swing.BorderFactory.createTitledBorder(null, "Send Data", javax.swing.border.TitledBorder.DEFAULT_JUSTIFICATION, javax.swing.border.TitledBorder.DEFAULT_POSITION, new java.awt.Font("Verdana", 0, 12)));
sendTBX.setColumns(20);
sendTBX.setRows(5);
jScrollPane2.setViewportView(sendTBX);
sendBTN.setLabel("Send");
javax.swing.GroupLayout jPanel4Layout = new javax.swing.GroupLayout(jPanel4);
jPanel4.setLayout(jPanel4Layout);
jPanel4Layout.setHorizontalGroup(
jPanel4Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel4Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel4Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane2, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 214, Short.MAX_VALUE)
.addComponent(sendBTN, javax.swing.GroupLayout.Alignment.TRAILING))
.addContainerGap())
jPanel4Layout.setVerticalGroup(
jPanel4Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel4Layout.createSequentialGroup()
.addComponent(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, 60, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(sendBTN))
javax.swing.GroupLayout jPanel2Layout = new javax.swing.GroupLayout(jPanel2);
jPanel2.setLayout(jPanel2Layout);
jPanel2Layout.setHorizontalGroup(
jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel2Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jPanel3, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jPanel4, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addContainerGap())
jPanel2Layout.setVerticalGroup(
jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel2Layout.createSequentialGroup()
.addComponent(jPanel3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jPanel4, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
fileMenu.setText("File");
openMenuItem.setText("Open");
fileMenu.add(openMenuItem);
saveMenuItem.setText("Save");
fileMenu.add(saveMenuItem);
saveAsMenuItem.setText("Save As ...");
fileMenu.add(saveAsMenuItem);
exitMenuItem.setText("Exit");
exitMenuItem.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
exitMenuItemActionPerformed(evt);
fileMenu.add(exitMenuItem);
menuBar.add(fileMenu);
editMenu.setText("Edit");
cutMenuItem.setText("Cut");
editMenu.add(cutMenuItem);
copyMenuItem.setText("Copy");
editMenu.add(copyMenuItem);
pasteMenuItem.setText("Paste");
editMenu.add(pasteMenuItem);
deleteMenuItem.setText("Delete");
editMenu.add(deleteMenuItem);
menuBar.add(editMenu);
helpMenu.setText("Help");
contentsMenuItem.setText("Contents");
helpMenu.add(contentsMenuItem);
aboutMenuItem.setText("About");
helpMenu.add(aboutMenuItem);
menuBar.add(helpMenu);
setJMenuBar(menuBar);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addContainerGap()
.addComponent(jPanel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGap(18, 18, 18)
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap())
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addComponent(jPanel2, javax.swing.GroupLayout.Alignment.LEADING, 0, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jPanel1, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
pack();
}// </editor-fold>
private void exitMenuItemActionPerformed(java.awt.event.ActionEvent evt) {                                            
System.exit(0);
private void connectBTNActionPerformed(java.awt.event.ActionEvent evt) {                                          
// TODO add your handling code here:
// Get the CommPortIdentifier.
thePortID = getSelectedIdentifier();
System.out.println("Trying to open " + thePortID.getName() + "...");
try{
thePort = thePortID.open("DarwinSys DataComm", TIMEOUTSECONDS * 1000);
SerialPort myPort = (SerialPort) thePort;
SEvent = (SerialPortEventListener) thePort;
//SEvent.serialEvent();
myPort.setSerialPortParams(getBaud(), getDataBits(), getStopBits(), getParity());
myPort.getFlowControlMode();
myPort.notifyOnDataAvailable(true);
myPort.addEventListener(this);
inputStream = myPort.getInputStream();
} catch (TooManyListenersException ex) {
Logger.getLogger(MyComport.class.getName()).log(Level.SEVERE, null, ex);
} catch (IOException ex) {
Logger.getLogger(MyComport.class.getName()).log(Level.SEVERE, null, ex);
} catch (UnsupportedCommOperationException ex) {
Logger.getLogger(MyComport.class.getName()).log(Level.SEVERE, null, ex);
} catch (PortInUseException ex) {
Logger.getLogger(MyComport.class.getName()).log(Level.SEVERE, null, ex);
} //catch(TooManyListenersException e) {}
System.out.println("Trying to open with BAUD " + getBaud());
System.out.println("Trying to open with DataBits " + getDataBits());
System.out.println("Trying to open with Parity " + getParity());
System.out.println("Trying to open with StopBits " + getStopBits());
System.out.println("Trying to open with FlowControl " + getFlowControlMode());
/* The public "getter" to retrieve the selection by CommPortIdentifier. */
public CommPortIdentifier getSelectedIdentifier() {
selectedPortName = (String) comportCMB.getSelectedItem();
// Get the given CommPortIdentifier
selectedPortIdentifier = (CommPortIdentifier)map.get(selectedPortName);
return selectedPortIdentifier;
private void disconnectBTNActionPerformed(java.awt.event.ActionEvent evt) {                                             
// TODO add your handling code here:
thePortID = getSelectedIdentifier();
thePort.close();
System.out.println("Closed " + thePortID.getName() + "...");
public int getBaud(){
int baud;
baud = Integer.parseInt((String) baudCMB.getSelectedItem()) ;
return baud;
public int getDataBits(){
int databits;
databits = Integer.parseInt((String) databitsCMB.getSelectedItem());
return databits;
public int getParity(){
String parity;
parity = (String) parityCMB.getSelectedItem();
if(parity.equals("Even"))
return SerialPort.PARITY_EVEN;
else if(parity.equals("Odd"))
return SerialPort.PARITY_ODD;
else if(parity.equals("Mark"))
return SerialPort.PARITY_MARK;
else if (parity.equals("Space"))
return SerialPort.PARITY_SPACE;
else
return SerialPort.PARITY_NONE;
public int getStopBits(){
String stopbits;
stopbits = (String) stopbitsCMB.getSelectedItem();
if(stopbits.equals("1"))
return SerialPort.STOPBITS_1;
else if(stopbits.equals("1.5"))
return SerialPort.STOPBITS_1_5;
else
return SerialPort.STOPBITS_2;
public int getFlowControlMode(){
String flowcontrol;
flowcontrol = (String)flowconCMB.getSelectedItem();
if(flowcontrol.equals("Xon/Xoff In"))
return SerialPort.FLOWCONTROL_XONXOFF_IN;
else if(flowcontrol.equals("Xon/Xoff Out"))
return SerialPort.FLOWCONTROL_XONXOFF_OUT;
else if(flowcontrol.equals("RTS/CTS In"))
return SerialPort.FLOWCONTROL_RTSCTS_IN;
else if(flowcontrol.equals("RTS/CTS Out"))
return SerialPort.FLOWCONTROL_RTSCTS_OUT;
else
return SerialPort.FLOWCONTROL_NONE;
* @param args the command line arguments
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new MyComport().setVisible(true);
// Variables declaration - do not modify
private javax.swing.JMenuItem aboutMenuItem;
private javax.swing.JComboBox baudCMB;
public javax.swing.JComboBox comportCMB;
private javax.swing.JButton connectBTN;
private javax.swing.JMenuItem contentsMenuItem;
private javax.swing.JMenuItem copyMenuItem;
private javax.swing.JMenuItem cutMenuItem;
private javax.swing.JComboBox databitsCMB;
private javax.swing.JMenuItem deleteMenuItem;
private javax.swing.JButton disconnectBTN;
private javax.swing.JMenu editMenu;
private javax.swing.JMenuItem exitMenuItem;
private javax.swing.JMenu fileMenu;
private javax.swing.JComboBox flowconCMB;
private javax.swing.JMenu helpMenu;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
private javax.swing.JLabel jLabel5;
private javax.swing.JLabel jLabel6;
private javax.swing.JPanel jPanel1;
private javax.swing.JPanel jPanel2;
private javax.swing.JPanel jPanel3;
private javax.swing.JPanel jPanel4;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JScrollPane jScrollPane2;
private javax.swing.JMenuBar menuBar;
private javax.swing.JMenuItem openMenuItem;
private javax.swing.JComboBox parityCMB;
private javax.swing.JMenuItem pasteMenuItem;
private javax.swing.JTextArea receiveTBX;
private javax.swing.JMenuItem saveAsMenuItem;
private javax.swing.JMenuItem saveMenuItem;
private javax.swing.JButton sendBTN;
private javax.swing.JTextArea sendTBX;
private javax.swing.JComboBox stopbitsCMB;
// End of variables declaration
}

Answer 1

Thank you, for your kind reply......
I tried for plain java coding, it is worling fine.
It is receiving data on events from my harware.
But problem while I implement SerialPorteventHandler.
I am working on Netbeans 6.0.1
MyCODE : -------
class MyComport extends javax.swing.JFrame implements SerialPortEventListener{
          // My CODE
}This give error like.....
readserialport.MyComport is not abstract and does not override abstract method serialEvent(javax.comm.SerialPortEvent) in javax.comm.SerialPortEventListener
If I remove this SerialPortEventListener then it doesn't allow me to add event listener.....
myport.addeventlistner(this);I tried to solve this problem other way, but failed...
Please help me to sola this problem....