Java CommAPI and HyperTerminal?

Question

Hey, I am trying to hardcore my Java application called COMMAPI into Hyperterminal. The logic is that, my code will be connected to designated ports on my computer that can control the light system in my room. I created the app and it connects, reads, and writes data to and from the port "COM3" in question. However, i need to somehow create a Hyperterminal shortcut that run's off of the JAVA Code. I have seen this done in C already, where the code runs through Hyperterminal and it controls all the functions of the light in the room that are on COM3.
my code is as follows:
Is there anyway that i Can get the Java code to run through HyperTerminal so that it can connect to the Port ?
Thanks in Advance.
* SimpleWrite.java
* Created on June 27, 2006, 11:50 AM
* To change this template, choose Tools | Template Manager
* and open the template in the editor.
import java.io.*;
import java.util.*;
import javax.comm.*;
public class SimpleWrite implements Runnable, SerialPortEventListener {
static CommPortIdentifier portId;
static String messageString = "s";
static SerialPort serialPort;
static OutputStream outputStream;
static Thread readThread;
static InputStream inputStream;
private static String TimeStamp;
public static void main(String[] args) {
try {
portId = CommPortIdentifier.getPortIdentifier("COM6");
SimpleWrite reader = new SimpleWrite();
} catch (Exception e) {
TimeStamp = new java.util.Date().toString();
System.out.println(TimeStamp + " Port type: " + portId.getName());
public SimpleWrite() {
try {
TimeStamp = new java.util.Date().toString();
serialPort = (SerialPort) portId.open("SimpleWrite", 2000);
System.out.println(TimeStamp + " Port " + portId.getName() + " opened for Input");
} catch (PortInUseException e) {
System.out.println("Exception found in opening serialPort");
try {
inputStream = serialPort.getInputStream();
} catch (IOException e) {
System.out.println("Exception found in creating inputStream");
try {
serialPort.addEventListener(this);
} catch (TooManyListenersException e) {
System.out.println("Exception found in adding event Listener");
serialPort.notifyOnDataAvailable(true);
try {
serialPort.setSerialPortParams(9600,
SerialPort.DATABITS_8,
SerialPort.STOPBITS_1,
SerialPort.PARITY_NONE);
serialPort.setDTR(true);
serialPort.setRTS(true);
System.out.println("Baud Rate is " + serialPort.getBaudRate());
System.out.println("Data bits set to " + serialPort.getDataBits());
System.out.println("Stop bits set to " + serialPort.getStopBits());
System.out.println("Parity set to " + serialPort.getParity());
} catch (UnsupportedCommOperationException e) {
System.out.println("Exception in setting Com Parameters found");
readThread = new Thread(this);
readThread.start();
try {
outputStream = serialPort.getOutputStream();
outputStream.write(messageString.getBytes());
outputStream.close();
catch (IOException e)
System.out.println("Exception found in sending outputStream");
public void run() {
try {
Thread.sleep(100);
} catch (InterruptedException e) {}
public void serialEvent(SerialPortEvent event) {
switch(event.getEventType()) {
case SerialPortEvent.OUTPUT_BUFFER_EMPTY:
break;
case SerialPortEvent.DATA_AVAILABLE:
System.out.println("Now in Case: Data_Available");
StringBuffer readBuffer = new StringBuffer();
int c;
try {
/*while ((c=inputStream.read()) != 10){
System.out.println(c);
if(c!=13) readBuffer.append((char) c);
for (int i = 0; i < 1000 ; i++)
c=inputStream.read();
System.out.println(c);
String scannedInput = readBuffer.toString();
TimeStamp = new java.util.Date().toString();
System.out.println(TimeStamp + ": scanned input received:" + scannedInput);
inputStream.close();
serialPort.close();
} catch (IOException e) {
System.out.println("Input/Outpu Exception found");
break;
//Read off of port.
}

Answer 1

You need to connect your computer through a null modem cable. Use the hyperterminal in your second computer to link to the computer that has your java program.
then on "serialEvent" use the Data_Available criteria to get the byte streams.