Ubiquitous email - Software Development Case Studies in Java - page 463

CommPortIdentifier portId;
// bind to the first serial port attached to a GSM enabled
// modem.
public SMSSender() throws Exception {
super();
portId # getMobilePort();
if (portId! # null )
System.out.println("GSM equipment found: "
! portId.getName());
else
throw new Exception("No mobile modem available");
}
public void finalize(){
close();
}
// Open the connection to the mobile.
public void open() throws Exception {
serialPort # (SerialPort) portId.open
("SMSSender", 2000);
serialPort.setSerialPortParams(19200,
SerialPort.DATABITS_8,
SerialPort.STOPBITS_1,
SerialPort.PARITY_NONE);
inputStream # serialPort.getInputStream();
outputStream # serialPort.getOutputStream();
serialPort.addEventListener( this );
serialPort.notifyOnDataAvailable( true );
}
// Close the connection to the mobile.
public void close(){
try {
if (serialPort ! # null ){
serialPort.removeEventListener();
inputStream.close();
outputStream.close();
serialPort.close();
}
} catch (Exception e){}
serialPort # null ;
}
// Look for a serial port attached to a GSM-enable device
CommPortIdentifier getMobilePort() throws Exception {
Enumeration portList # CommPortIdentifier.
getPortIdentifiers();
while (portList.hasMoreElements()) {
portId # (CommPortIdentifier) portList.nextElement();