Source:
<code>public void initialize() throws InitializationException { Enumeration<?> portList = CommPortIdentifier.getPortIdentifiers(); while (portList.hasMoreElements()) { CommPortIdentifier id = (CommPortIdentifier) portList.nextElement(); if (id.getPortType() == CommPortIdentifier.PORT_SERIAL) { if (id.getName().equals(port)) { logger.debug("Serial port '{}' has been found.", port); portId = id; } } } if (portId != null) { try { <START> serialPort = (SerialPort) portId.open("openHAB-Smarthomatic", 2000); <END> } catch (PortInUseException e) { throw new InitializationException(e); } try { inputStream = serialPort.getInputStream(); } catch (IOException e) { throw new InitializationException(e); } try { serialPort.addEventListener(this); } catch (TooManyListenersException e) { throw new InitializationException(e); } serialPort.notifyOnDataAvailable(true); try { serialPort.setSerialPortParams(baud, SerialPort.DATABITS_8, SerialPort.STOPBITS_1, SerialPort.PARITY_NONE); } catch (UnsupportedCommOperationException e) { throw new InitializationException(e); } try { outputStream = serialPort.getOutputStream(); } catch (IOException e) { throw new InitializationException(e); } } else { StringBuilder sb = new StringBuilder(); portList = CommPortIdentifier.getPortIdentifiers(); while (portList.hasMoreElements()) { CommPortIdentifier id = (CommPortIdentifier) portList.nextElement(); if (id.getPortType() == CommPortIdentifier.PORT_SERIAL) { sb.append(id.getName() + "\n"); } } throw new InitializationException( "Serial port '" + port + "' could not be found. Available ports are:\n" + sb.toString()); } }</code><technical_language>Please define a constant DEFAULT_PORT = 2000 this</technical_language>

Target:
public void initialize() throws InitializationException { Enumeration<?> portList = CommPortIdentifier.getPortIdentifiers(); while (portList.hasMoreElements()) { CommPortIdentifier id = (CommPortIdentifier) portList.nextElement(); if (id.getPortType() == CommPortIdentifier.PORT_SERIAL) { if (id.getName().equals(port)) { logger.debug("Serial port '{}' has been found.", port); portId = id; } } } if (portId != null) { try { serialPort = (SerialPort) portId.open("openHAB-Smarthomatic", DEFAULT_PORT); } catch (PortInUseException e) { throw new InitializationException(e); } try { inputStream = serialPort.getInputStream(); } catch (IOException e) { throw new InitializationException(e); } try { serialPort.addEventListener(this); } catch (TooManyListenersException e) { throw new InitializationException(e); } serialPort.notifyOnDataAvailable(true); try { serialPort.setSerialPortParams(baud, SerialPort.DATABITS_8, SerialPort.STOPBITS_1, SerialPort.PARITY_NONE); } catch (UnsupportedCommOperationException e) { throw new InitializationException(e); } try { outputStream = serialPort.getOutputStream(); } catch (IOException e) { throw new InitializationException(e); } } else { StringBuilder sb = new StringBuilder(); portList = CommPortIdentifier.getPortIdentifiers(); while (portList.hasMoreElements()) { CommPortIdentifier id = (CommPortIdentifier) portList.nextElement(); if (id.getPortType() == CommPortIdentifier.PORT_SERIAL) { sb.append(id.getName() + "\n"); } } throw new InitializationException( "Serial port '" + port + "' could not be found. Available ports are:\n" + sb.toString()); } }