Com port don't work in java [closed]
public static void main(String[] args) {

        SerialPort serialPort = new SerialPort("COM1");
        try {

            serialPort.openPort();
            serialPort.setParams(9600, 8, 1, 0);
            serialPort.setParams(SerialPort.BAUDRATE_9600,
                                 SerialPort.DATABITS_8,
                                 SerialPort.STOPBITS_1,
                                 SerialPort.PARITY_NONE);

            serialPort.writeBytes("$KE");



            byte[] buffer = serialPort.readBytes(10);
            //Закрываем порт
            serialPort.closePort();
        }
        catch (SerialPortException ex) {
            System.out.println(ex);
        }
    }
}

static CommPortIdentifier portId;
static Enumeration portList;

InputStream inputStream;
SerialPort serialPort;
Thread readThread;

portList = CommPortIdentifier.getPortIdentifiers();

        while (portList.hasMoreElements()) {
            portId = (CommPortIdentifier) portList.nextElement();
            if (portId.getPortType() == CommPortIdentifier.PORT_SERIAL) {
                 if (portId.getName().equals("COM1")) {
                         // if (portId.getName().equals("/dev/ttyUSB0")) {
                              System.out.println("Connected");


                }
            }
        }