apc220 + java

package com_port;

import jssc.SerialPort;
import jssc.SerialPortEvent;
import jssc.SerialPortEventListener;
import jssc.SerialPortException;

public class Com_port {

    private static SerialPort serialPort;

    public static void main(String[] args) {
        //???????? ? ??????????? ??? ?????
        serialPort = new SerialPort("COM7");
        try {
            //????????? ????
            serialPort.openPort();
            //?????????? ?????????
            serialPort.setParams(SerialPort.BAUDRATE_9600,
                                 SerialPort.DATABITS_8,
                                 SerialPort.STOPBITS_1,
                                 SerialPort.PARITY_NONE);
            //???????? ?????????? ?????????? ???????
            serialPort.setFlowControlMode(SerialPort.FLOWCONTROL_RTSCTS_IN | 
                                          SerialPort.FLOWCONTROL_RTSCTS_OUT);
            //????????????? ????? ??????? ? ?????
            serialPort.addEventListener(new PortReader(), SerialPort.MASK_RXCHAR);

        }
        catch (SerialPortException ex) {
            System.out.println(ex);
        }
    }

    private static class PortReader implements SerialPortEventListener {

        public void serialEvent(SerialPortEvent event) {
            if(event.isRXCHAR() && event.getEventValue() > 0){
                try {
                    //???????? ????? ?? ??????????, ???????????? ?????? ? ?.?.
                    byte[] data = serialPort.readBytes();                   
                    System.out.println(data[0]);
                }
                catch (SerialPortException ex) {
                    System.out.println(ex);
                }
            }
        }
    }
}