import jssc.SerialPort;
import jssc.SerialPortEvent;
import jssc.SerialPortEventListener;
import jssc.SerialPortException;
import java.math.BigInteger;

import java.io.ByteArrayOutputStream;
import com.openbravo.pos.printer.shtrihfr.fiscalprinter.*;

public class Test {
    public static final byte ENQ = 0x05;
    public static final byte STX = 0x02;
    public static final byte ACK = 0x06;
    public static final byte NAK = 0x15;
    public static final long timeoutInMillis = 100;

    static SerialPort serialPort;

    public static void main(String[] args) {
        serialPort = new SerialPort("COM10");
        try {
            serialPort.openPort();//Open port
            serialPort.setParams(SerialPort.BAUDRATE_4800, SerialPort.DATABITS_8, SerialPort.STOPBITS_1, SerialPort.PARITY_NONE, false, true);
            serialPort.addEventListener(new SerialPortReader());

            CommandOutputStream out = new CommandOutputStream("Cp1251"); // 0515 0205130100000017 06


            try {
                serialPort.writeByte(ENQ);
            }
            catch (Exception e) {
                System.out.println(e);
            }
        }
        catch (SerialPortException ex) {
            System.out.println(ex);
        }
    }

    /*
     */
    static class SerialPortReader implements SerialPortEventListener {

        public void serialEvent(SerialPortEvent event) {
            try {
                byte buffer[] = serialPort.readBytes(event.getEventValue());

                System.out.println(buffer);
            }
            catch (Exception e) {
                System.out.println(e);
            }
        }
    }
}