Javacomm: problem with the receive data

Question

Hello to all,
I have a problem on receiving data from a serial port.
As I figured out The port is obtained by the program I post
here bellow..but I can't receive data.
Do you have any hints?
Thanks in advance.
Mandy
import javax.comm.*;
import java.io.*;
public class SerialRead extends Thread implements SerialPortEventListener
     private InputStream in;
     public SerialRead(String port)
          try
               CommPortIdentifier id_porta;
               id_porta = CommPortIdentifier.getPortIdentifier(port);
               CommPort porta = id_porta.open("Read from serial porta", 200);
               in = porta.getInputStream();
               SerialPort porta_seriale = (SerialPort)porta;
               porta_seriale.setSerialPortParams(9600, SerialPort.DATABITS_8,
                    SerialPort.STOPBITS_1, SerialPort.PARITY_NONE);
               porta_seriale.addEventListener(this);
               this.start();
          catch (NoSuchPortException ne)
               System.out.println("The port " + port + "is not  present");
          catch (PortInUseException pe)
               System.out.println("The port " + port + "is used by " + pe.
                    currentOwner);
          catch (UnsupportedCommOperationException ue)
               System.out.println(
                    "The porta does not support the properties defined");
          catch (java.util.TooManyListenersException tme)
               System.out.println(
                    "Ther can be only one owner of the port");
          catch (IOException ioe)
               System.out.println("Error ofi IO");
     public void run()
          try
               Thread.sleep(10000);
          catch (InterruptedException e)
     public void serialEvent(SerialPortEvent event)
          System.out.println("1");
         switch ( event.getEventType() )
               case SerialPortEvent.BI :
               case SerialPortEvent.OE :
               case SerialPortEvent.FE :
               case SerialPortEvent.PE :
               case SerialPortEvent.CD :
               case SerialPortEvent.CTS :
               case SerialPortEvent.DSR :
               case SerialPortEvent.RI :
               case SerialPortEvent.OUTPUT_BUFFER_EMPTY :
                    break;
               case SerialPortEvent.DATA_AVAILABLE :
                    byte[] readBuffer = new byte[20];
                    try
                         while ( in.available() > 0 )
                              int numBytes = in.read(readBuffer);
                         System.out.println(new String(readBuffer));
                    catch (IOException e)
                    break;
     public static void main(String[] args)
         System.out.println(args[0]);
         if ( args.length < 1 )
               System.out.println("Use java SerialRead <port name>");
          else
               SerialRead reading = new SerialRead(args[0]);
}

Answer 1

Hi Abdul,
Check if the data you are getting for the two fields in your data loading are correct. I think it has some illegal characters(I guess it has a trailing space). If possible try and correct it in the source system itself.
If you are doing full load for the master data, everytime the system is going to pull these values in and throw error. One other way of avoiding it will be to maintain routines to eliminate these.
The quickfix will be to correct it at the PSA level and load it again.
Regards.