[Rxtx] IOExcpetion in ParallelOutputStream.write()

[Oliver Archner]

Dear Users,

i would like to send a byte to a parallel device.
The following piece of code works well but throws an IOException in
LPRPort$ParallelOutputStream.write() saying that everything is ok ?!

Oliver


import java.io.*;
import gnu.io.*;

public class Test  {

    public static void main(String[] args) {       
        RXTXCommDriver TxPort = new RXTXCommDriver();
        ParallelPort pPort = (ParallelPort) TxPort.getCommPort("LPT1", 
CommPortIdentifier.PORT_PARALLEL);
        OutputStream oStream = null;
        try {
            oStream = pPort.getOutputStream();
            oStream.write((byte)0x51);
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                if (oStream != null) oStream.close();
            } catch (IOException e) {
                e.printStackTrace();
               
            }
        }
       
    }
}

Output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
java.io.IOException: Der Vorgang wurde erfolgreich beendet.
 in writeByte
    at gnu.io.LPRPort.writeByte(Native Method)
    at gnu.io.LPRPort$ParallelOutputStream.write(LPRPort.java:281)
    at Test.main(Test.java:12)