Setting Pins on Parallel Ports

Question

Ok - going crazy - am trying to run a motor via parallel port - have a basic c app that does this but need to translate it into java. The code runs fine but no data is getting to the motor. Have tried with both a PrintStream and BufferedOutputStream but neither work (if they are in fact the prob)- this is what i have for the write methods.
public void getOutStream(){
bos = null;
try {
//bos = new BufferedOutputStream(port.getOutputStream());
pos = new PrintStream(port.getOutputStream());
System.out.println("_GET_OUTPUT_STREAM_");
} catch (IOException e) {
e.printStackTrace();
public void write(){
int [] b = {0x19, 0x39, 0x13, 0x33, 0x16, 0x36, 0x1c, 0x3c};
for(int i=0; i<b.length; i++){
pos.write(b);
//bos.write(b[i]);
delay(500);
Have checked out the forums and a couple of people have mentioned setting the pins on the port to set values - how and where can i do this? and will it do the trick? Maybe someone can see something wrong with the code that i've missed?
Any help will be HUGELY appreciated - cheers

Answer 1

You must to forces the buffered output bytes to be written out to the underlying output stream.
To do this use the flush method.
public void write(){
int [] b = {0x19, 0x39, 0x13, 0x33, 0x16, 0x36, 0x1c, 0x3c};
for(int i=0; i<b.length; i++){
pos.write(b);
//bos.write(b);
// put here if you want to flush after write one byte.
bos.flush();
delay(500);
// or here if you want to flush only after write all bytes.
bos.flush();
}