[NotInControl]

Yes, what is the need to use the OutputStreamWriter class vs outputstream as in the example shown?

Do you know which IO exception is being thrown? Maybe we can track down the problem that way

simplistic approach:

try {
  ...
  throw new FileNotFoundException("This is an error message");
  ...
} catch (FileNotFoundException e) {
  System.out.println("File not found: " + e.getMessage());
  ...
} catch (EOFException e) {
  System.out.println("End of file reached: " + e.getMessage());
  ...
} catch (IOException e) { // catch all IOExceptions not handled by previous catch blocks
  System.out.println("General I/O exception: " + e.getMessage());
  e.printStackTrace();
  ...
}