Hello all , There is a slight error in the path name in the last mail i sent . The code should have read public void beforeFirstEvent() { try { out_file = new PrintWriter (new BufferedWriter (new FileWriter("/amd/phys150/home/kmaha/lcd/text1.txt"))); } catch (IOException error) {out.println("File not opened");} } please note the path name is /amd/phys150/home/kmaha/lcd/text1.txt and not /amd/phys150/home/kmaha/lcd the error message is jas.job.AnalysisException : security.file.write:/amd/phys150/kmaha/lcd/text1.txt the above code ran on Windows 98 but does not seem to run on Sun machine . Maha