Re: can't get Runtime.getRuntime().exec to work..

The following link is an excellent resource for this kind of thing:

http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html

-----Original Message-----
From: Sohaila Roberts [mailto:[email protected]]
Sent: Friday, August 23, 2002 8:08 AM
To: [email protected]
Subject: [JAVA] can't get Runtime.getRuntime().exec to work..


Hi, I have the following code

            String tmp2 = "hmm";
            String cmd1 = "html2ps -o "+tmp2+".ps "+tmp2+".html";
            System.out.println("going to do "+cmd1);
            Process p = Runtime.getRuntime().exec(cmd1);
            BufferedReader stdInput = new BufferedReader(new
                        InputStreamReader(p.getInputStream()));
            BufferedReader stdError = new BufferedReader(new
                        InputStreamReader(p.getErrorStream()));
            // read the output from the command
            String s;
            System.out.println("Here is the standard output of the
                command:\n");
            while ((s = stdInput.readLine()) != null) {
                System.out.println(s);
            }
            //wait for end of process and get exit status
            int status ;
            status = p.waitFor();
            if (status != 0) {
                System.out.println("The command returned a status of " +
                status);
            }

            // read any errors from the attempted command
            System.out.println("Here is the standard error of the command
                (if any):\n");
            while ((s = stdError.readLine()) != null) {
                System.out.println(s);
            }


        } catch (InterruptedException intexc) {
          System.out.println("Interrupted Exception on waitFor: " +
            intexc.getMessage());
        } catch (IOException e) {
          System.out.println("ExecuteCmd.main() : " +  e);
        } catch (Exception e) {
          System.out.println("ExecuteCmd.main() : " + e);
        }

and I get the following output

going to do html2ps -o hmm.ps hmm.html
Here is the standard output of the command:

The command returned a status of -1
Here is the standard error of the command (if any):


hmm.ps doesnt get created and i get no errors.. but when i do that command
on the command shell it creates hmm.ps with no problem..

any suggestions why?

thanks
sohaila

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