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Re: A "current directory" concept for Java...

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On Sun, 24 Aug 2014 08:42:02 +0000, Andreas Leitgeb wrote:

> That's not quite the "whole" truth ;-)
>
Quite probably not, so I obviously messed something.

> ProcessBuilder has a couple of methods to tell what to do with spawnee's
> streams. You can set them up to be redirected to current process's
> streams,
> cause them to be redirected to files and some more options.
>
What I was commenting about is that calling ProcessBuilder.start() 
creates a Process and must start the load and process it controls since 
there is apparently no Process.start or Process.run method. I was 
expecting to have either: 

- a way of redirecting the standard streams provided by ProcessBuilder 
  as well as the redirectErrorStream() switch that would do the job
  before ProcessBuilder.start is called

- the ability to use the Process.getXXXStream() methods before calling
  a method that would allow the Process to run. 

Instead, I don't see either of these, so what have I missed?

  
> It's only when you keep it at default, then it is set up for
> pipe-streams and what you then do with the created Process is merely
> pick up your side of these established streams.
>
So, you are saying that the Process actually runs for a short time until 
it either wants input or fills an output buffer and then blocks until the 
streams have been redirected via the getXXXStream() methods? If so, that 
seems like a somewhat mickey mouse approach.

> Could be a legacy from old Dos-days, where installed programs often
> expected to be invoked from their installation directory.  Thats when
> one had a couple of .bat files for each application, that would cd to
> the respective one's installation dir and then start the application.
>
Agreed. I haven't done much/any programming in the Windows environment 
since W95, so what is the default these days for command line/scripted 
execution or for running a program via an icon click? Does the current 
working directory have the same default in both cases and, if so, can you 
tell me what it is: this may be useful stuff to know for code portability 
reasons.


-- 
martin@   | Martin Gregorie
gregorie. | Essex, UK
org       |

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Thread

A "current directory" concept for Java... Andreas Leitgeb <avl@auth.logic.tuwien.ac.at> - 2014-08-22 16:49 +0000
  Re: A "current directory" concept for Java... Jeff Higgins <jeff@invalid.invalid> - 2014-08-22 14:50 -0400
  Re: A "current directory" concept for Java... Jeff Higgins <jeff@invalid.invalid> - 2014-08-22 15:10 -0400
  Re: A "current directory" concept for Java... Martin Gregorie <martin@address-in-sig.invalid> - 2014-08-22 19:26 +0000
    Re: A "current directory" concept for Java... Andreas Leitgeb <avl@auth.logic.tuwien.ac.at> - 2014-08-22 23:38 +0000
      Re: A "current directory" concept for Java... Martin Gregorie <martin@address-in-sig.invalid> - 2014-08-23 14:24 +0000
        Re: A "current directory" concept for Java... Andreas Leitgeb <avl@auth.logic.tuwien.ac.at> - 2014-08-23 16:31 +0000
          Re: A "current directory" concept for Java... Martin Gregorie <martin@address-in-sig.invalid> - 2014-08-23 19:34 +0000
            Re: A "current directory" concept for Java... Andreas Leitgeb <avl@auth.logic.tuwien.ac.at> - 2014-08-24 08:42 +0000
              Re: A "current directory" concept for Java... Martin Gregorie <martin@address-in-sig.invalid> - 2014-08-24 10:37 +0000
                Re: A "current directory" concept for Java... Andreas Leitgeb <avl@auth.logic.tuwien.ac.at> - 2014-08-24 13:41 +0000
                Re: A "current directory" concept for Java... Martin Gregorie <martin@address-in-sig.invalid> - 2014-08-24 18:33 +0000
                Re: A "current directory" concept for Java... Andreas Leitgeb <avl@auth.logic.tuwien.ac.at> - 2014-08-24 22:33 +0000
                Re: A "current directory" concept for Java... Martin Gregorie <martin@address-in-sig.invalid> - 2014-08-25 00:14 +0000
  Re: A "current directory" concept for Java... Jeff Higgins <jeff@invalid.invalid> - 2014-08-22 19:45 -0400
    Re: A "current directory" concept for Java... Andreas Leitgeb <avl@auth.logic.tuwien.ac.at> - 2014-08-23 15:32 +0000
      Re: A "current directory" concept for Java... Jeff Higgins <jeff@invalid.invalid> - 2014-08-23 12:49 -0400
      Re: A "current directory" concept for Java... Jeff Higgins <jeff@invalid.invalid> - 2014-08-23 17:40 -0400
  Re: A "current directory" concept for Java... Jan Burse <janburse@fastmail.fm> - 2014-08-23 10:31 +0200
    With new Path (Re: A "current directory" concept for Java...) Jan Burse <janburse@fastmail.fm> - 2014-08-23 10:48 +0200
      Re: With new Path (Re: A "current directory" concept for Java...) Andreas Leitgeb <avl@auth.logic.tuwien.ac.at> - 2014-08-23 14:38 +0000
  Re: A "current directory" concept for Java... Roedy Green <see_website@mindprod.com.invalid> - 2014-08-23 05:31 -0700

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