Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

waitFor() never returns after creation of a process with Runtime.exec

Posted on 2003-12-04
5
Medium Priority
?
343 Views
Last Modified: 2008-03-17
when I create a process with Runtime.exec, waitFor() never
returns

im trying to use cvs to check out a project. im calling the process from java. app is running on Unix - Solaris. if one file is specified for check out - it's fine
if whole project is not
code :
...............................................................................
p =
Runtime.getRuntime().exec("cvs checkout FipWAR")


try {
if (isOSWindows() == false)
p.waitFor();//hangs over here - never returns
} catch (InterruptedException e) {
p.destroy();
}
............................................................

thank you

0
Comment
Question by:gmeltsin
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
5 Comments
 
LVL 15

Expert Comment

by:Ralf Klatt
ID: 9878360
Hi,

You may try it this way:


        fname = "cvs checkout FipWAR";
        boolean isOsWindows = Env.isOsWindows();

        try
        {
           if (!isOsWindows)
           {
                Process t = Runtime.getRuntime().exec(fname)
                t.waitFor();
            }
        }
        catch(Exception e){
            System.out.println("Error: " +e);
            return "Error";
        }



Best regards, Raisor
0
 
LVL 15

Accepted Solution

by:
jimmack earned 2000 total points
ID: 9879248
Just in case it's of any use, here's an article on some of the problems that you get with the exec():

http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Whether you've completed a degree in computer sciences or you're a self-taught programmer, writing your first lines of code in the real world is always a challenge. Here are some of the most common pitfalls for new programmers.
This article will show how Aten was able to supply easy management and control for Artear's video walls and wide range display configurations of their newsroom.
An introduction to basic programming syntax in Java by creating a simple program. Viewers can follow the tutorial as they create their first class in Java. Definitions and explanations about each element are given to help prepare viewers for future …
In this seventh video of the Xpdf series, we discuss and demonstrate the PDFfonts utility, which lists all the fonts used in a PDF file. It does this via a command line interface, making it suitable for use in programs, scripts, batch files — any pl…

705 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question