ProcessBuilder does not display command window

Question

I am trying to run a .bat file from my java code and I'm using the ProcessBuilder.java functionality as follows:

    String[] hubCmd = new String[]{"cmd.exe", "/C", "startHub.bat"};
    ProcessBuilder pbHub = new ProcessBuilder(hubCmd);
    pbHub.directory(new File("C:\\java\\selenium\\"));
    Process hubP = pbHub.start();

This seems to work, kicks of a java process and associated cmd process, but the command window is not displayed. Am I missing something or is this correct functionality?

Thanks in advance.

why do you want it to open command window ? just to see logs ? if so you can actually stream back the output of that process — Jigar Joshi
– Jigar Joshi, Commented Jul 8, 2014 at 7:50
Admittedly an element of laziness, although I do need to sort out logging the output. But still, just a bit annoying that there is no switch to tell it to actually display the cmd window. — DaftMule
– DaftMule, Commented Jul 8, 2014 at 7:53
Even if you opened one CMD window on your Windows machine, you can start other CMD processes (inside) which won't open other windows. — Seelenvirtuose
– Seelenvirtuose, Commented Jul 8, 2014 at 7:57
Runtime.getRuntime().exec("cmd.exe /C start"); this probably should display the command window — SparkOn
– SparkOn, Commented Jul 8, 2014 at 8:07

laune · Accepted Answer · 2014-07-08 07:57:44Z

3

Java's Process is meant to execute a command, and so it does with cmd.exe.

What you see is correct. cmd.exe does not have a "feature" for displaying a window.

The "window" you normally see is a terminal emulation or some such thing which in turn (like your Java program!) can execute another program, i.e., cmd.exe

It is the same with Linux, where an xterm executes a shell (the command interpreter). No shell (in the classic style) can display a "window".

You can make your Java program the "window"!

answered Jul 8, 2014 at 7:57

laune

31.3k3 gold badges32 silver badges44 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

ProcessBuilder does not display command window

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related