Exception "Cannot run program" while using ProcessBuilder class

Question

Hi Java-Folks,
I try to start a program within a Java application using the ProcessBuilder class. This is the first time I use ProcessBuilder so I do not have any deep knowledge of it. Here is a snippet of my code:
static void connectToHost(String Host) {
ProcessBuilder pb = new ProcessBuilder("connect.exe"), Host);
Map<String, String> env = pb.environment();
env.put("SHELLWIDTH", "64");
pb.directory(new File("C:\\MyProgram\\ExApp\\shell"));
try (
Process p = pb.start();
} catch (IOException ex) {
Logger.getLogger(ShellUtil.class.getName()).log(Level.SEVERE, null, ex);
}Using this method I get an IOException which says *"Cannot run program "connect.exe" (in directory "C:\MyProgram\ExApp\shell"): CreateProcess error=2, The system couldn't find the specified file"*
Does anybody have an idea why this is not working? I tried to start another application like "notepad.exe" and that works fine. So it seems related to the fact
that the program I want to start is only available in a certain directory and not via the PATH env-variable.
I would appreciate any help or hint :-)
Regards,
Lemmy

Answer 1

Okay I guess I misinterpreted the JavaDocs regarding the directory method. The exception message is a little bit confusing too, because it seems like Java tries to find the Application within the specified
working directory.
I tried to use the full path with the ProcessBuilder constructor and it looks like this variant is working. I still have some trouble with the application itself but I was able to start another program which is
not in the PATH var, using the full path to the executable.
Thanks for the help so far.
Bye
Lemmy