C# program wont be executed from Java

Question

I have this C# program i made and while i can run it fine by clicking the exe file or by clicking on a batch file, I cant start up the program on a java program I made to run it. I have tried this line of code and couldn't get the software to run.

Runtime.getRuntime().exec("nameOfTheExeFile");

or set it to the batch file i made that starts the program.

Runtime.getRuntime().exec("nameOfTheBatchFile");

Now the interesting thing is when I try it with the batch file i get an error saying that the file cannot be found but when i double click the batch file it will start the exe file just fine.

I have even tried to use Process but I am not getting any luck with that process as well

List cmdAndArgs = Arrays.asList(new String[]{"cmd.exe", "/c", "ProgramName.exe"});

ProcessBuilder pb = new ProcessBuilder(cmdAndArgs);

Process p = pb.start();

Strange thing is i dont get any error at all. Even when i try unit testing i don't any error's at all. Is there a process I am missing or something ? I am lost on what to do.

Update:

When i check on the task manager i can see that the program is running but not the exe version. I see ProgramName.vshost.exe , is there a reason for this to be showing and not the exe file ?

Yes it can and it is, i dont get a errror saying that the file is not there or that i can't find the batch file. And the batch file is in the same directory as the exe file. — Gilbert V
– Gilbert V, Commented Jan 15, 2015 at 18:40
I have the directory set right i made sure of that as i can set the directory and the list and still find the batch file — Gilbert V
– Gilbert V, Commented Jan 15, 2015 at 18:42
Do you have access to the repertory where the file is located ? Som times, things like this can block your way — Kevin Avignon
– Kevin Avignon, Commented Jan 15, 2015 at 19:00
I thought i do, but then again i am not sure, The Junit testing when i try to use the batch file i get the windows error saying the exe file can't be located. But i can run it fine just by clicking on the batch file. I do not know why that is happening. — Gilbert V
– Gilbert V, Commented Jan 15, 2015 at 19:11

FINDarkside · Accepted Answer · 2015-01-16 19:38:35Z

1

Since your program is command line program you need to start it from cmd. I'm not sure if this is the best way to do it, but it works.

Runtime.getRuntime().exec("cmd /c start nameOfTheBatchFile");

Batch file:

start cmd.exe /k "nameOfExeFile"
exit

edited Jan 16, 2015 at 19:38

answered Jan 15, 2015 at 19:19

FINDarkside

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8 Comments

Gilbert V Over a year ago

If the path is wrong wouldn't I get a null error? I am not getting that error. other then when i try to run it from the batch file.

FINDarkside Over a year ago

Runtime.getRuntime().exec("nameOfTheExeFile"); will give you IOException but that processbuilder won't throw any exceptions even if the file is not found. You can try it yourself.

Gilbert V Over a year ago

Well that is odd when i try that I am getting a file doesn't exist error but why would java give me that, and before you ask yes the exe file is there :P , I tried that with the batch file and while i can still run the batch file the exe file doesn't want to run.

FINDarkside Over a year ago

Can you post the output of the code i posted above?

Gilbert V Over a year ago

the output is just a windows popup prompt saying windows cannot find the program. Thats when i use your example and try it with the batch file.

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