Execute a .bat file?

[Michael Hildner]

Is it possible to use Runtime.getRuntime().exec... to execute a batch file on win32? Works for executables, can't seem to launch a batch file.

[Savithri Devaraj]

Originally posted by Michael Hildner:
Is it possible to use Runtime.getRuntime().exec... to execute a batch file on win32? Works for executables, can't seem to launch a batch file.

You may try this --
Runtime.getRuntime().exec("cmd /K start run.bat");
This worked for me. You may use /K or /C options. Replace run.bat with your batch filename.
A batch file is interpreted by the command interpreter.
Savithri

[Michael Hildner]

Thanks, I tried a bunch of different ways, but never with 'start'. Works fine.

[chakri san]

hi,
thank you i sloved my problem
cheers,
chakri

Originally posted by Savithri Devaraj:
You may try this --
Runtime.getRuntime().exec("cmd /K start run.bat");
This worked for me. You may use /K or /C options. Replace run.bat with your batch filename.
A batch file is interpreted by the command interpreter.
Savithri

[Stevanus Setiawan]

Hai all,
But when u programming under windows application it doesn't work.
for example:
private void button1_click(Object source, Event e)
{
Runtime.getRuntime().exec("cmd /c somedirectory/dir/files.bat");

}
are anybody know to solve this problem ?
thx,
Stev

[Dirk Schreckmann]

Welcome to JavaRanch, Stevanus!
Look more closely at the suggested solution. You left out the "start".
Note that this only works on some version of the Windows operating system, and it certainly won't work on Linux.

[Stevanus Setiawan]

thnx ,
it worked i used this syntax:
private void button2_click(Object source, Event e)
{
try {
Runtime.getRuntime().exec("E:/directoray/ant/file.bat");
} catch (IOException eOut) {
System.exit(0);
}
}

[Dantaress lim]

how do u execute a bat file without a start --> Runtime.getRuntime().exec("cmd /K start run.bat"); ?

coding with the start,it will keep opening the command prompt.so how do u solve tis.

[Steven Bell]

.bat files have to run in a command promt in windows. You can't get around that unless you skip the .bat file, do whatever the .bat file is doing in C/C++, and use JNI to get to it.

[Ilja Preuss]

Originally posted by Dirk Schreckmann:
Note that this only works on some version of the Windows operating system

On older versions, it was "command" instead of "cmd", if I remember correctly. You can find out by examining the "ComSpec" environment variable.