Running bat file with java processbuilder

Question

I am trying to execute .bat file using java process builder but it does not starts the process. Please tell me what i am doing wrong here. This code works fine with linux envoirnment when I replace file.bat with ./file.sh

final ArrayList<String> command = new ArrayList<String>();
command.add(WORKING_DIR+File.separator+"file.bat");
final ProcessBuilder builder = new ProcessBuilder(command);
try {
    builder.redirectErrorStream(true);
    builder.start();
    } catch (IOException e) {
      logger.error("Could not start process." ,e);
}

using java property to get the current working directory System.getProperty("user.dir") — Salman Raza
– Salman Raza, Commented Jun 15, 2013 at 6:19
try to use Runtime Class, here is an example, it will work well, docs.oracle.com/javase/6/docs/api/java/lang/Runtime.html — Mayank Tiwari
– Mayank Tiwari, Commented Jun 15, 2013 at 6:20

Toilal · Accepted Answer · 2013-06-15 06:24:14Z

9

First element in array must be an executable. So you have to invoke cmd.exe in order to call you batch file.

ProcessBuilder builder = new ProcessBuilder(Arrays.asList(new String[] {"cmd.exe", "/C", WORKING_DIR + File.separator + "file.bat"}));

answered Jun 15, 2013 at 6:24

Toilal

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2 Comments

Salman Raza Over a year ago

still the same problem. it doesn't start the new process and kills the existing one

Dan Halbert Over a year ago

You don't have to invoke cmd.exe. A .bat file can be executed. I just wrote a small test case:

import java.io.IOException;  class Test {      public static void main(String args[]) throws InterruptedException, IOException { 	ProcessBuilder processBuilder = new ProcessBuilder(args[0]); 	processBuilder.inheritIO(); 	Process process = processBuilder.start(); 	process.waitFor();     } }

. I have a foo.bat: echo "Hello, world". Then I do java Test foo.bat

Juned Ahsan · Accepted Answer · 2013-06-15 06:19:53Z

1

Make sure the path to the bat file is correct. You can either debug it using a debugger or put a sysout to determine that:

final ArrayList<String> command = new ArrayList<String>();
System.out.println("Batch file path : " + WORKING_DIR+File.separator+"file.bat")
command.add(WORKING_DIR+File.separator+"file.bat");
final ProcessBuilder builder = new ProcessBuilder(command);
try {
    builder.redirectErrorStream(true);
    builder.start();
    } catch (IOException e) {
      logger.error("Could not start process." ,e);
}

answered Jun 15, 2013 at 6:19

Juned Ahsan

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