run batch file in java program

Question

There is batch file that contains a jar file. I want to run a batch file in a java program in netbeans. I used this code:

Process p=    Runtime.getRuntime().exec("cmd /c  start  \"C:\\Users\\123\\Desktop\\New folder (6)\\Browser.bat\"");

But by running this code, a cmd windows in open and below address is shown and batch file doesn't run.

C:\Users\123\Documents\NetBeansProjects\JavaApplication19

That is different from the address of batch file.

batch file contains:

java -jar -Xms32m -Xmx512m Browser.jar

using ProcessBuilder: the jar file runs.

ProcessBuilder pb = new ProcessBuilder("java.exe", "-jar","-Xms32m", "-Xmx512m", "C:\\Users\\123\\Desktop\\New folder (6)\\Browser.jar");
  pb.directory(new File("C:\\Windows\\System32"));
  Process p = pb.start();

using ProcessBuilder for batch file: program runs successfully but jar file not execute.

ProcessBuilder pb = new ProcessBuilder("java.exe", "-jar","-Xms32m", "-Xmx512m", "C:\\Users\\Saeedeh\\Desktop\\New folder (6)\\FarsNetBrowser.jar");
pb.directory(new File("C:\\Windows\\System32"));
Process p = pb.start();

What is printed seems just the cmd prompt advertising the current directory — Raffaele
– Raffaele, Commented Jul 5, 2014 at 9:15
use a process builder and set the initial path of the process to the folder where the batch file is at. Does the batch file work from command prompt directly? — tgkprog
– tgkprog, Commented Jul 5, 2014 at 9:19
search google for process builder. change the current folder of the Process Builder to the folder where the batch file is 'C:\\Users\\123\\Desktop\\New folder (6)\' in your case. read up the process builder javadoc — tgkprog
– tgkprog, Commented Jul 5, 2014 at 9:25
@tgkprog I added a code with ProcessBuilder. it runs the jar file. — user3807073
– user3807073, Commented Jul 5, 2014 at 9:26

Raffaele · Accepted Answer · 2014-07-05 09:54:56Z

1

I think there's an extra start in your command line. It should work by just using

cmd /c "C:\Users\123\Desktop\New folder (6)\Browser.bat"

and I would let Java escape argument instead of hardcoding the string:

new ProcessBuilder("cmd", "/c", PATH_OF_THE_BAT_FILE);

edited Jul 5, 2014 at 9:54

answered Jul 5, 2014 at 9:24

Raffaele

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2 Comments

user3807073 Over a year ago

thanks. I used first line in my code but unable to access jar file browser.jar , and by second code the java program runs successfully but jar file dose not runs.

Raffaele Over a year ago

That's just because you use relative pathnames but don't set the right working directory for the child process

Bully WiiPlaza · Accepted Answer · 2014-07-05 08:46:00Z

0

Process p = Runtime.getRuntime().exec("cmd /c start \"C:/Users/123/Desktop/New folder (6)/Browser.bat\"");

answered Jul 5, 2014 at 8:46

Bully WiiPlaza

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2 Comments

Bully WiiPlaza Over a year ago

The slashes are the difference. / is not the same as \.

user3807073 Over a year ago

ok, but I think the path is correct. I tryed with your code but the result is same.

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