java code to execute commands

Question

I want to execute tabula tool commands,from within the java program. The code that I am trying is:

System.setProperty("user.dir", "C:\\Program Files");
String command ="\\tabula\\tabula-0.9.0-SNAPSHOT-jar-with-dependencies.jar "+"D:\\sample.pdf"+" -o "+"D:\\sampleeeee.csv";
Process p = Runtime.getRuntime().exec(command);

it is not working,any help would be appreciated. this command need to be executed from java

That first statement isn't going to change your (or a child process') working directory. — Elliott Frisch, Jul 13 '16 at 12:07

Jorn Vernee · Answer 1 · 2016-07-13T13:03:35.320

1

You can specify the working directory when calling exec:

Path workingDir = Paths.get("C:\\Program Files\\tabula");

String[] command = {
    "tabula-0.9.0-SNAPSHOT-jar-with-dependencies.jar",
    "sample.pdf",
    "-o samk.csv"
};

Process p = Runtime.getRuntime().exec(command, null, workingDir.toFile());

edited Jul 13 '16 at 13:03

answered Jul 13 '16 at 12:32

Jorn Vernee

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while running above code getting errorCannot run program "tabula-0.9.0-SNAPSHOT-jar-with-dependencies.jar" (in directory "C:\Program Files\tabula"): CreateProcess error=2, The system cannot find the file specified at java.lang.ProcessBuilder.start(Unknown Source) – krish Jul 13 '16 at 12:49

score 0 · Accepted Answer · edited May 23 '17 at 11:51

0

Try this to set the working directory where the command will run.

https://stackoverflow.com/a/8405745/1364747

Process p = null;
ProcessBuilder pb = new ProcessBuilder("java","-jar","tabula-0.9.0-SNAPSHOT-jar-with-dependencies.jar", "D:\\sample.pdf", "-o", "D:\\sampleeeee.csv");
pb.directory("C:\\Program Files\\tabula");
p = pb.start();

edited May 23 '17 at 11:51

Community

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answered Jul 13 '16 at 12:29

Teddy

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In the above code i am getting error like, Cannot run program "tabula-0.9.0-SNAPSHOT-jar-with-dependencies.jar" can u help me out with this, thank you in advance – krish Jul 14 '16 at 04:30
Are you sure the command you had shown in the picture works from your command line prompt? Your full command could be something like this: java -jar tabula-0.9.0-SNAPSHOT-jar-with-dependencies.jar D:\\sample.pdf -o D:\\sampleeeee.csv – Teddy Jul 14 '16 at 05:23
yes it works without "java -jar" in command line.if i include java -jar in code then also it is not executing – krish Jul 14 '16 at 05:32
Java and -jar have to be two separate strings like this: new ProcessBuilder("java","-jar","tabula-0.9.0-SNAPSHOT-jar-with-dependencies.jar", "D:\\sample.pdf", "-o", "D:\\sampleeeee.csv"); – Teddy Jul 14 '16 at 11:54

java code to execute commands

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