looking for help call a perl script with arguments from java class

Question

I have to call a Perl script from a Java class. I am able to do that using

final ProcessBuilder builder = new ProcessBuilder("perl", "/home/abc.pl");

I am wondering if I can pass parameters something like

new ProcessBuilder("perl", "/home/abc.pl  x y");

But it's throwing an error.

Could someone please suggest how this could be done?

**What** error is it throwing? – Quentin Apr 11 '13 at 10:41 — Quentin, Apr 11 '13 at 10:41
can not find the abc.pl x y. if i remove the args it works – user2254173 Apr 11 '13 at 10:48 — user2254173, Apr 11 '13 at 10:48

Quentin · Accepted Answer · 2013-04-11T10:53:22.793

2

From the documentation:

ProcessBuilder pb = new ProcessBuilder("myCommand", "myArg1", "myArg2");

Each argument to the program you are calling needs to be a separate argument to the ProcessBuilder constructor.

new ProcessBuilder("perl", "/home/abc.pl", "x", "y");

Otherwise you are calling the equivalent of perl "/home/abc.pl x y" and it will be unable to find a file called "/home/abc.pl x y" (since x and y are different arguments, not part of the file name).

edited Apr 11 '13 at 10:53

answered Apr 11 '13 at 10:42

Quentin

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great help Quentin.. Many thanks for the quick reply and your time. – user2254173 Apr 11 '13 at 10:49

score 2 · Answer 2 · answered Apr 11 '13 at 11:01

Use following code to execute your perl code from java.

final List<String> commands = new ArrayList<String>();                

commands.add("perl");
commands.add("/home/abc.pl");
commands.add("x");
commands.add("y");
ProcessBuilder pb = new ProcessBuilder(commands);

looking for help call a perl script with arguments from java class

2 Answers2