Run a .jar file with parameters from JavaScript

Question

Possible Duplicate:
Execute another jar in a java program

I have an executable jar file that accepts two parameters: an input file and an output file:

java -jar inputFile.txt outputFile.txt

How can I call exactly this from JavaScript?

I'm hoping you understand the complete and utter difference between Java and JavaScript. Are you building a website or web application? — Jon Egeland, Aug 06 '12 at 04:00
I've edited the question so that it makes some sense. If you don't find the edits appropriate, please roll them back. — Blender, Aug 06 '12 at 04:08
http://stackoverflow.com/questions/1320476/execute-another-jar-in-a-java-program — James, Aug 06 '12 at 04:09
@Blender: That changes the meaning of the question. The original was about how to call it from JavaScript, not Java, which is a perfectly reasonable (if uncommon) thing to do. — Mechanical snail, Aug 06 '12 at 04:40

score 6 · Accepted Answer · edited May 23 '17 at 12:18

The answer depends on the context.

If your javascript is running in a web browser sandbox, then the answer is that you can't run a JAR file. The sandbox is designed to stop you doing that kind of thing.
If your javascript is running under node.js, then this SO Q&A offers a solution to the problem of running a command: How do I run the system commands in javascript?. This can be used to run the java command with the appropriate args.
If your javascript is trusted code running in a browser with a Java plugin, then you may be able to make a call to java.lang.System.exec(...) passing an appropriate java command line in the appropriate fashion. You may also be able to create a classloader, read the JAR file's manifest, extract the entry point class, load it, and call the "main" method.

score -5 · Answer 2 · answered Aug 06 '12 at 04:15

java -jar executable.jar inputFile.txt outputFile.txt

For further details see the java command synopsis:

SYNOPSIS

2 Answers2