How to execute script from JAR file?

Question

I have a maven project, in which, I am trying to execute a script (written in R). I put this script file in the source code directory as well. I found this script is not exe

Answer 1

File inside jar is no longer a file, So to execute it you first need to extract it somewhere and then execute it from external extracted file path

Answer 2

I would do the following:

• Get InputStream for the file with ClassLoader.getResourceAsStream()
• Write this InputStream to tmp dir
• Execute it with Runtime.getRuntime().execute(..)

Answer 3

You will need to extract the script from the jar file:

jar -xvf my.jar com/foo/my.script.sh