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I am working on a relatively large data analytics project in which an R script I wrote is the primary executable, calling all other bits of code. I can't figure out how to call an executable .jar from my R script, however and I haven't seen this question posted elsewhere... is this a possibility?
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To run an application in a nonexecutable JAR file, we have to use -cp option instead of -jar. We'll use the -cp option (short for classpath) to specify the JAR file that contains the class file we want to execute: java -cp jar-file-name main-class-name [args …]
Java Runtime Environment (To Run The file) If you want to run the JAR file, you will need the Java Runtime Environment. If you have the Java Runtime Environment, then all you need to do is to double click on the file name. But it will only work if that particular file is executable.
Right-click your JAR file and choose Open With > Java(TM) Platform SE Binary. Tip: If you don't see that option in the “Open With” menu, then click “Choose Another App” and you'll see the option. Your JAR file will launch and you'll be able to interact with it.
You can use rJava to create an instance of your java Object. Then you call its methods ..
library(rJava)
.jinit(PATH_TO_YOUR_JAR) # this starts the JVM
jobject <- .jnew("yourJavaClass") ## call the constructor
.jcall(jobject ,"I",method="YOUR_METHOD") ## call a method
Have you tried
system("path/to/file.jar")
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